MML Series Investment Fund II NPORTP MML Equity Rotation Fund (Sep 2024 report)

MML Blend Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Number of Shares		Value
EXCHANGE-TRADED FUNDS — 100.0%
iShares 5-10 Year Investment Grade Corporate Bond ETF		505,298	$	27,144,609
iShares Core S&P 500 ETF		338,689		195,362,589
iShares Core S&P Mid-Cap ETF		233,975		14,581,322
iShares Core S&P Small-Cap ETF		55,705		6,515,257
iShares Core S&P Total U.S. Stock Market ETF		1,713,019		215,189,447
iShares Core Total USD Bond Market ETF (a)		2,371,293		111,735,326
iShares Core U.S. Aggregate Bond ETF		1,102,731		111,673,568
iShares iBoxx High Yield Corporate Bond ETF (a)		337,558		27,105,907
TOTAL EXCHANGE-TRADED FUNDS (Cost $583,431,613)				709,308,025

TOTAL LONG-TERM INVESTMENTS (Cost $583,431,613)				709,308,025

SHORT-TERM INVESTMENTS — 2.7%
Investment of Cash Collateral from Securities Loaned — 2.5%
State Street Navigator Securities Lending Government Money Market Portfolio (b)		18,180,650		18,180,650

	Principal Amount
Repurchase Agreement — 0.2%
Fixed Income Clearing Corp., Repurchase Agreement, dated 9/30/24, 1.520%, due 10/01/24 (c)	$	1,254,214		1,254,214

TOTAL SHORT-TERM INVESTMENTS (Cost $19,434,864)				19,434,864

TOTAL INVESTMENTS — 102.7% (Cost $602,866,477) (d)				728,742,889

Other Assets/(Liabilities) — (2.7)%				(19,314,773)

NET ASSETS — 100.0%			$	709,428,116

Abbreviation Legend

ETF	Exchange-Traded Fund

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)

Denotes all or a portion of security on loan. The total value of securities on loan as of September 30, 2024, was $17,773,448 or 2.51% of net assets. The Fund received $2,055 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(b)	Represents investment of security lending cash collateral. (Note 2).

(c)	Maturity value of $1,254,267. Collateralized by U.S. Government Agency obligations with a rate of 4.875%, maturity date of 5/31/26, and an aggregate market value, including accrued interest, of $1,279,453.

(d)	See Note 3 for aggregate cost for federal tax purposes.

MML Dynamic Bond Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 99.7%

BANK LOANS — 2.1%
Beverages — 0.1%
Triton Water Holdings, Inc., Term Loan, 3 mo. USD Term SOFR + 3.250%
7.918% VRN 3/31/28	$	214,567	$	214,107
Commercial Services — 0.2%
Allied Universal Holdco LLC, 2021 USD Incremental Term Loan B, 1 mo. USD Term SOFR + 3.750%
8.695% VRN 5/12/28		225,761		223,456
Boost Newco Borrower LLC, 2024 USD Term Loan B, 3 mo. USD Term SOFR + 2.500%
7.104% VRN 1/31/31		128,000		127,946
				351,402
Diversified Financial Services — 0.2%
Castlelake Aviation Ltd., Term Loan B, 3 mo. USD Term SOFR + 2.500%
7.447% VRN 10/22/26		101,359		101,514
Citadel Securities LP, 2024 Term Loan B, 1 mo. USD Term SOFR + 2.250%
7.095% VRN 7/29/30		91,529		91,446
Deerfield Dakota Holding LLC, 2020 USD Term Loan B, 3 mo. USD Term SOFR + 3.750%
8.354% VRN 4/09/27		75,717		74,094
Focus Financial Partners LLC, 2024 Term Loan B8, 1 mo. USD Term SOFR + 3.250%
8.095% VRN 9/11/31		261,874		261,007
				528,061
Engineering & Construction — 0.1%
Brown Group Holding LLC, Term Loan B, 1 mo. USD Term SOFR + 2.750%
7.595% VRN 7/01/31		273,221		272,385
Entertainment — 0.3%
Caesars Entertainment, Inc., Term Loan B, 1 mo. USD Term SOFR + 2.750%
7.595% VRN 2/06/30		18,900		18,882
Flutter Financing BV, Term Loan B, 3 mo. USD Term SOFR + 2.000%
6.604% VRN 11/29/30		238,200		238,114
Light and Wonder International, Inc., 2024 Term Loan B2, 1 mo. USD Term SOFR + 2.250%
7.333% VRN 4/14/29		225,285		224,882
PCI Gaming Authority, Term Loan, 1 mo. USD Term SOFR + 2.000%
6.845% VRN 7/18/31		165,546		164,454
				646,332
Health Care - Products — 0.2%
Medline Borrower LP, 2024 USD Add-on Term Loan B,
0.000% 10/23/28 (a)		170,000		169,757

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Sotera Health Holdings LLC, 2024 Term Loan B, 1 mo. USD Term SOFR + 3.250%
8.095% VRN 5/30/31	$	180,000	$	179,325
				349,082
Insurance — 0.2%
Acrisure, LLC, 2024 Term Loan B6, 1 mo. USD Term SOFR + 3.250%
8.211% VRN 11/06/30		223,364		220,991
AmWINS Group, Inc., 2021 Term Loan B, 1 mo. USD Term SOFR + 2.250%
7.210% VRN 2/19/28		24,350		24,302
Asurion LLC
2021 Term Loan B9, 1 mo. USD Term SOFR + 3.250%
8.210% VRN 7/31/27		43,534		42,887
2024 Term Loan B12, 1 mo. USD Term SOFR + 4.250%
9.095% VRN 9/13/30		149,575		146,771
				434,951
Leisure Time — 0.0%
Alterra Mountain Co., 2024 Term Loan B4, 1 mo. USD Term SOFR + 3.250%
8.095% VRN 8/17/28		35,425		35,454
Lodging — 0.0%
Four Seasons Hotels Ltd., 2024 1st Lien Term Loan B, 1 mo. USD Term SOFR + 1.750%
6.605% VRN 11/30/29		52,117		52,080
Machinery - Diversified — 0.1%
Ali Group North America Corp., 2021 Term Loan B, 1 mo. USD Term SOFR + 2.000%
6.960% VRN 7/30/29		87,496		87,729
TK Elevator US Newco, Inc., USD Term Loan B, 6 mo. USD Term SOFR + 3.500%
8.588% VRN 4/30/30		192,148		192,469
				280,198
Pharmaceuticals — 0.2%
Gainwell Acquisition Corp., Term Loan B, 3 mo. USD Term SOFR + 4.000%
8.704% VRN 10/01/27		162,527		154,333
Jazz Financing Lux SARL, 2024 1st Lien Term Loan B, 1 mo. USD Term SOFR + 2.250%
7.095% VRN 5/05/28		195,913		195,651
				349,984
Pipelines — 0.1%
CQP Holdco LP, 2024 Term Loan B, 3 mo. USD Term SOFR + 2.250%
6.918% VRN 12/31/30		193,831		193,488
Software — 0.3%
Athenahealth Group, Inc., 2022 Term Loan B, 1 mo. USD Term SOFR + 3.250%
8.095% VRN 2/15/29		140,212		139,190
Cotiviti Corp., 2024 Term Loan, 1 mo. USD Term SOFR + 3.250%
8.451% VRN 5/01/31		309,943		309,555

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
UKG, Inc., 2024 Term Loan B, 3 mo. USD Term SOFR + 3.250%
8.555% VRN 2/10/31	$	92,402	$	92,402
				541,147
Transportation — 0.1%
Genesee & Wyoming Inc., 2024 Term Loan B, 3 mo. USD Term SOFR + 2.000%
6.604% VRN 4/10/31		150,000		149,625

TOTAL BANK LOANS (Cost $4,395,263)				4,398,296

CORPORATE DEBT — 37.3%
Advertising — 0.0%
Clear Channel Outdoor Holdings, Inc.
7.500% 6/01/29 (b)		95,000		81,820
Aerospace & Defense — 1.2%
Boeing Co.
2.196% 2/04/26		80,000		77,039
2.800% 3/01/27		290,000		275,147
2.950% 2/01/30		270,000		241,345
General Dynamics Corp.
4.250% 4/01/40		20,000		18,717
4.250% 4/01/50		50,000		45,164
L3Harris Technologies, Inc.
5.054% 4/27/45		80,000		78,585
Lockheed Martin Corp.
3.900% 6/15/32		50,000		48,986
4.150% 6/15/53		320,000		282,062
5.200% 2/15/64		40,000		41,403
Northrop Grumman Corp.
2.930% 1/15/25		160,000		159,006
3.250% 1/15/28		150,000		145,762
5.150% 5/01/40		280,000		284,362
RTX Corp.
2.250% 7/01/30		110,000		98,772
3.030% 3/15/52		180,000		125,788
4.125% 11/16/28		160,000		159,598
4.500% 6/01/42		80,000		74,415
6.000% 3/15/31		110,000		119,637
TransDigm, Inc.
6.375% 3/01/29 (b)		40,000		41,269
6.625% 3/01/32 (b)		50,000		52,067
7.125% 12/01/31 (b)		80,000		84,613
				2,453,737
Agriculture — 0.7%
Altria Group, Inc.
2.450% 2/04/32		140,000		119,486
5.800% 2/14/39		240,000		252,323
5.950% 2/14/49 (c)		130,000		136,414
6.875% 11/01/33		290,000		327,545
BAT Capital Corp.
3.462% 9/06/29		405,000		385,740
4.540% 8/15/47		130,000		109,806
Philip Morris International, Inc.

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
4.500% 3/20/42	$	80,000	$	73,892
4.875% 2/13/29		60,000		61,517
5.125% 2/13/31		20,000		20,788
5.250% 2/13/34		50,000		51,926
				1,539,437
Airlines — 0.3%
American Airlines, Inc.
8.500% 5/15/29 (b)		90,000		95,491
Delta Air Lines, Inc./SkyMiles IP Ltd.
4.750% 10/20/28 (b)		400,000		399,527
Mileage Plus Holdings LLC/Mileage Plus Intellectual Property Assets Ltd.
6.500% 6/20/27 (b)		88,000		89,094
United Airlines, Inc.
4.625% 4/15/29 (b)		65,000		62,794
				646,906
Apparel — 0.0%
NIKE, Inc.
2.850% 3/27/30		60,000		56,512
Auto Manufacturers — 1.3%
Ford Motor Co.
3.250% 2/12/32		1,530,000		1,302,987
6.100% 8/19/32 (c)		90,000		92,247
Ford Motor Credit Co. LLC
4.950% 5/28/27		200,000		199,510
General Motors Co.
5.600% 10/15/32		125,000		128,939
General Motors Financial Co., Inc.
2.400% 10/15/28		275,000		251,571
Hyundai Capital America
1.800% 10/15/25 (b)		55,000		53,438
Nissan Motor Co. Ltd.
3.522% 9/17/25 (b)		410,000		403,138
4.345% 9/17/27 (b)		300,000		292,498
				2,724,328
Auto Parts & Equipment — 0.1%
ZF North America Capital, Inc.
6.875% 4/23/32 (b)		170,000		170,599
Banks — 11.7%
ABN AMRO Bank NV
4.750% 7/28/25 (b)		260,000		258,844
Banco Santander SA
3.496% 3/24/25		600,000		596,326
Bank of America Corp.
5 yr. CMT + 1.200% 2.482% VRN 9/21/36		520,000		438,777
1 day USD SOFR + 1.210% 2.572% VRN 10/20/32		190,000		166,599
1 day USD SOFR + 1.330% 2.972% VRN 2/04/33		670,000		600,014
3 mo. USD Term SOFR + 1.632% 3.593% VRN 7/21/28		1,430,000		1,403,661
3 mo. USD Term SOFR + 1.332% 3.970% VRN 3/05/29		570,000		563,284
4.000% 1/22/25		700,000		697,869
3 mo. USD Term SOFR + 3.412% 4.083% VRN 3/20/51		220,000		191,121
Bank of Montreal 5 yr. USD Swap + 1.432%
3.803% VRN 12/15/32		70,000		68,028

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Bank of Nova Scotia 5 yr. CMT + 2.050%
4.588% VRN 5/04/37	$	180,000	$	171,219
BNP Paribas SA
1 day USD SOFR + 2.074% 2.219% VRN 6/09/26 (b)		200,000		196,155
4.625% 3/13/27 (b)		260,000		259,180
1 yr. CMT + 1.450% 5.125% VRN 1/13/29 (b)		350,000		357,399
1 day USD SOFR + 1.866% 5.894% VRN 12/05/34 (b)		200,000		215,920
5 yr. CMT + 4.354% 8.500% VRN (b) (d)		200,000		214,569
BPCE SA
1.000% 1/20/26 (b)		250,000		239,447
Citigroup, Inc.
1 day USD SOFR + 0.694% 2.014% VRN 1/25/26		95,000		94,040
1 day USD SOFR + 1.280% 3.070% VRN 2/24/28		845,000		821,260
1 day USD SOFR + 1.939% 3.785% VRN 3/17/33		580,000		543,321
3 mo. USD Term SOFR + 1.600% 3.980% VRN 3/20/30		760,000		744,249
4.650% 7/30/45		380,000		361,470
3 mo. USD Term SOFR + 4.167% 5.950% VRN (d)		160,000		160,204
Cooperatieve Rabobank UA
1 yr. CMT + 1.220% 3.649% VRN 4/06/28 (b)		250,000		245,434
4.375% 8/04/25		470,000		467,529
Credit Agricole SA 1 day USD SOFR + 1.676%
1.907% VRN 6/16/26 (b)		270,000		264,237
Goldman Sachs Group, Inc.
1 day USD SOFR + 1.472% 2.908% VRN 7/21/42		240,000		182,452
3.500% 11/16/26		270,000		265,950
3 mo. USD Term SOFR + 1.563% 4.223% VRN 5/01/29		500,000		497,085
4.250% 10/21/25		200,000		199,256
4.750% 10/21/45		70,000		68,028
5.150% 5/22/45		290,000		289,904
1 day USD SOFR + 0.820% 5.761% FRN 9/10/27		165,000		164,814
3 mo. USD Term SOFR + 1.432% 6.550% FRN 5/15/26		555,000		558,121
HSBC Holdings PLC
1 day USD SOFR + 1.929% 2.099% VRN 6/04/26		510,000		500,298
3 mo. USD Term SOFR + 1.642% 6.591% FRN 9/12/26		310,000		312,745
Inter-American Development Bank
7.350% 10/06/30 INR (e)		104,000,000		1,274,539
JP Morgan Chase & Co.
1 day USD SOFR + 1.015% 2.069% VRN 6/01/29		215,000		198,915
1 day USD SOFR + 2.040% 2.522% VRN 4/22/31		320,000		290,659
3 mo. USD Term SOFR + 1.250% 2.580% VRN 4/22/32		270,000		240,795
1 day USD SOFR + 0.915% 2.595% VRN 2/24/26		160,000		158,423
1 day USD SOFR + 1.260% 2.963% VRN 1/25/33		25,000		22,498
1 day USD SOFR + 2.440% 3.109% VRN 4/22/51		100,000		73,885
3 mo. USD Term SOFR + 1.592% 4.452% VRN 12/05/29		640,000		642,968
Lloyds Banking Group PLC 3 mo. USD LIBOR + 1.205%
3.574% VRN 11/07/28		200,000		194,808
Mitsubishi UFJ Financial Group, Inc.
1.412% 7/17/25		235,000		229,263
Morgan Stanley
1 day USD SOFR + 1.360% 2.484% VRN 9/16/36		520,000		435,109
1 day USD SOFR + 1.290% 2.943% VRN 1/21/33		115,000		102,723
1 day USD SOFR + 1.610% 4.210% VRN 4/20/28		205,000		204,583
National Securities Clearing Corp.
1.500% 4/23/25 (b)		250,000		245,717
PNC Financial Services Group, Inc.
1 day USD SOFR + 1.841% 5.582% VRN 6/12/29		180,000		187,358
1 day USD SOFR + 1.322% 5.812% VRN 6/12/26		60,000		60,389

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Royal Bank of Canada
1.150% 6/10/25	$	310,000	$	302,900
5.150% 2/01/34		40,000		41,596
Santander Holdings USA, Inc. 1 day USD SOFR + 1.249%
2.490% VRN 1/06/28		135,000		127,964
Toronto-Dominion Bank
1.150% 6/12/25		190,000		185,581
Truist Financial Corp. 1 day USD SOFR + 2.050%
6.047% VRN 6/08/27		120,000		123,137
UBS AG
7.500% 2/15/28		350,000		384,436
7.950% 1/09/25		290,000		292,245
UBS Group AG
1 day USD SOFR + 2.044% 2.193% VRN 6/05/26 (b)		480,000		471,163
1 day USD SOFR + 1.730% 3.091% VRN 5/14/32 (b)		390,000		351,684
4.253% 3/23/28 (b)		340,000		337,361
1 day USD SOFR + 3.920% 6.537% VRN 8/12/33 (b)		300,000		331,213
5 yr. CMT + 4.745% 9.250% VRN (b) (d)		200,000		221,120
US Bancorp
1.450% 5/12/25		210,000		206,150
1 day USD SOFR + 0.730% 2.215% VRN 1/27/28 (c)		20,000		19,096
1 day USD SOFR + 2.020% 5.775% VRN 6/12/29		140,000		146,725
1 day USD SOFR + 2.260% 5.836% VRN 6/12/34		40,000		42,709
Wells Fargo & Co.
1 day USD SOFR + 2.000% 2.188% VRN 4/30/26		200,000		196,744
3 mo. USD Term SOFR + 1.432% 2.879% VRN 10/30/30		235,000		217,964
3.000% 10/23/26		430,000		420,264
3 mo. USD Term SOFR + 1.432% 3.196% VRN 6/17/27		245,000		240,288
1 day USD SOFR + 1.500% 3.350% VRN 3/02/33		360,000		329,103
1 day USD SOFR + 2.130% 4.611% VRN 4/25/53		1,680,000		1,552,797
				24,483,681
Beverages — 0.1%
Anheuser-Busch InBev Worldwide, Inc.
3.500% 6/01/30		130,000		126,189
4.600% 4/15/48		65,000		61,785
Constellation Brands, Inc.
4.350% 5/09/27		80,000		80,219
				268,193
Chemicals — 0.6%
MEGlobal BV
4.250% 11/03/26 (b)		240,000		236,866
OCP SA
3.750% 6/23/31 (b)		260,000		233,025
5.125% 6/23/51 (b)		220,000		178,750
6.750% 5/02/34 (b)		200,000		214,644
Orbia Advance Corp. SAB de CV
2.875% 5/11/31 (b) (c)		490,000		414,521
				1,277,806
Commercial Services — 0.6%
Cintas Corp. No. 2
3.700% 4/01/27		70,000		69,528
DP World Ltd.
5.625% 9/25/48 (b)		330,000		329,921

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
RR Donnelley & Sons Co.
9.500% 8/01/29 (b)	$	120,000	$	121,021
Shift4 Payments LLC/Shift4 Payments Finance Sub, Inc.
6.750% 8/15/32 (b)		90,000		93,963
Triton Container International Ltd./TAL International Container Corp.
3.250% 3/15/32		160,000		138,307
United Rentals North America, Inc.
6.125% 3/15/34 (b)		400,000		413,379
				1,166,119
Cosmetics & Personal Care — 0.2%
Haleon US Capital LLC
3.375% 3/24/29		260,000		250,945
Kenvue, Inc.
4.900% 3/22/33		140,000		144,919
				395,864
Diversified Financial Services — 0.8%
AerCap Ireland Capital DAC/AerCap Global Aviation Trust
2.450% 10/29/26		170,000		163,251
3.000% 10/29/28		160,000		151,142
3.400% 10/29/33		420,000		371,597
Air Lease Corp.
1.875% 8/15/26		170,000		162,320
American Express Co.
4.050% 5/03/29		140,000		140,257
Avolon Holdings Funding Ltd.
3.250% 2/15/27 (b)		140,000		135,059
Charles Schwab Corp.
5.875% 8/24/26		260,000		267,519
1 day USD SOFR + 2.010% 6.136% VRN 8/24/34		50,000		54,658
Jane Street Group/JSG Finance, Inc.
7.125% 4/30/31 (b)		70,000		74,169
Mastercard, Inc.
3.850% 3/26/50		50,000		42,285
Nasdaq, Inc.
3.950% 3/07/52		45,000		36,175
Visa, Inc.
4.300% 12/14/45		160,000		149,074
				1,747,506
Electric — 0.3%
Consolidated Edison Co. of New York, Inc.
3.350% 4/01/30		70,000		67,337
3.950% 4/01/50		50,000		42,802
Duke Energy Carolinas LLC
2.850% 3/15/32		35,000		31,589
Duke Energy Corp.
3.950% 8/15/47		65,000		52,772
Duke Energy Ohio, Inc.
3.650% 2/01/29		70,000		68,536
Exelon Corp.
4.100% 3/15/52		65,000		53,675
Monongahela Power Co.
5.400% 12/15/43 (b)		145,000		144,717

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Pacific Gas & Electric Co.
2.500% 2/01/31	$	185,000	$	162,088
				623,516
Electronics — 0.1%
Honeywell International, Inc.
5.000% 3/01/35		180,000		187,364
Entertainment — 0.2%
Caesars Entertainment, Inc.
7.000% 2/15/30 (b)		30,000		31,341
Warnermedia Holdings, Inc.
3.755% 3/15/27		180,000		174,051
4.279% 3/15/32 (c)		190,000		168,783
5.050% 3/15/42		20,000		16,326
5.391% 3/15/62		30,000		22,990
6.412% 3/15/26		10,000		10,006
				423,497
Environmental Controls — 0.1%
Waste Connections, Inc.
5.000% 3/01/34		110,000		112,908
Food — 0.2%
The Kroger Co.
5.000% 9/15/34		90,000		90,751
Mars, Inc.
3.200% 4/01/30 (b)		80,000		75,709
Mondelez International, Inc.
1.500% 5/04/25		220,000		215,632
				382,092
Forest Products & Paper — 0.1%
Suzano Austria GmbH
3.750% 1/15/31		290,000		267,238
Gas — 0.2%
Brooklyn Union Gas Co.
4.487% 3/04/49 (b)		435,000		367,025
East Ohio Gas Co.
3.000% 6/15/50 (b)		45,000		30,002
				397,027
Health Care - Products — 0.3%
Abbott Laboratories
4.750% 11/30/36		10,000		10,260
Medline Borrower LP/Medline Co-Issuer, Inc.
6.250% 4/01/29 (b)		80,000		82,426
Solventum Corp.
5.400% 3/01/29 (b)		140,000		144,034
5.450% 3/13/31 (b)		140,000		144,324
5.600% 3/23/34 (b)		180,000		186,406
5.900% 4/30/54 (b)		150,000		155,383
				722,833

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Health Care - Services — 1.2%
Centene Corp.
2.500% 3/01/31	$	285,000	$	244,966
Cigna Group
4.375% 10/15/28		590,000		592,293
4.900% 12/15/48		230,000		216,608
Elevance Health, Inc.
2.375% 1/15/25		100,000		99,232
3.650% 12/01/27		140,000		138,040
HCA, Inc.
4.125% 6/15/29		220,000		216,552
Health Care Service Corp. A Mutual Legal Reserve Co.
3.200% 6/01/50 (b)		145,000		100,323
Humana, Inc.
4.625% 12/01/42		140,000		125,589
UnitedHealth Group, Inc.
1.250% 1/15/26		110,000		106,142
2.300% 5/15/31		220,000		195,064
3.875% 8/15/59		240,000		191,419
4.000% 5/15/29		100,000		99,756
4.200% 5/15/32		80,000		79,371
				2,405,355
Home Builders — 0.0%
Lennar Corp.
4.750% 11/29/27		40,000		40,516
Insurance — 0.3%
Aon North America, Inc.
5.450% 3/01/34		230,000		241,482
Berkshire Hathaway Finance Corp.
2.850% 10/15/50		150,000		105,421
3.850% 3/15/52		90,000		75,932
Principal Life Global Funding II
1.250% 6/23/25 (b)		110,000		107,449
Teachers Insurance & Annuity Association of America
4.900% 9/15/44 (b)		80,000		76,462
				606,746
Internet — 0.7%
Amazon.com, Inc.
3.150% 8/22/27		110,000		107,985
3.600% 4/13/32		300,000		289,907
3.875% 8/22/37		50,000		47,021
3.950% 4/13/52		130,000		112,997
Meta Platforms, Inc.
4.750% 8/15/34		170,000		173,518
Prosus NV
3.061% 7/13/31 (b)		370,000		326,577
3.832% 2/08/51 (b)		210,000		147,813
4.027% 8/03/50 (b)		310,000		226,648
				1,432,466
Leisure Time — 0.2%
NCL Corp. Ltd.
8.125% 1/15/29 (b)		80,000		85,536

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Royal Caribbean Cruises Ltd.
5.500% 4/01/28 (b)	$	20,000	$	20,254
6.250% 3/15/32 (b)		40,000		41,493
6.000% 2/01/33 (b)		170,000		174,281
Viking Cruises Ltd.
7.000% 2/15/29 (b)		140,000		141,769
				463,333
Lodging — 0.3%
Hilton Domestic Operating Co., Inc.
3.625% 2/15/32 (b)		120,000		108,411
6.125% 4/01/32 (b)		60,000		61,780
Las Vegas Sands Corp.
3.900% 8/08/29		40,000		38,125
6.000% 8/15/29		60,000		62,352
Sands China Ltd.
5.125% STEP 8/08/25		390,000		389,155
				659,823
Media — 2.0%
CCO Holdings LLC/CCO Holdings Capital Corp.
4.250% 1/15/34 (b)		65,000		53,317
4.500% 6/01/33 (b)		810,000		687,880
4.750% 3/01/30 (b)		105,000		96,583
Charter Communications Operating LLC/Charter Communications Operating Capital
3.500% 3/01/42		240,000		166,771
4.200% 3/15/28		450,000		437,512
4.400% 4/01/33 (c)		290,000		265,312
4.908% 7/23/25		56,000		55,908
5.125% 7/01/49		140,000		112,503
5.500% 4/01/63		150,000		122,221
6.550% 6/01/34		50,000		52,009
Comcast Corp.
2.887% 11/01/51		550,000		369,582
3.400% 4/01/30		525,000		503,666
3.750% 4/01/40		120,000		103,882
4.150% 10/15/28		270,000		270,421
CSC Holdings LLC
6.500% 2/01/29 (b)		700,000		579,721
DISH DBS Corp.
5.125% 6/01/29		60,000		40,256
5.750% 12/01/28 (b)		70,000		61,160
Fox Corp.
5.476% 1/25/39		90,000		90,797
6.500% 10/13/33		100,000		109,423
				4,178,924
Mining — 0.8%
Anglo American Capital PLC
4.750% 4/10/27 (b)		230,000		231,113
Barrick North America Finance LLC
5.700% 5/30/41		80,000		84,390
5.750% 5/01/43		80,000		85,014
BHP Billiton Finance USA Ltd.
5.000% 9/30/43		100,000		100,297

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
First Quantum Minerals Ltd.
8.625% 6/01/31 (b)	$	200,000	$	200,400
Freeport-McMoRan, Inc.
4.625% 8/01/30		120,000		119,857
5.450% 3/15/43		230,000		230,988
Glencore Funding LLC
1.625% 4/27/26 (b)		120,000		115,151
3.375% 9/23/51 (b)		45,000		31,767
4.000% 3/27/27 (b)		140,000		138,690
Southern Copper Corp.
5.250% 11/08/42		250,000		244,113
				1,581,780
Oil & Gas — 2.8%
BP Capital Markets America, Inc.
2.939% 6/04/51		50,000		33,986
3.001% 3/17/52		230,000		157,883
3.633% 4/06/30		120,000		116,497
Chesapeake Energy Corp.
5.875% 2/01/29 (b)		100,000		100,512
Continental Resources, Inc.
2.268% 11/15/26 (b)		195,000		184,822
5.750% 1/15/31 (b)		250,000		255,780
Coterra Energy, Inc.
3.900% 5/15/27		230,000		226,589
4.375% 3/15/29		220,000		217,218
Devon Energy Corp.
5.000% 6/15/45		390,000		348,180
5.600% 7/15/41		140,000		137,228
5.850% 12/15/25		120,000		121,218
Diamondback Energy, Inc.
3.500% 12/01/29		160,000		152,177
Ecopetrol SA
5.875% 5/28/45		770,000		578,023
EOG Resources, Inc.
3.900% 4/01/35		200,000		187,470
4.375% 4/15/30		60,000		60,442
4.950% 4/15/50		30,000		28,929
Exxon Mobil Corp.
3.482% 3/19/30		190,000		184,575
4.227% 3/19/40		85,000		79,577
4.327% 3/19/50		20,000		18,115
KazMunayGas National Co. JSC
5.375% 4/24/30 (b)		200,000		201,520
Marathon Petroleum Corp.
5.125% 12/15/26		185,000		187,904
Occidental Petroleum Corp.
6.125% 1/01/31		85,000		89,699
6.450% 9/15/36		50,000		53,998
6.600% 3/15/46 (c)		310,000		333,556
6.625% 9/01/30		60,000		64,731
Permian Resources Operating LLC
6.250% 2/01/33 (b)		50,000		50,807
Petrobras Global Finance BV
5.999% 1/27/28 (c)		760,000		776,421
Pioneer Natural Resources Co.
1.900% 8/15/30		170,000		149,044

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Reliance Industries Ltd.
3.625% 1/12/52 (b)	$	330,000	$	250,041
Shell International Finance BV
2.750% 4/06/30		240,000		223,528
3.250% 4/06/50		280,000		207,791
Southwestern Energy Co.
4.750% 2/01/32		70,000		66,963
5.375% 2/01/29		75,000		74,747
				5,919,971
Oil & Gas Services — 0.1%
Halliburton Co.
2.920% 3/01/30		105,000		97,519
5.000% 11/15/45		100,000		95,795
				193,314
Pharmaceuticals — 2.9%
AbbVie, Inc.
2.600% 11/21/24		880,000		876,988
2.950% 11/21/26		260,000		254,524
3.200% 11/21/29		600,000		573,781
4.700% 5/14/45		25,000		24,192
4.800% 3/15/29		130,000		133,790
4.950% 3/15/31		60,000		62,387
5.050% 3/15/34		80,000		83,562
Bausch Health Cos., Inc.
6.125% 2/01/27 (b) (c)		50,000		45,158
Bristol-Myers Squibb Co.
4.350% 11/15/47		120,000		107,429
5.100% 2/22/31		70,000		73,298
5.200% 2/22/34		210,000		221,460
5.550% 2/22/54		30,000		31,782
5.650% 2/22/64		20,000		21,194
CVS Health Corp.
2.125% 9/15/31		330,000		278,848
4.250% 4/01/50		70,000		56,501
4.300% 3/25/28		580,000		578,438
5.050% 3/25/48		220,000		200,800
Eli Lilly & Co.
4.600% 8/14/34		80,000		81,255
4.700% 2/09/34		180,000		184,015
5.000% 2/09/54		20,000		20,333
5.100% 2/09/64		140,000		143,023
Johnson & Johnson
3.625% 3/03/37		160,000		148,568
Merck & Co., Inc.
1.450% 6/24/30		120,000		104,061
Pfizer, Inc.
1.700% 5/28/30 (c)		280,000		247,106
Teva Pharmaceutical Finance Netherlands III BV
3.150% 10/01/26		1,700,000		1,634,052
				6,186,545
Pipelines — 3.8%
Blue Racer Midstream LLC/Blue Racer Finance Corp.
7.250% 7/15/32 (b)		50,000		52,470

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Cameron LNG LLC
3.302% 1/15/35 (b)	$	150,000	$	129,450
Columbia Pipelines Operating Co. LLC
6.036% 11/15/33 (b)		260,000		277,420
6.544% 11/15/53 (b)		30,000		33,788
Energy Transfer LP
3.750% 5/15/30		230,000		219,713
3.900% 7/15/26		710,000		703,315
4.750% 1/15/26		240,000		240,282
5.550% 5/15/34		100,000		103,541
6.250% 4/15/49		320,000		336,480
Enterprise Products Operating LLC
3.700% 1/31/51		140,000		108,947
4.150% 10/16/28		1,030,000		1,029,398
4.850% 1/31/34 (c)		220,000		223,182
EQM Midstream Partners LP
4.750% 1/15/31 (b)		140,000		135,563
Kinder Morgan Energy Partners LP
6.950% 1/15/38		125,000		142,065
Kinder Morgan, Inc.
4.300% 3/01/28		110,000		110,195
MPLX LP
4.700% 4/15/48		400,000		348,845
ONEOK, Inc.
5.550% 11/01/26		40,000		40,906
5.800% 11/01/30		70,000		74,522
6.050% 9/01/33		100,000		106,847
6.625% 9/01/53		110,000		122,060
Targa Resources Corp.
4.950% 4/15/52		40,000		36,000
Targa Resources Partners LP/Targa Resources Partners Finance Corp.
4.875% 2/01/31		140,000		138,969
Venture Global LNG, Inc.
7.000% 1/15/30 (b)		130,000		132,810
Western Midstream Operating LP
3.100% STEP 2/01/25		240,000		237,992
4.050% STEP 2/01/30		900,000		866,532
5.250% STEP 2/01/50		1,610,000		1,460,071
Williams Cos., Inc.
3.500% 11/15/30 (c)		70,000		66,178
3.500% 10/15/51		125,000		90,799
3.750% 6/15/27		250,000		246,316
5.150% 3/15/34		170,000		171,853
				7,986,509
Real Estate Investment Trusts (REITS) — 0.1%
Crown Castle, Inc.
3.300% 7/01/30		35,000		32,728
Service Properties Trust
8.375% 6/15/29		80,000		79,910
				112,638
Retail — 0.4%
Costco Wholesale Corp.
1.375% 6/20/27		20,000		18,760
1.600% 4/20/30		20,000		17,666
Home Depot, Inc.

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
2.700% 4/15/30	$	70,000	$	65,117
3.300% 4/15/40		120,000		100,292
3.350% 4/15/50		260,000		199,842
Lowe's Cos., Inc.
4.500% 4/15/30		50,000		50,643
McDonald's Corp.
3.500% 7/01/27		300,000		295,831
3.600% 7/01/30		90,000		87,358
Walmart, Inc.
1.500% 9/22/28		60,000		55,172
1.800% 9/22/31		20,000		17,394
				908,075
Semiconductors — 0.4%
Broadcom, Inc.
3.419% 4/15/33 (b)		296,000		268,946
Intel Corp.
1.600% 8/12/28		120,000		107,296
Micron Technology, Inc.
5.300% 1/15/31		90,000		93,516
5.875% 2/09/33		60,000		64,072
NVIDIA Corp.
3.700% 4/01/60		170,000		139,889
NXP BV/NXP Funding LLC/NXP USA, Inc.
3.875% 6/18/26		85,000		84,289
				758,008
Software — 0.2%
Microsoft Corp.
2.921% 3/17/52		30,000		22,026
Oracle Corp.
1.650% 3/25/26		230,000		221,088
3.850% 4/01/60		250,000		188,189
4.650% 5/06/30		20,000		20,394
5.375% 9/27/54		40,000		39,976
				491,673
Telecommunications — 1.8%
AT&T, Inc.
2.750% 6/01/31		160,000		144,662
3.500% 9/15/53		309,000		227,014
3.550% 9/15/55		215,000		157,258
Rogers Communications, Inc.
5.300% 2/15/34		110,000		111,909
T-Mobile USA, Inc.
2.250% 2/15/26		205,000		199,315
2.550% 2/15/31		60,000		53,478
3.375% 4/15/29		50,000		47,988
3.400% 10/15/52		230,000		168,357
3.500% 4/15/25		130,000		129,073
3.500% 4/15/31		700,000		658,670
3.875% 4/15/30		430,000		418,162
5.150% 4/15/34		80,000		82,415
Telefonica Emisiones SA
5.213% 3/08/47		150,000		142,290
Verizon Communications, Inc.

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
2.650% 11/20/40	$	15,000	$	11,052
3.850% 11/01/42		430,000		367,387
3.875% 2/08/29		550,000		542,600
3.875% 3/01/52		435,000		356,585
				3,818,215
Transportation — 0.2%
Union Pacific Corp.
2.150% 2/05/27		50,000		47,941
2.891% 4/06/36		270,000		232,315
3.750% 2/05/70		150,000		113,566
3.839% 3/20/60		120,000		95,879
				489,701

TOTAL CORPORATE DEBT (Cost $79,958,925)				78,362,575

NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 14.7%
Automobile Asset-Backed Securities — 0.5%
Avis Budget Rental Car Funding AESOP LLC
Series 2024-3A, Class A, 5.230% 12/20/30 (b)		520,000		533,637
Series 2024-1A, Class A, 5.360% 6/20/30 (b)		430,000		443,311
				976,948
Commercial Mortgage-Backed Securities — 5.2%
Bank
Series 2020-BN28, Class AS, 2.140% 3/15/63		380,000		319,403
Series 2022-BNK39, Class AS, 3.181% 2/15/55		302,000		264,820
Series 2017-BNK8, Class A3, 3.229% 11/15/50		266,465		257,103
Benchmark Mortgage Trust
Series 2020-B19, Class AS, 2.148% 9/15/53		380,000		305,497
Series 2020-B18, Class AGNF, 4.139% 7/15/53 (b)		378,000		357,022
BPR Trust
Series 2021-TY, Class A, 1 mo. USD Term SOFR + 1.164% 6.262% FRN 9/15/38 (b)		550,000		545,187
Series 2022-OANA, Class A, 1 mo. USD Term SOFR + 1.898% 6.995% FRN 4/15/37 (b)		460,000		461,435
BX Commercial Mortgage Trust
Series 2024-XL5, Class A, 1 mo. USD Term SOFR + 1.392% 6.488% FRN 3/15/41 (b)		157,176		157,078
Series 2023-XL3, Class A, 1 mo. USD Term SOFR + 1.761% 6.858% FRN 12/09/40 (b)		170,410		170,942
Series 2021-VOLT, Class F, 1 mo. USD Term SOFR + 2.514% 7.611% FRN 9/15/36 (b)		405,000		401,967
Series 2024-BIO2, Class D, 7.970% VRN 8/13/41 (b) (f)		100,000		100,470
Series 2021-21M, Class H, 1 mo. USD Term SOFR + 4.124% 9.222% FRN 10/15/36 (b)		277,200		271,661
BX Trust, Series 2019-OC11, Class E,
4.076% VRN 12/09/41 (b) (f)		374,000		334,930
CD Mortgage Trust, Series 2017-CD3, Class A4
3.631% 2/10/50		120,000		113,919
CFCRE Commercial Mortgage Trust, Series 2016-C3, Class XA,
1.111% VRN 1/10/48 (f)		4,636,184		37,230
Citigroup Commercial Mortgage Trust
Series 2019-GC41, Class B, 3.199% 8/10/56		163,000		140,505
Series 2020-420K, Class D, 3.422% VRN 11/10/42 (b) (f)		200,000		174,699

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2020-420K, Class E, 3.422% VRN 11/10/42 (b) (f)	$	200,000	$	166,246
Series 2017-C4, Class B, 4.096% VRN 10/12/50 (f)		340,000		315,933
CSAIL Commercial Mortgage Trust
Series 2015-C1, Class XA, 0.870% VRN 4/15/50 (f)		5,091,976		5,624
Series 2019-C16, Class B, 3.885% 6/15/52		334,000		297,351
CSMC Trust, Series 2021-B33, Class B,
3.766% VRN 10/10/43 (b) (f)		300,000		263,059
DTP Commercial Mortgage Trust, Series 2023-STE2, Class A,
6.038% VRN 1/15/41 (b) (f)		220,000		225,542
GS Mortgage Securities Corp. II, Series 2024-70P, Class E,
9.263% VRN 3/10/41 (b) (f)		250,000		260,149
GS Mortgage Securities Corp. Trust, Series 2018-RIVR, Class C, 1 mo. USD Term SOFR + 1.547%
6.644% FRN 7/15/35 (b)		167,000		8,390
GS Mortgage Securities Trust, Series 2015-GS1, Class XA,
0.900% VRN 11/10/48 (f)		7,377,203		42,460
HPLY Trust, Series 2019-HIT, Class F, 1 mo. USD Term SOFR + 3.264%
8.383% FRN 11/15/36 (b)		377,250		373,963
JP Morgan Chase Commercial Mortgage Securities Trust
Series 2015-JP1, Class XA, 1.034% VRN 1/15/49 (f)		3,192,536		33,897
Series 2016-JP2, Class B, 3.460% 8/15/49		174,000		155,643
JPMBB Commercial Mortgage Securities Trust
Series 2015-C30, Class XA, 0.554% VRN 7/15/48 (f)		7,470,669		14,221
Series 2015-C29, Class XA, 0.673% VRN 5/15/48 (f)		5,142,285		13,621
Series 2014-C25, Class XA, 0.897% VRN 11/15/47 (f)		1,951,119		3,119
Series 2015-C28, Class XA, 1.003% VRN 10/15/48 (f)		5,158,458		12,346
Series 2014-C23, Class D, 4.214% VRN 9/15/47 (b) (f)		391,000		339,573
KIND Trust, Series 2021-KIND, Class A, 1 mo. USD Term SOFR + 1.064%
6.165% FRN 8/15/38 (b)		158,675		156,443
Morgan Stanley Bank of America Merrill Lynch Trust, Series 2016-C30, Class A4
2.600% 9/15/49		108,055		104,359
Morgan Stanley Capital I Trust, Series 2015-UBS8, Class XA,
0.996% VRN 12/15/48 (f)		5,229,134		31,860
MSWF Commercial Mortgage Trust
Series 2023-1, Class A4, 5.472% 5/15/56		250,000		262,388
Series 2023-2, Class A5, 6.014% VRN 12/15/56 (f)		250,000		274,369
MTN Commercial Mortgage Trust, Series 2022-LPFL, Class A, 1 mo. USD Term SOFR + 1.397%
6.497% FRN 3/15/39 (b)		540,000		536,291
NJ Trust, Series 2023-GSP, Class A,
6.697% VRN 1/06/29 (b) (f)		200,000		212,025
NRTH Mortgage Trust, Series 2024-PARK, Class A, 1 mo. USD Term SOFR + 1.641%
6.738% FRN 3/15/39 (b)		250,000		249,766
NYC Trust, Series 2024-3ELV, Class A, 1 mo. USD Term SOFR + 1.991%
7.088% FRN 8/15/29 (b)		120,000		120,449
ONNI Commerical Mortgage Trust, Series 2024-APT, Class A,
5.753% VRN 7/15/39 (b) (f)		330,000		335,276
PFP Ltd., Series 2024-11, Class A, 1 mo. USD Term SOFR + 1.832%
6.915% FRN 9/17/39 (b)		100,000		100,063
SG Commercial Mortgage Securities Trust, Series 2016-C5, Class XA,
1.982% VRN 10/10/48 (f)		2,797,589		57,153
SLG Office Trust, Series 2021-OVA, Class E
2.851% 7/15/41 (b)		260,000		209,992
TTAN, Series 2021-MHC, Class F, 1 mo. USD Term SOFR + 3.014%
8.112% FRN 3/15/38 (b)		297,057		293,276
Wells Fargo Commercial Mortgage Trust

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2015-NXS2, Class XA, 0.721% VRN 7/15/58 (f)	$	8,713,570	$	28,687
Series 2015-P2, Class XA, 1.075% VRN 12/15/48 (f)		3,363,135		22,528
Series 2019-C53, Class XA, 1.109% VRN 10/15/52 (f)		3,785,114		160,306
Series 2017-C38, Class A4, 3.190% 7/15/50		285,050		274,573
Series 2016-C35, Class B, 3.438% 7/15/48		328,000		313,850
Series 2024-C63, Class A5, 5.309% 8/15/57		140,000		146,739
				10,835,398
Home Equity Asset-Backed Securities — 0.0%
Washington Mutual Asset-Backed Certificates Trust, Series 2006-HE5, Class 2A2, 1 mo. USD Term SOFR + 0.474%
4.238% FRN 10/25/36		51,716		17,600
Other Asset-Backed Securities — 3.4%
AB BSL CLO 4 Ltd., Series 2023-4A, Class A, 3 mo. USD Term SOFR + 2.000%
7.282% FRN 4/20/36 (b)		200,000		201,189
ARES Loan Funding IV Ltd., Series 2023-ALF4A, Class A1, 3 mo. USD Term SOFR + 1.750%
7.051% FRN 10/15/36 (b)		450,000		453,168
Birch Grove CLO 4 Ltd., Series 2022-4A, Class A1R, 3 mo. USD Term SOFR + 1.480%
6.781% FRN 7/15/37 (b)		170,000		170,595
Birch Grove CLO 7 Ltd., Series 2023-7A, Class A1, 3 mo. USD Term SOFR + 1.800%
7.082% FRN 10/20/36 (b)		200,000		201,260
Blackbird Capital Aircraft Lease Securitization Ltd., Series 2016-1A, Class B,
5.682% STEP 12/16/41 (b)		408,007		406,497
CarVal CLO XI C Ltd., Series 2024-3A, Class A1, 3 mo. USD Term SOFR + 1.390%
5.961% FRN 10/20/37 (b)		240,000		240,360
Cayuga Park CLO Ltd., Series 2020-1A, Class AR, 3 mo. USD Term SOFR + 1.382%
6.667% FRN 7/17/34 (b)		200,000		200,410
CLI Funding VI LLC, Series 2020-3A, Class A
2.070% 10/18/45 (b)		141,250		131,395
Dividend Solar Loans LLC, Series 2018-1, Class B
4.290% 7/20/38 (b)		440,602		396,552
Dryden 55 CLO Ltd., Series 2018-55A, Class A1, 3 mo. USD Term SOFR + 1.282%
6.583% FRN 4/15/31 (b)		219,167		219,168
Elmwood CLO 29 Ltd., Series 2024-5A, Class AR1, 3 mo. USD Term SOFR + 1.520%
6.841% FRN 4/20/37 (b)		170,000		171,317
Elmwood CLO I Ltd., Series 2019-1A, Class A1RR, 3 mo. USD Term SOFR + 1.520%
6.802% FRN 4/20/37 (b)		100,000		100,250
Empower CLO Ltd., Series 2023-2A, Class A1, 3 mo. USD Term SOFR + 2.200%
7.501% FRN 7/15/36 (b)		270,000		272,677
Hero Funding Trust, Series 2016-4A, Class A2
4.290% 9/20/47 (b)		76,016		71,304
HPS Loan Management Ltd., Series 15A-19, Class A1R, 3 mo. USD Term SOFR + 1.320%
6.602% FRN 1/22/35 (b)		250,000		250,120
M&T Equipment Notes, Series 2024-1, Class A4
4.940% 8/18/31 (b)		250,000		252,031

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
MACH 1 Cayman Ltd., Series 2019-1, Class A
3.474% 10/15/39 (b)	$	233,536	$	217,219
Mosaic Solar Loan Trust, Series 2020-2A, Class B
2.210% 8/20/46 (b)		222,768		184,203
Mosaic Solar Loans LLC, Series 2017-1A, Class A
4.450% 6/20/42 (b)		151,903		148,699
Neuberger Berman CLO XX Ltd., Series 2015-20A, Class ARR, 3 mo. USD Term SOFR + 1.422%
6.723% FRN 7/15/34 (b)		250,000		250,049
Octagon 66 Ltd., Series 2022-1A, Class A1R, 3 mo. USD Term SOFR + 1.750%
6.846% FRN 11/16/36 (b)		250,000		251,688
Rad CLO 22 Ltd., Series 2023-22A, Class A1, 3 mo. USD Term SOFR + 1.830%
7.112% FRN 1/20/37 (b)		400,000		403,008
Sunnova Helios IV Issuer LLC, Series 2020-AA, Class A
2.980% 6/20/47 (b)		333,094		298,654
Sunnova Helios VII Issuer LLC, Series 2021-C, Class C
2.630% 10/20/48 (b)		412,686		273,926
Symphony CLO 40 Ltd., Series 2023-40A, Class A1, 3 mo. USD Term SOFR + 1.640%
6.941% FRN 1/14/34 (b)		380,000		380,393
Textainer Marine Containers VII Ltd.
Series 2020-2A, Class A, 2.100% 9/20/45 (b)		306,120		285,463
Series 2024-1A, Class A, 5.250% 8/20/49 (b)		198,400		199,352
Vault DI Issuer LLC, Series 2021-1A, Class A2
2.804% 7/15/46 (b)		500,000		454,789
Whitebox CLO II Ltd., Series 2020-2A, Class A1R, 3 mo. USD Term SOFR + 1.482%
6.765% FRN 10/24/34 (b)		150,000		150,083
				7,235,819
Student Loans Asset-Backed Securities — 0.9%
College Avenue Student Loans LLC, Series 2018-A, Class A1, 1 mo. USD Term SOFR + 1.314%
6.169% FRN 12/26/47 (b)		155,902		155,889
ELFI Graduate Loan Program LLC, Series 2020-A, Class A
1.730% 8/25/45 (b)		243,521		219,283
SMB Private Education Loan Trust
Series 2024-A, Class A1A, 5.240% 3/15/56 (b)		275,992		280,340
Series 2024-C, Class A1B, 30 day USD SOFR Average + 1.100% 6.442% FRN 6/17/52 (b)		336,505		333,773
SoFi Professional Loan Program LLC
Series 2017-D, Class BFX, 3.610% 9/25/40 (b)		350,000		330,580
Series 2018-B, Class BFX, 3.830% 8/25/47 (b)		500,000		468,966
				1,788,831
Whole Loan Collateral Collateralized Mortgage Obligations — 4.7%
Citigroup Mortgage Loan Trust, Series 2007-AR5, Class 1A2A,
4.928% VRN 4/25/37 (f)		431,378		394,737
Countrywide Home Loans Mortgage Pass-Through Trust
Series 2007-HYB2, Class 3A1, 4.338% VRN 2/25/47 (f)		625,358		583,550
Series 2007-3, Class A21, 6.000% 4/25/37		1,283,698		632,213
Series 2007-14, Class A6, 6.000% 9/25/37		1,122,119		596,002
GCAT Trust, Series 2024-INV3, Class A17,
6.500% VRN 9/25/54 (b) (f)		98,192		99,684

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
HarborView Mortgage Loan Trust, Series 2006-11, Class A1A, 1 mo. USD Term SOFR + 0.454%
5.419% FRN 12/19/36	$	352,126	$	315,907
HOMES Trust, Series 2024-NQM1, Class A1,
5.915% STEP 7/25/69 (b)		398,106		403,386
Imperial Fund Mortgage Trust, Series 2021-NQM2, Class M1,
2.489% VRN 9/25/56 (b) (f)		1,028,000		740,857
Morgan Stanley Mortgage Loan Trust, Series 2005-3AR, Class 2A1,
3.701% VRN 7/25/35 (f)		196,888		178,636
Morgan Stanley Residential Mortgage Loan Trust
Series 2024-INV2, Class A1, 6.500% VRN 2/25/54 (b) (f)		515,440		523,273
Series 2024-INV3, Class A1, 6.500% VRN 6/25/54 (b) (f)		384,298		390,137
New Residential Mortgage Loan Trust, Series 2022-NQM4, Class A1,
5.000% STEP 6/25/62 (b)		414,615		420,415
OBX Trust, Series 2024-NQM11, Class A1,
5.875% STEP 6/25/64 (b)		397,634		403,172
PRKCM Trust, Series 2023-AFC1, Class A1,
6.598% STEP 2/25/58 (b)		323,235		327,147
RBSSP Resecuritization Trust, Series 2009-5, Class 2A3,
6.500% VRN 10/26/37 (b) (f)		623,691		263,158
RCKT Mortgage Trust, Series 2024-INV1, Class A1,
6.500% VRN 6/25/54 (b) (f)		387,637		393,043
RFMSI Trust, Series 2007-S4, Class A5, 1 mo. USD Term SOFR + 0.714%
6.000% FRN 4/25/37		138,434		113,947
Structured Adjustable Rate Mortgage Loan Trust, Series 2008-1, Class A2,
5.115% VRN 10/25/37 (f)		459,921		373,612
Verus Securitization Trust
Series 2021-4, Class M1, 2.195% VRN 7/25/66 (b) (f)		1,000,000		690,821
Series 2021-R1, Class M1, 2.338% 10/25/63 (b)		1,500,000		1,365,992
Series 2022-6, Class A1, 4.910% STEP 6/25/67 (b)		232,266		231,123
Washington Mutual Mortgage Pass-Through Certificates Trust, Series 2006-4, Class 3A5,
6.850% STEP 5/25/36		569,141		506,638
				9,947,450

TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $37,236,339)				30,802,046

SOVEREIGN DEBT OBLIGATIONS — 5.8%
Brazil Letras do Tesouro Nacional
1/01/26BRL (e)		708,000		112,417
Brazil Notas do Tesouro Nacional Series F
10.000% 1/01/27 BRL (e)		2,920,000		513,304
10.000% 1/01/33 BRL (e)		3,249,000		529,488
Brazilian Government International Bond
3.750% 9/12/31		950,000		857,371
5.625% 2/21/47 (c)		300,000		264,456
Colombia Government International Bond
3.250% 4/22/32		230,000		185,303
4.125% 2/22/42		440,000		302,796
Indonesia Government International Bond
3.500% 1/11/28		320,000		314,112
Israel Government International Bond
2.750% 7/03/30		310,000		271,637
Jamaica Government International Bond
9.625% 11/03/30 JMD (e)		22,000,000		146,717
Mexican Bonos

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
7.750% 11/23/34 MXN (e)	$	8,220,000	$	373,620
7.750% 11/13/42 MXN (e)		152,850,000		6,465,578
Mexico Government International Bond
2.659% 5/24/31		200,000		171,693
3.750% 1/11/28		205,000		199,587
4.280% 8/14/41		450,000		367,174
Nigeria Government International Bond
7.143% 2/23/30 (b)		210,000		190,312
Peruvian Government International Bond
6.550% 3/14/37		260,000		290,999
Provincia de Buenos Aires/Government Bond,
6.625% STEP 9/01/37 (b)		520,236		247,112
Republic of Kenya Government International Bond
6.300% 1/23/34 (b)		370,000		302,599
Uruguay Government International Bond
3.875% 7/02/40 UYU (e)		5,017,408		125,029
				12,231,304

TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $12,543,850)				12,231,304

U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (g) — 33.9%
Collateralized Mortgage Obligations — 4.6%
Federal Home Loan Mortgage Corp. Multifamily Structured Pass-Through Certificates
Series K-157, Class X1, 0.419% VRN 5/25/33 (f)		10,398,543		232,498
Series K-154, Class X1, 0.527% VRN 1/25/33 (f)		7,097,279		199,414
Series K124, Class X1, 0.808% VRN 12/25/30 (f)		5,861,939		215,829
Federal Home Loan Mortgage Corp. REMICS
Series 5092, Class AP, 2.000% 4/25/41		73,948		65,716
Series 4991, Class QV, 2.000% 9/25/45		91,136		77,540
Series 5085, Class NI, 2.000% 3/25/51		1,279,570		151,227
Series 5274, Class IO, 2.500% 1/25/51		623,855		103,398
Series 5071, Class IH, 2.500% 2/25/51		233,463		31,757
Series 5377, Class IO, 2.500% 12/25/51		850,041		104,556
Series 4481, Class B, 3.000% 12/15/42		759,108		739,590
Series 4483, Class CA, 3.000% 6/15/44		1,336,451		1,291,136
Series 4391, Class MZ, 3.000% 9/15/44		134,935		120,829
Series 5180, Class IN, 3.000% 7/25/51		1,290,912		251,348
Federal National Mortgage Association REMICS
Series 2018-21, 0.000% 4/25/48		566,534		427,758
Series 2021-48, Class NS, 30 day USD SOFR Average + 3.650% 0.000% FRN 8/25/51		970,145		38,409
Series 2021-65, Class JA, 2.000% 1/25/46		67,969		61,329
Series 2020-57, Class TA, 2.000% 4/25/50		225,975		198,587
Series 2020-56, Class AQ, 2.000% 8/25/50		300,000		241,380
Series 2014-6, Class Z, 2.500% 2/25/44		130,525		115,510
Series 2012-118, Class VZ, 3.000% 11/25/42		120,124		110,063
Series 2021-18, Class ZG, 3.000% 6/25/50		2,673,130		1,858,031
Series 2020-96, Class IN, 3.000% 1/25/51		369,572		63,133
Series 2015-65, Class CZ, 3.500% 9/25/45		137,363		121,715
Government National Mortgage Association
Series 2022-210, Class IO, 0.699% VRN 7/16/64 (f)		1,468,958		93,257
Series 2022-216, Class IO, 0.749% VRN 7/16/65 (f)		1,479,375		97,987
Series 2020-91, Class IU, 0.989% VRN 5/16/62 (f)		3,612,004		251,883
Series 2022-3, Class B, 1.850% 2/16/61		500,000		280,128
Series 2020-175, Class GI, 2.000% 11/20/50		134,705		15,699

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2022-113, Class Z, 2.000% 9/16/61	$	1,255,186	$	701,134
Series 2023-92, Class AH, 2.000% 6/16/64		99,923		78,666
Series 2022-220, Class E, 3.000% VRN 10/16/64 (f)		100,000		77,632
Government National Mortgage Association REMICS
Series 2021-103, Class SA, 30 day USD SOFR Average + 3.250% 0.000% FRN 4/20/51		1,075,980		25,296
Series 2021-115, Class MI, 2.500% 5/20/51		497,903		55,829
Series 2021-96, Class VI, 2.500% 6/20/51		398,839		56,846
Series 2021-176, Class IN, 2.500% 10/20/51		476,432		68,926
Series 2022-189, Class PT, 2.500% 10/20/51		89,066		77,098
Series 2022-99, Class JW, 2.500% 1/20/52		100,000		83,750
Series 2021-57, Class BI, 3.000% 3/20/51		589,470		97,543
Series 2021-98, Class IG, 3.000% 6/20/51		867,559		148,201
Series 2021-137, Class IQ, 3.000% 8/20/51		1,150,235		190,953
Series 2021-117, Class ID, 3.500% 6/20/51		647,445		113,308
Series 2023-130, Class IO, 4.000% 8/20/47		1,344,478		237,896
Series 2020-H20, Class FA, 1 mo. USD Term SOFR + 0.464% 5.817% FRN 4/20/70		167,543		165,386
				9,738,171
Pass-Through Securities — 27.9%
Federal Home Loan Mortgage Corp.
Pool #RB5084 1.500% 11/01/40		411,461		349,432
Pool #RB5110 1.500% 5/01/41		459,132		389,917
Pool #RB5117 1.500% 7/01/41		389,991		329,858
Pool #RA4537 1.500% 2/01/51		77,528		61,721
Pool #RB5105 2.000% 3/01/41		211,593		184,958
Pool #RB5131 2.000% 10/01/41		547,095		476,516
Pool #RB0714 2.000% 12/01/41		80,295		70,062
Pool #RB5138 2.000% 12/01/41		398,581		347,162
Pool #SC0313 2.000% 1/01/42		435,295		378,187
Pool #QK1354 2.000% 2/01/42		81,467		70,779
Pool #RB5145 2.000% 2/01/42		655,971		569,912
Pool #SC0384 2.000% 4/01/42		269,043		235,176
Pool #RB5153 2.000% 4/01/42		756,355		655,945
Pool #SC0319 2.000% 4/01/42		85,257		74,258
Pool #SD8079 2.000% 7/01/50		166,491		138,665
Pool #QB3535 2.000% 9/01/50		488,836		406,830
Pool #QB4985 2.000% 11/01/50		69,296		58,017
Pool #SD0715 2.000% 9/01/51		1,639,936		1,381,738
Pool #QD3960 2.000% 1/01/52		332,588		277,522
Pool #RB5149 2.500% 3/01/42		81,633		73,410
Pool #RB5154 2.500% 4/01/42		166,994		149,912
Pool #QK1449 2.500% 4/01/42		165,593		148,654
Pool #G08520 2.500% 1/01/43		426,953		388,476
Pool #SD7521 2.500% 7/01/50		181,584		159,434
Pool #SD7525 2.500% 10/01/50		572,678		502,107
Pool #RA3913 2.500% 11/01/50		211,041		185,034
Pool #RA4142 2.500% 12/01/50		263,965		231,436
Pool #SD7534 2.500% 2/01/51		134,529		118,287
Pool #SD2991 2.500% 9/01/51		88,329		77,417
Pool #QC7086 2.500% 9/01/51		232,289		201,921
Pool #SD0777 2.500% 11/01/51		80,921		70,496
Pool #SD0857 2.500% 1/01/52		421,179		367,303
Pool #SD5344 2.500% 4/01/52		96,133		83,235
Pool #SD1749 2.500% 4/01/52		86,692		75,630
Pool #SD7554 2.500% 4/01/52		995,476		870,937
Pool #841703 1 yr. USD RFUCCT + 1.634% 2.638% FRN 12/01/50		272,866		257,545

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #QK1512 3.000% 5/01/42	$	152,352	$	140,987
Pool #RA2797 3.000% 6/01/50		51,916		46,761
Pool #QC3242 3.000% 6/01/51		404,566		368,223
Pool #SD8174 3.000% 10/01/51		1,244,402		1,121,411
Pool #SD0781 3.000% 11/01/51		73,532		66,421
Pool #QD7333 3.000% 2/01/52		86,608		78,367
Pool #QD6216 3.000% 2/01/52		81,693		73,921
Pool #SD7555 3.000% 8/01/52		834,577		759,605
Pool #G08632 3.500% 3/01/45		564,066		536,775
Pool #SD2866 4.000% 7/01/49		87,906		85,818
Pool #SD1218 4.000% 7/01/49		295,968		287,829
Pool #SD5352 4.000% 7/01/50		474,848		465,055
Pool #RA7185 4.000% 4/01/52		326,376		315,973
Pool #RA7186 4.000% 4/01/52		162,064		157,101
Pool #SD7560 4.000% 2/01/53		174,468		169,725
Pool #SD2792 4.500% 3/01/47		83,063		83,781
Pool #SD1143 4.500% 9/01/50		1,064,923		1,061,834
Pool #SD0615 4.500% 1/01/51		77,862		77,612
Pool #SD1807 4.500% 7/01/52		87,467		86,558
Pool #SD2394 4.500% 11/01/52		89,062		87,857
Pool #SD1775 4.500% 11/01/52		177,868		176,018
Pool #SD2355 4.500% 12/01/52		86,124		84,960
Pool #SD1305 5.000% 7/01/52		417,383		417,901
Pool #SD2591 5.000% 3/01/53		88,634		89,230
Pool #RA8790 5.000% 4/01/53		181,803		182,514
Pool #RA8694 5.000% 4/01/53		181,794		183,641
Pool #SD3722 5.000% 5/01/53		84,939		85,484
Pool #SD2245 5.500% 12/01/52		88,342		89,905
Pool #SD2138 5.500% 1/01/53		92,246		94,160
Pool #SD2723 5.500% 3/01/53		90,966		92,575
Pool #SD2688 5.500% 4/01/53		90,680		92,426
Pool #SD2511 5.500% 4/01/53		86,990		88,425
Pool #QG1295 5.500% 4/01/53		94,962		96,452
Pool #SD2762 5.500% 5/01/53		89,042		90,756
Pool #SD2756 5.500% 5/01/53		88,881		90,504
Pool #SD2892 5.500% 5/01/53		87,539		89,225
Pool #QG7311 5.500% 7/01/53		90,784		92,339
Pool #RA9437 5.500% 7/01/53		92,025		93,567
Pool #SD5384 5.500% 7/01/53		98,017		99,634
Pool #SD3475 5.500% 8/01/53		92,088		93,602
Pool #SD2284 6.000% 12/01/52		84,513		86,926
Pool #SD2578 6.000% 3/01/53		173,927		178,681
Pool #SD3432 6.000% 7/01/53		88,701		91,361
Pool #SD3642 6.000% 9/01/53		90,659		94,069
Pool #SD3737 6.000% 9/01/53		94,955		97,607
Pool #RJ1350 6.000% 4/01/54		96,431		99,004
Pool #SD5143 6.000% 4/01/54		188,429		193,633
Pool #SD5876 6.000% 5/01/54		99,774		102,361
Pool #SD5691 6.000% 6/01/54		99,723		102,330
Pool #SD5709 6.000% 7/01/54		98,370		100,994
Pool #SD2452 6.500% 2/01/53		81,169		84,282
Pool #RA8904 6.500% 4/01/53		153,036		158,906
Pool #RA9081 6.500% 5/01/53		87,589		91,413
Pool #SD4030 6.500% 10/01/53		186,045		193,739
Pool #RJ0954 6.500% 2/01/54		91,900		95,482
Pool #RJ1358 6.500% 4/01/54		98,260		102,090
Federal National Mortgage Association
Pool #MA4519 1.500% 1/01/42		82,449		69,401

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #MA4236 1.500% 1/01/51	$	78,272	$	61,922
Pool #MA4280 1.500% 3/01/51		15,969		12,634
Pool #FP0028 2.000% 8/01/40		89,201		78,614
Pool #MA4422 2.000% 9/01/41		765,338		667,561
Pool #MA4446 2.000% 10/01/41		231,317		201,476
Pool #MA4474 2.000% 11/01/41		156,536		136,342
Pool #MA4501 2.000% 12/01/41		80,013		69,691
Pool #MA4540 2.000% 2/01/42		161,638		140,432
Pool #MA4606 2.000% 5/01/42		256,449		222,404
Pool #BQ3331 2.000% 8/01/50		72,304		60,175
Pool #CA7023 2.000% 9/01/50		68,965		57,655
Pool #BQ4926 2.000% 10/01/50		67,042		55,795
Pool #CA7224 2.000% 10/01/50		136,796		114,360
Pool #MA4237 2.000% 1/01/51		217,034		180,489
Pool #FS4654 2.000% 7/01/51		181,078		150,701
Pool #FS4270 2.000% 3/01/52		90,055		75,342
Pool #BS4941 2.460% 4/01/32		978,200		870,261
Pool #MA4177 2.500% 11/01/40		54,069		49,011
Pool #FS0697 2.500% 2/01/42		77,945		70,606
Pool #MA4571 2.500% 3/01/42		80,499		72,390
Pool #MA4587 2.500% 4/01/42		166,498		149,466
Pool #BV7697 2.500% 4/01/42		345,880		310,499
Pool #MA4607 2.500% 5/01/42		83,613		75,060
Pool #FM4052 2.500% 9/01/50		2,230,897		1,955,983
Pool #FM7673 2.500% 6/01/51		296,496		258,939
Pool #FS0028 2.500% 9/01/51		78,249		68,410
Pool #BU3295 2.500% 10/01/51		166,383		144,632
Pool #FM8786 2.500% 10/01/51		79,008		69,074
Pool #CB2276 2.500% 11/01/51		82,414		71,563
Pool #FS0549 2.500% 2/01/52		251,637		219,448
Pool #FS2595 2.500% 3/01/52		174,365		152,060
Pool #FS0835 2.500% 3/01/52		83,499		72,792
Pool #FS6620 2.500% 3/01/52		189,859		165,988
Pool #FS3368 2.500% 3/01/52		87,005		75,876
Pool #FS1626 2.500% 4/01/52		170,587		148,713
Pool #BF0560 2.500% 9/01/61		80,528		67,359
Pool #FS1542 3.000% 4/01/42		157,729		147,097
Pool #CB3542 3.000% 5/01/42		79,471		74,039
Pool #MA4643 3.000% 5/01/42		83,790		77,540
Pool #MA4632 3.000% 6/01/42		341,484		316,010
Pool #MA2248 3.000% 4/01/45		261,706		237,113
Pool #AS7661 3.000% 8/01/46		251,699		227,338
Pool #FM9934 3.000% 12/01/48		786,929		720,603
Pool #FM9564 3.000% 2/01/50		920,810		842,624
Pool #CA6315 3.000% 7/01/50		84,032		76,214
Pool #CA7531 3.000% 10/01/50		68,231		62,293
Pool #FM8480 3.000% 11/01/50		56,745		51,572
Pool #FM7531 3.000% 5/01/51		60,339		54,768
Pool #FM9464 3.000% 11/01/51		150,206		136,806
Pool #BU1421 3.000% 1/01/52		82,349		74,822
Pool #FS2463 3.000% 2/01/52		513,403		464,556
Pool #FS1289 3.000% 3/01/52		395,342		361,434
Pool #FS8124 3.000% 6/01/52		290,450		263,632
Pool #CB3833 3.000% 6/01/52		86,691		78,409
Pool #CB3386 3.500% 4/01/42		81,834		78,479
Pool #FM7100 3.500% 6/01/50		104,377		98,532
Pool #FS1240 3.500% 12/01/51		79,407		74,595
Pool #FS1237 3.500% 12/01/51		231,066		218,073

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #FS2296 3.500% 1/01/52	$	393,584	$	368,501
Pool #FS1241 3.500% 1/01/52		87,653		82,231
Pool #FS1462 3.500% 1/01/52		160,284		151,222
Pool #FS1092 3.500% 4/01/52		490,017		458,946
Pool #FS1454 3.500% 4/01/52		165,778		155,387
Pool #FS1555 3.500% 4/01/52		166,242		156,064
Pool #BV8546 3.500% 5/01/52		158,197		149,054
Pool #FS1556 3.500% 5/01/52		662,447		624,164
Pool #FS1866 3.500% 5/01/52		89,395		83,838
Pool #FM3049 4.000% 4/01/44		186,416		182,969
Pool #CA2472 4.000% 10/01/48		53,429		51,760
Pool #CB3272 4.000% 4/01/52		166,108		161,021
Pool #CB3320 4.000% 4/01/52		83,822		81,151
Pool #CB3614 4.000% 5/01/52		83,022		80,479
Pool #FS2023 4.000% 5/01/52		174,381		168,932
Pool #FM1263 4.500% 7/01/49		35,574		35,459
Pool #FS4480 4.500% 3/01/50		84,071		84,511
Pool #MA4031 4.500% 5/01/50		20,435		20,319
Pool #FS0067 4.500% 9/01/51		61,583		61,462
Pool #FS2914 4.500% 9/01/52		85,555		84,665
Pool #BX2186 4.500% 11/01/52		73,924		72,762
Pool #FS3977 4.500% 11/01/52		45,394		44,781
Pool #FS3836 4.500% 1/01/53		87,317		86,136
Pool #CB3880 5.000% 6/01/52		76,927		77,589
Pool #BW0048 5.000% 7/01/52		76,972		77,243
Pool #CB4103 5.000% 7/01/52		166,274		169,782
Pool #BW9916 5.000% 10/01/52		85,882		86,007
Pool #FS3249 5.000% 11/01/52		81,972		82,267
Pool #FS5708 5.000% 6/01/53		89,700		90,443
Pool #FS5155 5.000% 7/01/53		177,571		180,707
Pool #CB5108 5.500% 11/01/52		175,668		178,776
Pool #FS3672 5.500% 2/01/53		90,795		92,884
Pool #FS4166 5.500% 4/01/53		88,445		89,814
Pool #CB6322 5.500% 5/01/53		90,452		92,053
Pool #FS4805 5.500% 5/01/53		93,571		95,073
Pool #FS5647 5.500% 7/01/53		92,101		94,012
Pool #FS5270 5.500% 7/01/53		90,607		92,295
Pool #CB7109 5.500% 9/01/53		371,005		377,104
Pool #CB5316 6.000% 12/01/52		166,107		170,694
Pool #FS4454 6.000% 4/01/53		88,721		91,366
Pool #FS4573 6.000% 5/01/53		174,541		180,016
Pool #CB6753 6.000% 7/01/53		271,484		280,084
Pool #FS5306 6.000% 7/01/53		87,395		90,819
Pool #FS6242 6.000% 11/01/53		94,596		97,623
Pool #FS7997 6.000% 5/01/54		194,495		199,137
Pool #CB5497 6.500% 1/01/53		248,100		258,856
Pool #BX7702 6.500% 2/01/53		74,261		77,110
Pool #FS7624 6.500% 3/01/54		93,179		96,811
Pool #CB8388 6.500% 4/01/54		272,924		283,051
Government National Mortgage Association II
Pool #MA6930 2.000% 10/20/50		370,929		314,698
Pool #MA7135 2.000% 1/20/51		131,342		111,472
Pool #MA7184 2.000% 2/20/51		291,779		240,708
Pool #MA7303 2.000% 4/20/51		299,484		247,064
Pool #BS8546 2.500% 12/20/50		65,893		57,470
Pool #785565 2.500% 6/20/51		77,120		67,334
Pool #785568 2.500% 8/20/51		75,784		66,072
Pool #785663 2.500% 10/20/51		75,848		66,128

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #785662 2.500% 10/20/51	$	2,105,035	$	1,826,078
Pool #785762 2.500% 11/20/51		79,594		69,344
Pool #785764 2.500% 11/20/51		585,590		511,100
Pool #785789 2.500% 12/20/51		79,173		68,978
Pool #785821 2.500% 12/20/51		81,227		70,768
Pool #MA7368 3.000% 5/20/51		180,942		165,334
Pool #MA7590 3.000% 9/20/51		501,833		458,190
Pool #786150 3.000% 3/20/52		84,355		76,017
Pool #786583 3.000% 3/20/52		176,217		159,020
Pool #786843 3.000% 3/20/52		178,290		160,779
Pool #MA5594 3.500% 11/20/48		146,799		139,012
Pool #MA6711 3.500% 6/20/50		251,540		237,804
Pool #MA6997 3.500% 11/20/50		307,774		291,088
Pool #MA7883 3.500% 2/20/52		572,560		538,612
Pool #786216 3.500% 6/20/52		159,443		148,270
Pool #MA5078 4.000% 3/20/48		158,559		154,707
Pool #MA5763 4.000% 2/20/49		137,615		134,015
Pool #MA5817 4.000% 3/20/49		57,737		56,191
Pool #MA5876 4.000% 4/20/49		45,825		44,598
Pool #MA8045 4.000% 5/20/52		170,861		165,376
Pool #CK9592 4.000% 6/20/52		81,634		78,988
Pool #786429 4.000% 6/20/52		88,119		85,538
Pool #MA5193 4.500% 5/20/48		25,402		25,385
Pool #MA5265 4.500% 6/20/48		171,301		170,917
Pool #MA5399 4.500% 8/20/48		63,937		63,714
Pool #MA5652 4.500% 12/20/48		30,690		30,573
Pool #MA5711 4.500% 1/20/49		382,908		381,332
Pool #MA5818 4.500% 3/20/49		136,809		136,246
Pool #786366 4.500% 8/20/52		175,393		173,576
Pool #786335 4.500% 9/20/52		170,919		169,201
Pool #MA5194 5.000% 5/20/48		16,812		17,132
Pool #MA5597 5.000% 11/20/48		34,138		34,723
Pool #MA5653 5.000% 12/20/48		41,390		42,061
Pool #MA5712 5.000% 1/20/49		32,874		33,407
Pool #MA5878 5.000% 4/20/49		16,637		16,907
Pool #MA6287 5.000% 11/20/49		14,831		15,114
Pool #MA6413 5.000% 1/20/50		32,861		33,455
Pool #786340 5.000% 9/20/52		87,559		88,815
Pool #MA8348 5.000% 10/20/52		86,830		87,099
Pool #MA8428 5.000% 11/20/52		176,191		176,735
Pool #MA8490 5.000% 12/20/52		529,483		530,954
Pool #786474 5.000% 1/20/53		87,714		88,917
Pool #MA8569 5.000% 1/20/53		356,935		357,927
Pool #MA8647 5.000% 2/20/53		90,049		90,299
Pool #MA8725 5.000% 3/20/53		90,941		91,193
Pool #MA8429 5.500% 11/20/52		256,371		259,220
Pool #MA8726 5.500% 3/20/53		175,148		177,040
Pool #MA8801 5.500% 4/20/53		355,123		358,958
Pool #786835 5.500% 8/20/53		94,532		96,549
Pool #787485 5.500% 7/20/54		99,706		102,114
Pool #787228 6.000% 1/20/54		756,403		784,208
Pool #787276 6.000% 2/20/54		193,565		201,225
Pool #787236 6.500% 1/20/54		183,243		191,802
Pool #787214 6.500% 1/20/54		92,054		96,526
Government National Mortgage Association II, TBA
2.000% 10/20/54 (h)		300,000		254,290
3.500% 10/20/54 (h)		400,000		375,993
4.000% 10/20/54 (h)		800,000		773,489

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
4.500% 10/20/54 (h)	$	300,000	$	296,179
5.000% 10/20/54 (h)		900,000		901,660
Uniform Mortgage-Backed Security, TBA
2.000% 10/01/54 (h)		1,100,000		909,562
2.500% 10/01/54 (h)		1,500,000		1,294,395
3.000% 10/01/54 (h)		300,000		269,250
4.500% 10/01/54 (h)		300,000		294,926
5.000% 10/01/54 (h)		900,000		899,297
5.500% 10/01/54 (h)		200,000		202,336
6.000% 10/01/54 (h)		100,000		102,191
				58,600,447
Whole Loans — 1.4%
Federal Home Loan Mortgage Corp. STACR REMICS Trust, Series 2022-DNA2, Class M2, 30 day USD SOFR Average + 3.750%
9.030% FRN 2/25/42 (b)		490,000		513,793
Federal National Mortgage Association Connecticut Avenue Securities
Series 2023-R06, Class 1M2, 30 day USD SOFR Average + 2.700% 7.980% FRN 7/25/43 (b)		240,000		247,696
Series 2022-R04, Class 1M2, 30 day USD SOFR Average + 3.100% 8.380% FRN 3/25/42 (b)		2,000,000		2,081,888
				2,843,377

TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $73,593,829)				71,181,995

U.S. TREASURY OBLIGATIONS — 5.9%
U.S. Treasury Bonds & Notes — 5.9%
U.S. Treasury Bonds
4.125% 8/15/53		250,000		248,931
4.500% 2/15/44		70,000		72,953
4.625% 5/15/54		30,000		32,541
4.750% 11/15/53		400,000		441,828
U.S. Treasury Inflation-Indexed Notes
1.125% 1/15/33		570,186		550,110
1.875% 7/15/34		2,335,522		2,392,738
U.S. Treasury Notes
3.625% 9/30/31		2,050,000		2,046,156
3.875% 8/15/34		230,000		231,618
4.000% 2/15/34 (c)		170,000		172,922
4.125% 3/31/31 (c)		5,700,000		5,855,198
4.250% 2/28/31		240,000		248,189
				12,293,184

TOTAL U.S. TREASURY OBLIGATIONS (Cost $12,083,901)				12,293,184

TOTAL BONDS & NOTES (Cost $219,812,107)				209,269,400

TOTAL PURCHASED OPTIONS(#) — 0.0% (Cost $41,044)				43,666

TOTAL LONG-TERM INVESTMENTS (Cost $219,853,151)				209,313,066

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
SHORT-TERM INVESTMENTS — 1.9%
Investment of Cash Collateral from Securities Loaned — 0.9%
State Street Navigator Securities Lending Government Money Market Portfolio (i)		1,955,185	$	1,955,185

	Principal Amount
Repurchase Agreement — 1.0%
Fixed Income Clearing Corp., Repurchase Agreement, dated 9/30/24, 1.520%, due 10/01/24 (j)	$	2,181,353		2,181,353

TOTAL SHORT-TERM INVESTMENTS (Cost $4,136,538)				4,136,538

TOTAL INVESTMENTS — 101.6% (Cost $223,989,689) (k)				213,449,604

Other Assets/(Liabilities) — (1.6)%				(3,274,751)

NET ASSETS — 100.0%			$	210,174,853

Abbreviation Legend

CLO	Collateralized Loan Obligation

CMT	Constant Maturity Treasury Index

FRN	Floating Rate Note

LIBOR

London InterBank Offered Rate

REMICS

Real Estate Mortgage Investment Conduits

RFUCCT

Refinitiv USD IBOR Consumer Cash Fallbacks Term

SOFR	Secured Overnight Financing Rate

STEP	Step Coupon Bond

TBA	To Be Announced

VRN	Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)	All or a portion of the security represents unsettled bank loan commitments at September 30, 2024, where the rate will be determined at time of settlement.

(b)

Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At September 30, 2024, the aggregate market value of these securities amounted to $42,439,241 or 20.19% of net assets.

(c)

Denotes all or a portion of security on loan. The total value of securities on loan as of September 30, 2024, was $8,390,706 or 3.99% of net assets. The Fund received $6,631,463 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(d)	Security is perpetual and has no stated maturity date.

(e)	The principal amount of the security is in foreign currency. The market value is in U.S. dollars.

(f)

Certain variable rate securities are not based on a published reference rate and spread but are determined by the issuer or agent and are based on current market conditions. These securities do not indicate a reference rate and spread in their description above. The rates shown are the current interest rates at September 30, 2024.

(g)	May contain securities that are issued by a U.S. Government Agency, but are unsecured and are not guaranteed by a U.S. Government Agency.

(h)	A portion of this security is purchased on a when-issued, delayed-delivery or forward commitment basis.

(i)	Represents investment of security lending cash collateral. (Note 2).

(j)	Maturity value of $2,181,445. Collateralized by U.S. Government Agency obligations with a rate of 4.875%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $2,225,003.

(k)	See Note 3 for aggregate cost for federal tax purposes.

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

(#) OTC Options Purchased
Description	Counterparty	Expiration Date		Exercise Price		No. of Contracts		Notional Amount		Value		Premiums Paid/(Received)		Unrealized Appreciation (Depreciation)
Call
USD Call EUR Put	JP Morgan Chase Bank N.A.		10/11/24		1.09		1,870,000	USD	1,870,000	$	748	$	10,633	$	(9,885)
USD Call CNY Put	Morgan Stanley & Co. LLC		11/25/24		7.18		1,338,000	USD	1,338,000		669		3,081		(2,412)
										$	1,417	$	13,714	$	(12,297)
Put
USD Put CAD Call	JP Morgan Chase Bank N.A.		10/30/24		1.37		1,693,000	USD	1,693,000	$	24,718	$	9,383	$	15,335
										$	26,135	$	23,097	$	3,038

(#) Exchange-Traded Options Purchased
Description	Expiration Date	Exercise Price		No. of Contracts		Notional Amount		Value		Premiums Paid/(Received)		Unrealized Appreciation (Depreciation)
Call
U.S. Treasury Note 6-7 Year Future	10/04/24		115.00		66	USD	7,542,563	$	10,312	$	11,645	$	(1,333)
Put
U.S. Treasury Note 6-7 Year Future	10/04/24		113.50		66	USD	7,542,563	$	7,219	$	6,302	$	917
								$	17,531	$	17,947	$	(416)

Exchange-Traded Options Written
Description	Expiration Date	Exercise Price		No. of Contracts		Notional Amount		Value		Premiums Paid/(Received)		Unrealized Appreciation (Depreciation)
Call
U.S. Treasury Note 6-7 Year Future	10/04/24		114.25		22	USD	2,514,188	$	(9,281)	$	(9,805)	$	524
U.S. Treasury Bond Future	11/22/24		127.00		18	USD	2,235,375		(21,656)		(38,078)		16,422
U.S. Treasury Note 10 Year Future	11/22/24		114.50		44	USD	5,028,375		(47,438)		(59,487)		12,049
3 Month SOFR Future	12/13/24		97.13		52	USD	12,474,800		(1,625)		(28,241)		26,616
3 Month SOFR Future	6/13/25		97.00		157	USD	37,990,075		(109,900)		(46,770)		(63,130)
								$	(189,900)	$	(182,381)	$	(7,519)

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

Put
U.S. Treasury Note 6-7 Year Future	10/04/24	114.25	22	USD	2,514,188	$	(8,594)	$	(8,400)	$	(194)
U.S. Treasury Long Bond Future	11/22/24	122.00	18	USD	2,235,375		(25,875)		(33,172)		7,297
U.S. Treasury Note 10 Year Future	11/22/24	113.50	44	USD	5,028,375		(36,438)		(52,518)		16,080
U.S. Treasury Note 5 Year Future	11/22/24	109.50	29	USD	3,186,602		(17,672)		(21,067)		3,395
						$	(88,579)	$	(115,157)	$	26,578
						$	(278,479)	$	(297,538)	$	19,059

Forward contracts
Counterparty	Settlement Date	Currency Purchased		Currency Sold		Unrealized Appreciation (Depreciation)
Bank of America N.A.	10/18/24	EUR	1,190,000	USD	1,317,349	$	8,166
Bank of America N.A.	10/18/24	AUD	432,286	USD	293,724		5,213
Bank of America N.A.	10/18/24	USD	998,871	MXN	18,215,802		75,890
Bank of America N.A.	10/18/24	USD	3,426,668	EUR	3,143,294		(74,575)
BNP Paribas SA	10/18/24	CHF	230,000	USD	272,771		(518)
BNP Paribas SA	10/18/24	NOK	9,250,000	USD	839,889		36,790
BNP Paribas SA	10/18/24	USD	397,575	CHF	340,000		(4,886)
BNP Paribas SA	10/18/24	USD	187,964	NOK	2,010,000		(2,536)
BNP Paribas SA	10/18/24	USD	922,856	AUD	1,358,590		(16,644)
Citibank N.A.	10/02/24	BRL	2,540,000	USD	453,964		12,288
Citibank N.A.	10/02/24	USD	466,218	BRL	2,540,000		(34)
Citibank N.A.	10/18/24	JPY	301,139,864	USD	1,925,112		174,710
Citibank N.A.	10/18/24	AUD	4,072,927	USD	2,733,654		82,879
Citibank N.A.	10/18/24	USD	528,009	MXN	10,248,657		8,717
Citibank N.A.	10/18/24	INR	18,270,000	USD	218,147		(277)
Citibank N.A.	10/18/24	CAD	780,000	USD	567,141		9,817
Citibank N.A.	10/18/24	USD	350,129	EUR	320,000		(6,311)
Citibank N.A.	10/18/24	USD	1,105,306	JPY	170,500,000		(83,576)
Citibank N.A.	10/18/24	USD	1,188,204	CAD	1,616,132		(7,233)
Citibank N.A.	10/18/24	USD	1,001,625	AUD	1,480,000		(21,833)
Goldman Sachs International	10/02/24	BRL	26,502,714	USD	4,838,521		26,416
Goldman Sachs International	10/02/24	USD	4,849,547	BRL	26,502,714		(15,389)
Goldman Sachs International	10/18/24	CHF	840,000	USD	998,311		(3,996)
Goldman Sachs International	10/18/24	NOK	4,355,364	USD	395,488		17,296
Goldman Sachs International	10/18/24	USD	2,367,398	GBP	1,842,007		(95,258)
Goldman Sachs International	10/18/24	USD	2,625,285	CHF	2,326,140		(128,186)
Goldman Sachs International	10/18/24	USD	303,566	MXN	5,770,000		11,205
Goldman Sachs International	10/18/24	USD	1,083,077	NOK	11,600,000		(16,326)
Goldman Sachs International	10/18/24	USD	461,762	AUD	690,000		(15,391)
Goldman Sachs International	11/04/24	BRL	14,521,357	USD	2,640,909		14,886
JP Morgan Chase Bank N.A.	10/15/24	EUR	547,000	USD	603,215		5,998
JP Morgan Chase Bank N.A.	10/18/24	JPY	40,630,000	USD	284,261		(952)
JP Morgan Chase Bank N.A.	10/18/24	CNH	17,880,000	USD	2,536,076		17,441
JP Morgan Chase Bank N.A.	10/18/24	USD	2,283,865	MXN	42,084,792		151,460
JP Morgan Chase Bank N.A.	10/18/24	USD	235,760	CAD	320,000		(940)
JP Morgan Chase Bank N.A.	10/18/24	USD	281,571	JPY	43,430,000		(21,262)
JP Morgan Chase Bank N.A.	10/18/24	USD	4,204,685	CNH	30,229,745		(112,550)
JP Morgan Chase Bank N.A.	10/31/24	CAD	859,430	USD	622,160		13,757
JP Morgan Chase Bank N.A.	10/31/24	USD	622,180	CAD	859,430		(13,737)
						$	30,519

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/Net Unrealized Appreciation (Depreciation)
Long
U.S. Treasury Long Bond	12/19/24		18	$	2,253,022	$	(17,647)
U.S. Treasury Note 10 Year	12/19/24		211		24,101,426		11,918
U.S. Treasury Ultra Bond	12/19/24		107		14,342,528		(101,497)
UK Long Gilt	12/27/24		15		1,981,842		(7,902)
U.S. Treasury Note 5 Year	12/31/24		99		10,898,023		(19,625)
3 Month SOFR Future	3/17/26		182		43,747,405		387,595
						$	252,842
Short
Japanese 10 Year Bond	12/13/24		3	$	(3,020,265)	$	957
U.S. Treasury Ultra 10 Year	12/19/24		30		(3,547,077)		(1,829)
U.S. Treasury Note 2 Year	12/31/24		28		(5,805,139)		(25,642)
						$	(26,514)

Centrally Cleared Credit Default Swaps - Sell Protection††
Reference Obligation/ Index	Rate Received by Fund	Payment Frequency		Termination Date		Credit Rating	Notional Amount		Value		Upfront Premium Paid/ (Received)		Unrealized Appreciation (Depreciation)
CDX.NA.HY Series 42†	5.000%		Quarterly		6/20/29	BB-*	USD	525,200	$	40,822	$	31,913	$	8,909
CDX.NA.IG Series 43†	1.000%		Quarterly		12/20/29	BBB-*	USD	16,893,000		378,268		380,973		(2,705)
CDX.NA.HY Series 42†	5.000%		Quarterly		12/20/29	BB-*	USD	515,000		37,796		37,452		344
									$	456,886	$	450,338	$	6,548

Centrally Cleared Interest Rate Swaps
Paid by the Fund		Received by the Fund
Rate/ Reference	Frequency	Rate/ Reference		Frequency		Termination Date		Notional Amount		Value		Upfront Premium Paid/ (Received)		Unrealized Appreciation (Depreciation)
12-Month USD SOFR	Annually		Fixed 3.650%		Annually		3/18/30	USD	8,213,000	$	191,149	$	(202,863)	$	394,012
Fixed 4.200%	Annually		12-Month USD SOFR		Annually		4/30/31	USD	17,046,000		(947,014)		(246,252)		(700,762)
Fixed 3.050%	Annually		12-Month USD SOFR		Annually		2/15/48	USD	2,687,000		152,219		48,683		103,536
Fixed 3.510%	Annually		12-Month USD SOFR		Annually		3/18/55	USD	2,075,000		(91,097)		143,831		(234,928)
										$	(694,743)	$	(256,601)	$	(438,142)

MML Dynamic Bond Fund — Portfolio of Investments (Continued)

OTC Interest Rate Swaps

Paid by the Fund

Received by the Fund

Rate/ Reference

Frequency

Rate/ Reference

Frequency

Counterparty

Termination Date

Notional
Amount

Value

Upfront Premium Paid/ (Received)

Unrealized Appreciation (Depreciation)

BRL-CDI

Maturity

Fixed 11.030%

Maturity

Bank of America N.A.

1/02/26

BRL

26,802,000

(56,551)

—

(56,551)

BRL-CDI

Maturity

Fixed 10.230%

Maturity

JP Morgan Chase Bank N.A.

1/02/29

BRL

17,860,000

(204,200)

—

(204,200)

(260,751)

—

(260,751)

OTC Total Return Swaps

Paid by the Fund

Received by the Fund

Rate/
Reference

No. of Contracts/
Notional

Frequency

Rate/ Reference

No. of Contracts/
Notional

Frequency

Counterparty

Termination Date

Value

Upfront Premium Paid/ (Received)

Unrealized
Appreciation
(Depreciation)

1 day USD SOFR + 110BP

USD

1,047,000

Quarterly

JPEIFNTR

7,796

Quarterly

JP Morgan Chase Bank N.A.

11/01/24

43,185

—

43,185

Rating is determined by Western Asset Management Company and represents a weighted average of the ratings of all securities included in the underlying index for the credit default swap. Ratings used in the weighted average are from Moody's Investors Service Inc., S&P Global Ratings, or Fitch Ratings, whichever is the highest for each constituent. All ratings are as of the report date and do not reflect subsequent changes.

†	Payment is based on a percentage of the index. Reference entities are a number of individual issuers comprising the index.

††

For each credit derivative with sold protection, the credit ratings of the entities referenced, as rated by any rating organization, are included in the equivalent S&P Global Ratings or Western Asset Management Company's rating category, as applicable. The reference entity rating represents the likelihood of a potential payment by the Fund if the referenced entity experiences a credit event as of period end. Notional amounts represent the maximum potential amount of future payments (undiscounted) the Fund could be required to make under the credit derivatives with sold protection.

Currency Legend

AUD	Australian Dollar

BRL	Brazilian Real

CAD	Canadian Dollar

CHF	Swiss Franc

CNH	Offshore Chinese Yuan
CNY	Chinese Yuan Renminbi

EUR

Euro

GBP	British Pound

INR	Indian Rupee

JMD	Jamaican Dollar

JPY	Japanese Yen

MXN	Mexican Peso

NOK	Norwegian Krone

USD	U.S. Dollar

UYU	Uruguayan Peso

MML Equity Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 97.7%

COMMON STOCK — 97.7%
Communication Services — 5.9%
AT&T, Inc.		629,100	$	13,840,200
Comcast Corp. Class A		324,300		13,546,011
Fox Corp. Class A		30,800		1,303,764
Interpublic Group of Cos., Inc.		33,000		1,043,790
Match Group, Inc. (a)		10,000		378,400
Omnicom Group, Inc. (b)		19,900		2,057,461
Verizon Communications, Inc.		369,700		16,603,227
Walt Disney Co.		33,900		3,260,841
				52,033,694
Consumer Discretionary — 8.4%
ADT, Inc.		71,000		513,330
AutoNation, Inc. (a)		7,400		1,324,008
AutoZone, Inc. (a)		1,400		4,410,056
Best Buy Co., Inc.		18,900		1,952,370
CarMax, Inc. (a)		13,700		1,060,106
Crocs, Inc. (a)		5,300		767,493
Darden Restaurants, Inc.		9,900		1,624,887
Dick's Sporting Goods, Inc.		2,700		563,490
DR Horton, Inc.		32,700		6,238,179
eBay, Inc.		44,200		2,877,862
Expedia Group, Inc. (a)		11,200		1,657,824
Ford Motor Co.		355,800		3,757,248
General Motors Co.		105,900		4,748,556
Gentex Corp.		19,100		567,079
Genuine Parts Co.		12,300		1,718,064
H&R Block, Inc. (b)		12,300		781,665
Hasbro, Inc.		12,300		889,536
Lennar Corp. Class A		25,100		4,705,748
Lithia Motors, Inc. (b)		1,100		349,404
Lowe's Cos., Inc.		67,400		18,255,290
MGM Resorts International (a)		27,700		1,082,793
Murphy USA, Inc.		1,700		837,879
NVR, Inc. (a)		250		2,452,950
Penske Automotive Group, Inc.		5,900		958,278
PulteGroup, Inc.		24,100		3,459,073
Ralph Lauren Corp.		3,550		688,239
Service Corp. International (b)		15,800		1,247,094
Skechers USA, Inc. Class A (a)		11,700		782,964
Tapestry, Inc.		20,200		948,996
Toll Brothers, Inc.		4,100		633,409
TopBuild Corp. (a)		1,200		488,172
Williams-Sonoma, Inc. (b)		9,800		1,518,216
				73,860,258

MML Equity Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
Consumer Staples — 6.1%
Altria Group, Inc.		151,100	$	7,712,144
BJ's Wholesale Club Holdings, Inc. (a) (b)		5,400		445,392
Bunge Global SA		7,400		715,136
Campbell Soup Co.		26,300		1,286,596
Coca-Cola Consolidated, Inc.		720		947,808
Conagra Brands, Inc.		42,100		1,369,092
Constellation Brands, Inc. Class A		3,400		876,146
General Mills, Inc.		46,800		3,456,180
Hormel Foods Corp.		10,200		323,340
Ingredion, Inc.		5,800		797,094
Kimberly-Clark Corp.		25,500		3,628,140
Kraft Heinz Co.		91,800		3,223,098
Kroger Co.		52,200		2,991,060
Philip Morris International, Inc.		136,700		16,595,380
Sysco Corp.		43,800		3,419,028
Target Corp.		40,700		6,343,502
				54,129,136
Energy — 7.3%
Antero Midstream Corp.		40,000		602,000
Baker Hughes Co.		62,100		2,244,915
Cheniere Energy, Inc.		20,100		3,614,784
Chevron Corp.		130,958		19,286,185
ConocoPhillips		92,900		9,780,512
Devon Energy Corp.		52,400		2,049,888
DT Midstream, Inc. (a)		3,700		291,042
EOG Resources, Inc.		52,900		6,502,997
Kinder Morgan, Inc.		195,300		4,314,177
Marathon Oil Corp.		51,515		1,371,844
Marathon Petroleum Corp.		31,000		5,050,210
Phillips 66		37,300		4,903,085
Valero Energy Corp.		29,100		3,929,373
				63,941,012
Financials — 29.8%
Aflac, Inc.		49,800		5,567,640
Ally Financial, Inc.		20,700		736,713
American Express Co.		54,800		14,861,760
American Financial Group, Inc.		6,400		861,440
American International Group, Inc.		50,200		3,676,146
Ameriprise Financial, Inc.		8,000		3,758,480
Apollo Global Management, Inc.		43,000		5,371,130
Arch Capital Group Ltd. (a)		28,500		3,188,580
Assurant, Inc.		3,800		755,668
Bank of America Corp.		588,700		23,359,616
Bank of New York Mellon Corp.		63,200		4,541,552
Capital One Financial Corp.		26,500		3,967,845
Carlyle Group, Inc.		27,200		1,171,232
Chubb Ltd.		32,000		9,228,480
Cincinnati Financial Corp.		11,900		1,619,828
Citigroup, Inc.		134,200		8,400,920
Citizens Financial Group, Inc.		34,400		1,412,808
Commerce Bancshares, Inc.		9,700		576,180
Corpay, Inc. (a)		5,300		1,657,628
Cullen/Frost Bankers, Inc. (b)		3,700		413,882

MML Equity Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
Discover Financial Services		20,800	$	2,918,032
East West Bancorp, Inc.		10,500		868,770
Equitable Holdings, Inc.		31,600		1,328,148
Everest Group Ltd.		800		313,464
Fidelity National Financial, Inc.		20,600		1,278,436
Fifth Third Bancorp		42,300		1,812,132
First Citizens BancShares, Inc. Class A		1,100		2,025,045
First Horizon Corp.		20,800		323,024
Fiserv, Inc. (a)		38,074		6,839,994
Goldman Sachs Group, Inc.		25,100		12,427,261
Hartford Financial Services Group, Inc.		25,200		2,963,772
Huntington Bancshares, Inc.		109,500		1,609,650
JP Morgan Chase & Co.		203,500		42,910,010
KeyCorp.		41,000		686,750
Loews Corp.		19,400		1,533,570
LPL Financial Holdings, Inc.		5,700		1,325,991
M&T Bank Corp.		10,500		1,870,260
Markel Group, Inc. (a)		940		1,474,465
MetLife, Inc.		64,400		5,311,712
Morgan Stanley		126,500		13,186,360
Northern Trust Corp.		15,400		1,386,462
Old Republic International Corp.		22,400		793,408
PayPal Holdings, Inc. (a)		79,000		6,164,370
PNC Financial Services Group, Inc.		30,000		5,545,500
Primerica, Inc.		2,600		689,390
Principal Financial Group, Inc.		19,900		1,709,410
Progressive Corp.		19,200		4,872,192
Prudential Financial, Inc.		28,500		3,451,350
Raymond James Financial, Inc.		15,600		1,910,376
Regions Financial Corp.		69,200		1,614,436
Reinsurance Group of America, Inc.		4,597		1,001,548
Robinhood Markets, Inc. Class A (a)		29,600		693,232
SEI Investments Co.		9,900		684,981
State Street Corp.		25,600		2,264,832
Stifel Financial Corp.		7,800		732,420
Synchrony Financial		32,400		1,616,112
T. Rowe Price Group, Inc.		16,900		1,840,917
Travelers Cos., Inc.		32,200		7,538,664
Unum Group		15,000		891,600
W. R. Berkley Corp.		29,850		1,693,391
Webster Financial Corp.		13,000		605,930
Wells Fargo & Co.		263,300		14,873,817
Willis Towers Watson PLC		7,800		2,297,334
				263,006,046
Health Care — 16.3%
AbbVie, Inc.		155,300		30,668,644
Bio-Rad Laboratories, Inc. Class A (a)		2,100		702,618
Cardinal Health, Inc.		21,408		2,366,012
Cencora, Inc.		19,000		4,276,520
Centene Corp. (a)		40,300		3,033,784
Cigna Group		24,900		8,626,356
DaVita, Inc. (a) (b)		7,400		1,213,082
Elevance Health, Inc.		22,370		11,632,400
Gilead Sciences, Inc.		23,300		1,953,472
HCA Healthcare, Inc.		30,000		12,192,900
Henry Schein, Inc. (a) (b)		11,300		823,770
Johnson & Johnson		149,400		24,211,764

MML Equity Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
Labcorp Holdings, Inc.		8,800	$	1,966,624
McKesson Corp.		15,010		7,421,244
Medtronic PLC		112,800		10,155,384
Merck & Co., Inc.		98,500		11,185,660
Molina Healthcare, Inc. (a)		2,700		930,312
Quest Diagnostics, Inc.		12,700		1,971,675
Teleflex, Inc.		4,100		1,014,012
Tenet Healthcare Corp. (a)		7,500		1,246,500
United Therapeutics Corp. (a)		3,900		1,397,565
Universal Health Services, Inc. Class B		6,900		1,580,169
Viatris, Inc.		104,700		1,215,567
Zimmer Biomet Holdings, Inc.		18,100		1,953,895
				143,739,929
Industrials — 12.4%
Acuity Brands, Inc.		2,700		743,553
Allegion PLC		7,300		1,063,902
Allison Transmission Holdings, Inc.		7,700		739,739
Builders FirstSource, Inc. (a)		10,900		2,113,074
CACI International, Inc. Class A (a)		1,200		605,472
Caterpillar, Inc.		43,000		16,818,160
CSX Corp.		172,000		5,939,160
Cummins, Inc.		12,100		3,917,859
Deere & Co.		20,400		8,513,532
Delta Air Lines, Inc.		56,800		2,884,872
Dover Corp.		9,400		1,802,356
FedEx Corp.		21,500		5,884,120
Fortune Brands Innovations, Inc.		10,400		931,112
Huntington Ingalls Industries, Inc.		3,400		898,892
Johnson Controls International PLC		47,600		3,694,236
L3Harris Technologies, Inc.		15,700		3,734,559
Leidos Holdings, Inc.		11,949		1,947,687
Lockheed Martin Corp.		19,900		11,632,744
Masco Corp.		23,500		1,972,590
Middleby Corp. (a)		3,900		542,607
Oshkosh Corp.		5,800		581,218
Owens Corning		9,500		1,676,940
PACCAR, Inc.		46,113		4,550,431
RTX Corp.		108,700		13,170,092
Science Applications International Corp.		2,900		403,883
Snap-on, Inc.		4,600		1,332,666
Textron, Inc.		20,600		1,824,748
U-Haul Holding Co. (UHAL US) (a) (b)		1,300		100,724
U-Haul Holding Co. (UHAL/B US)		17,400		1,252,800
UFP Industries, Inc.		5,400		708,534
United Airlines Holdings, Inc. (a)		28,900		1,649,034
United Rentals, Inc.		5,530		4,477,807
WESCO International, Inc.		4,400		739,112
				108,848,215
Information Technology — 4.4%
Amkor Technology, Inc.		18,600		569,160
Arrow Electronics, Inc. (a)		6,900		916,527
Cisco Systems, Inc.		156,600		8,334,252
Cognizant Technology Solutions Corp. Class A		43,700		3,372,766
F5, Inc. (a)		5,200		1,145,040
Gen Digital, Inc.		55,100		1,511,393

MML Equity Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
Hewlett Packard Enterprise Co.		117,500	$	2,404,050
HP, Inc.		117,300		4,207,551
International Business Machines Corp.		60,300		13,331,124
ON Semiconductor Corp. (a)		16,700		1,212,587
Skyworks Solutions, Inc.		12,300		1,214,871
TD SYNNEX Corp.		7,600		912,608
				39,131,929
Materials — 2.9%
Amcor PLC		127,100		1,440,043
Berry Global Group, Inc.		8,800		598,224
Celanese Corp.		8,200		1,114,872
CF Industries Holdings, Inc.		13,800		1,184,040
Commercial Metals Co.		3,600		197,856
Crown Holdings, Inc.		12,700		1,217,676
Dow, Inc.		61,800		3,376,134
Eagle Materials, Inc. (b)		2,900		834,185
Eastman Chemical Co.		10,300		1,153,085
Graphic Packaging Holding Co. (b)		27,100		801,889
International Paper Co. (b)		24,400		1,191,940
LyondellBasell Industries NV Class A		28,608		2,743,507
Nucor Corp.		27,700		4,164,418
PPG Industries, Inc.		8,000		1,059,680
Reliance, Inc.		5,400		1,561,734
Steel Dynamics, Inc.		19,500		2,458,560
				25,097,843
Utilities — 4.2%
Consolidated Edison, Inc.		30,400		3,165,552
Dominion Energy, Inc.		73,700		4,259,123
Duke Energy Corp.		67,900		7,828,870
Edison International		25,100		2,185,959
Evergy, Inc.		20,200		1,252,602
NRG Energy, Inc.		18,300		1,667,130
OGE Energy Corp.		17,661		724,454
Pinnacle West Capital Corp.		9,998		885,723
PPL Corp.		64,900		2,146,892
Public Service Enterprise Group, Inc.		47,300		4,219,633
Sempra		46,500		3,888,795
Southern Co.		42,700		3,850,686
WEC Energy Group, Inc.		12,300		1,183,014
				37,258,433

TOTAL COMMON STOCK (Cost $648,592,957)				861,046,495

TOTAL EQUITIES (Cost $648,592,957)				861,046,495

EXCHANGE-TRADED FUNDS — 1.8%
iShares Russell 1000 Value ETF (b)		86,500		16,417,700

TOTAL EXCHANGE-TRADED FUNDS (Cost $16,291,053)				16,417,700

TOTAL LONG-TERM INVESTMENTS (Cost $664,884,010)				877,464,195

MML Equity Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
SHORT-TERM INVESTMENTS — 0.4%
Repurchase Agreement — 0.4%
Fixed Income Clearing Corp., Repurchase Agreement, dated 9/30/24, 1.520%, due 10/01/24 (c)	$	3,305,298	$	3,305,298

TOTAL SHORT-TERM INVESTMENTS (Cost $3,305,298)				3,305,298

TOTAL INVESTMENTS — 99.9% (Cost $668,189,308) (d)				880,769,493

Other Assets/(Liabilities) — 0.1%				733,852

NET ASSETS — 100.0%			$	881,503,345

Abbreviation Legend

ETF	Exchange-Traded Fund

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)	Non-income producing security.

(b)

Denotes all or a portion of security on loan. The total value of securities on loan as of September 30, 2024, was $12,685,856 or 1.44% of net assets. The Fund received $12,909,602 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(c)	Maturity value of $3,305,437. Collateralized by U.S. Government Agency obligations with a rate of 4.875%, maturity date of 5/31/26, and an aggregate market value, including accrued interest, of $3,371,608.

(d)	See Note 3 for aggregate cost for federal tax purposes.

MML Equity Rotation Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 100.0%

COMMON STOCK — 100.0%
Communication Services — 10.9%
Alphabet, Inc. Class A		7,749	$	1,285,172
Alphabet, Inc. Class C		6,885		1,151,103
AT&T, Inc.		2,972		65,384
Comcast Corp. Class A		1,085		45,321
Electronic Arts, Inc.		180		25,819
ESC GCI Liberty, Inc. (a) (b) (c)		2,102		—
Meta Platforms, Inc. Class A		4,970		2,845,027
Netflix, Inc. (c)		272		192,921
New York Times Co. Class A		333		18,538
Spotify Technology SA (c)		76		28,008
T-Mobile US, Inc.		809		166,945
Verizon Communications, Inc.		3,689		165,673
Walt Disney Co.		288		27,703
				6,017,614
Consumer Discretionary — 10.6%
Amazon.com, Inc. (c)		13,988		2,606,384
AutoZone, Inc. (c)		24		75,601
Booking Holdings, Inc.		155		652,879
Chipotle Mexican Grill, Inc. (c)		5,217		300,604
Deckers Outdoor Corp. (c)		126		20,091
Domino's Pizza, Inc.		68		29,250
DR Horton, Inc.		455		86,800
eBay, Inc.		390		25,393
Garmin Ltd.		903		158,955
Gentex Corp.		870		25,830
Grand Canyon Education, Inc. (c)		131		18,582
H&R Block, Inc.		579		36,796
Hilton Worldwide Holdings, Inc.		486		112,023
Home Depot, Inc.		1,784		722,877
Lennar Corp. Class A		340		63,743
Lowe's Cos., Inc.		167		45,232
Marriott International, Inc. Class A		202		50,217
McDonald's Corp.		152		46,286
NIKE, Inc. Class B		258		22,807
NVR, Inc. (c)		7		68,683
O'Reilly Automotive, Inc. (c)		84		96,734
PulteGroup, Inc.		380		54,541
Ross Stores, Inc.		336		50,571
Texas Roadhouse, Inc.		127		22,428
TJX Cos., Inc.		3,269		384,238
Tractor Supply Co.		384		111,717
Williams-Sonoma, Inc.		96		14,872
				5,904,134

MML Equity Rotation Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
Consumer Staples — 10.9%
Altria Group, Inc.		3,194	$	163,022
Archer-Daniels-Midland Co.		443		26,465
BellRing Brands, Inc. (c)		601		36,493
BJ's Wholesale Club Holdings, Inc. (c)		193		15,919
Casey's General Stores, Inc.		262		98,436
Church & Dwight Co., Inc.		360		37,699
Coca-Cola Co.		1,942		139,552
Colgate-Palmolive Co.		2,963		307,589
Costco Wholesale Corp.		3,083		2,733,141
Dollar Tree, Inc. (c)		187		13,150
Kimberly-Clark Corp.		185		26,322
Kroger Co.		601		34,437
Mondelez International, Inc. Class A		345		25,416
PepsiCo, Inc.		517		87,916
Philip Morris International, Inc.		1,632		198,125
Procter & Gamble Co.		4,053		701,979
Walmart, Inc.		17,646		1,424,914
				6,070,575
Energy — 1.0%
Chevron Corp.		535		78,789
ConocoPhillips		228		24,004
Exxon Mobil Corp.		3,675		430,784
Williams Cos., Inc.		397		18,123
				551,700
Financials — 15.0%
Aflac, Inc.		270		30,186
American Express Co.		521		141,295
Aon PLC Class A		48		16,608
Arch Capital Group Ltd. (c)		1,629		182,252
Berkshire Hathaway, Inc. Class B (c)		6,395		2,943,363
BlackRock, Inc.		79		75,011
Blackstone, Inc.		283		43,336
Brown & Brown, Inc.		621		64,336
Cboe Global Markets, Inc.		628		128,658
Chubb Ltd.		472		136,120
Cincinnati Financial Corp.		162		22,051
Corpay, Inc. (c)		59		18,453
Evercore, Inc. Class A		85		21,534
Everest Group Ltd.		43		16,849
FactSet Research Systems, Inc.		82		37,708
Fidelity National Information Services, Inc.		324		27,135
Fiserv, Inc. (c)		634		113,898
Houlihan Lokey, Inc.		355		56,097
JP Morgan Chase & Co.		404		85,187
Kinsale Capital Group, Inc.		68		31,659
LPL Financial Holdings, Inc.		118		27,450
Markel Group, Inc. (c)		12		18,823
Marsh & McLennan Cos., Inc.		1,413		315,226
Mastercard, Inc. Class A		2,612		1,289,806
Moody's Corp.		500		237,295
MSCI, Inc.		67		39,056
PayPal Holdings, Inc. (c)		329		25,672
Progressive Corp.		1,649		418,450

MML Equity Rotation Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
S&P Global, Inc.		138	$	71,294
SEI Investments Co.		228		15,775
T. Rowe Price Group, Inc.		133		14,488
Tradeweb Markets, Inc. Class A		342		42,295
Visa, Inc. Class A		5,961		1,638,977
				8,346,343
Health Care — 11.2%
Abbott Laboratories		414		47,200
AbbVie, Inc.		4,257		840,672
Agilent Technologies, Inc.		677		100,521
Amgen, Inc.		496		159,816
Boston Scientific Corp. (c)		1,324		110,951
Cardinal Health, Inc.		578		63,881
Cencora, Inc.		330		74,277
Centene Corp. (c)		634		47,728
Cigna Group		248		85,917
CVS Health Corp.		372		23,391
Danaher Corp.		315		87,576
Elevance Health, Inc.		343		178,360
Eli Lilly & Co.		1,595		1,413,074
GE HealthCare Technologies, Inc. (c)		408		38,291
Humana, Inc.		126		39,909
IDEXX Laboratories, Inc. (c)		42		21,219
Intuitive Surgical, Inc. (c)		404		198,473
Johnson & Johnson		1,106		179,238
McKesson Corp.		859		424,707
Medpace Holdings, Inc. (c)		39		13,018
Medtronic PLC		227		20,437
Merck & Co., Inc.		3,927		445,950
Mettler-Toledo International, Inc. (c)		12		17,996
Neurocrine Biosciences, Inc. (c)		192		22,122
Regeneron Pharmaceuticals, Inc. (c)		353		371,088
Stryker Corp.		218		78,755
Thermo Fisher Scientific, Inc.		109		67,424
United Therapeutics Corp. (c)		74		26,518
UnitedHealth Group, Inc.		1,071		626,192
Vertex Pharmaceuticals, Inc. (c)		686		319,045
West Pharmaceutical Services, Inc.		85		25,514
Zoetis, Inc.		96		18,757
				6,188,017
Industrials — 11.2%
3M Co.		661		90,359
A.O. Smith Corp.		317		28,476
AAON, Inc.		300		32,352
Acuity Brands, Inc.		88		24,234
Allison Transmission Holdings, Inc.		292		28,052
Amentum Holdings, Inc. (c)		181		5,837
AMETEK, Inc.		114		19,575
Ardagh Group SA (a) (b) (c) (d)		463		1,953
Armstrong World Industries, Inc.		131		17,217
Automatic Data Processing, Inc.		481		133,107
Booz Allen Hamilton Holding Corp.		251		40,853
Broadridge Financial Solutions, Inc.		366		78,701
Carlisle Cos., Inc.		140		62,965
Carrier Global Corp.		1,383		111,318

MML Equity Rotation Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
Caterpillar, Inc.		1,419	$	554,999
Cintas Corp.		1,312		270,115
Comfort Systems USA, Inc.		96		37,474
Copart, Inc. (c)		1,489		78,024
Core & Main, Inc. Class A (c)		1,088		48,307
Crane Co.		269		42,577
CSX Corp.		475		16,402
Cummins, Inc.		447		144,734
Curtiss-Wright Corp.		115		37,799
Deere & Co.		70		29,213
Donaldson Co., Inc.		223		16,435
Dover Corp.		108		20,708
Eaton Corp. PLC		1,313		435,181
EMCOR Group, Inc.		247		106,341
Fastenal Co.		1,530		109,273
FedEx Corp.		93		25,452
Ferguson Enterprises, Inc.		1,559		309,571
GE Vernova, Inc. (c)		246		62,725
General Dynamics Corp.		702		212,144
General Electric Co.		2,147		404,881
Honeywell International, Inc.		209		43,202
Howmet Aerospace, Inc.		360		36,090
Illinois Tool Works, Inc.		236		61,848
Ingersoll Rand, Inc.		958		94,037
ITT, Inc.		409		61,150
Jacobs Solutions, Inc.		181		23,693
Johnson Controls International PLC		378		29,337
Leidos Holdings, Inc.		246		40,098
Lennox International, Inc.		96		58,012
Lincoln Electric Holdings, Inc.		86		16,514
Lockheed Martin Corp.		115		67,224
Masco Corp.		312		26,189
Old Dominion Freight Line, Inc.		466		92,566
Otis Worldwide Corp.		390		40,537
Owens Corning		183		32,303
PACCAR, Inc.		1,827		180,288
Paychex, Inc.		1,046		140,363
Pentair PLC		193		18,873
Quanta Services, Inc.		217		64,699
Republic Services, Inc.		547		109,859
Rockwell Automation, Inc.		85		22,819
Rollins, Inc.		1,327		67,120
RTX Corp.		793		96,080
Simpson Manufacturing Co., Inc.		142		27,160
Snap-on, Inc.		123		35,634
Trane Technologies PLC		1,049		407,778
Union Pacific Corp.		245		60,388
United Rentals, Inc.		42		34,009
Verisk Analytics, Inc.		257		68,866
W.W. Grainger, Inc.		197		204,646
Waste Management, Inc.		930		193,068
Watsco, Inc.		102		50,172
Westinghouse Air Brake Technologies Corp.		305		55,440
				6,197,416
Information Technology — 26.4%
Accenture PLC Class A		516		182,396
Adobe, Inc. (c)		711		368,142

MML Equity Rotation Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
Advanced Micro Devices, Inc. (c)		186	$	30,519
Amphenol Corp. Class A		2,553		166,353
Analog Devices, Inc.		430		98,973
Apple, Inc.		9,139		2,129,387
Applied Materials, Inc.		1,978		399,655
Arista Networks, Inc. (c)		884		339,297
Broadcom, Inc.		11,675		2,013,938
Cadence Design Systems, Inc. (c)		504		136,599
Cisco Systems, Inc.		2,604		138,585
Cognizant Technology Solutions Corp. Class A		257		19,835
Fair Isaac Corp. (c)		54		104,950
Fortinet, Inc. (c)		953		73,905
Gartner, Inc. (c)		70		35,473
GoDaddy, Inc. Class A (c)		166		26,025
International Business Machines Corp.		632		139,723
Intuit, Inc.		1,044		648,324
Keysight Technologies, Inc. (c)		271		43,070
KLA Corp.		379		293,501
Lam Research Corp.		269		219,526
Microsoft Corp.		5,927		2,550,388
Monolithic Power Systems, Inc.		34		31,433
Motorola Solutions, Inc.		638		286,864
NetApp, Inc.		313		38,659
NVIDIA Corp.		20,878		2,535,424
Palo Alto Networks, Inc. (c)		149		50,928
QUALCOMM, Inc.		3,042		517,292
Salesforce, Inc.		1,736		475,161
ServiceNow, Inc. (c)		237		211,970
Synopsys, Inc. (c)		457		231,420
Texas Instruments, Inc.		396		81,802
				14,619,517
Materials — 2.0%
Air Products & Chemicals, Inc.		71		21,140
AptarGroup, Inc.		121		19,383
CRH PLC		1,795		166,468
DuPont de Nemours, Inc.		380		33,862
Eagle Materials, Inc.		108		31,066
Ecolab, Inc.		268		68,429
International Flavors & Fragrances, Inc.		294		30,849
Linde PLC (LIN US)		729		347,631
Martin Marietta Materials, Inc.		102		54,902
NewMarket Corp.		33		18,212
Nucor Corp.		144		21,649
Packaging Corp. of America		146		31,448
RPM International, Inc.		182		22,022
Sherwin-Williams Co.		467		178,240
Southern Copper Corp.		333		38,518
Vulcan Materials Co.		135		33,808
				1,117,627
Real Estate — 0.1%
Public Storage		138		50,214
Utilities — 0.7%
American Electric Power Co., Inc.		237		24,316
Duke Energy Corp.		569		65,606

MML Equity Rotation Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
NextEra Energy, Inc.		930	$	78,613
NRG Energy, Inc.		358		32,614
Public Service Enterprise Group, Inc.		548		48,887
Sempra		202		16,893
Southern Co.		514		46,353
Vistra Corp.		835		98,981
				412,263

TOTAL COMMON STOCK (Cost $53,796,840)				55,475,420

TOTAL EQUITIES (Cost $53,796,840)				55,475,420

TOTAL LONG-TERM INVESTMENTS (Cost $53,796,840)				55,475,420

SHORT-TERM INVESTMENTS — 0.0%
Investment of Cash Collateral from Securities Loaned — 0.0%
State Street Navigator Securities Lending Government Money Market Portfolio (e)		11,565		11,565

TOTAL SHORT-TERM INVESTMENTS (Cost $11,565)				11,565

TOTAL INVESTMENTS — 100.0% (Cost $53,808,405) (f)				55,486,985

Other Assets/(Liabilities) — (0.0)%				(430)

NET ASSETS — 100.0%			$	55,486,555

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)	Investment is valued using significant unobservable inputs.

(b)	This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At September 30, 2024, these securities amounted to a value of $1,953 or 0.00% of net assets.

(c)	Non-income producing security.

(d)	Denotes all or a portion of security on loan. The total value of securities on loan as of September 30, 2024, was $11,336 or 0.02% of net assets. (Note 2).

(e)	Represents investment of security lending cash collateral. (Note 2).

(f)	See Note 3 for aggregate cost for federal tax purposes.

MML High Yield Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 97.9%

BANK LOANS — 10.1%
Advertising — 0.2%
Neptune Bidco US, Inc., 2022 USD Term Loan B, 3 mo. USD Term SOFR + 5.000%
10.404% VRN 4/11/29	$	135,000	$	126,467
Chemicals — 2.9%
CPC Acquisition Corp., Term Loan, 3 mo. USD Term SOFR + 3.750%
8.615% VRN 12/29/27		548,834		476,459
LSF11 A5 Holdco LLC, 2024 Term Loan B, 1 mo. USD Term SOFR + 3.500%
8.460% VRN 10/15/28		396,152		395,090
PMHC II, Inc., 2022 Term Loan B, 3 mo. USD Term SOFR + 4.250%
9.704% VRN 4/23/29 (a)		390,725		380,918
Polar US Borrower LLC, 2024 Term Loan B1B, 3 mo. U.S. (Fed) Prime Rate + 4.500%
13.000% VRN 10/16/28 (a)		268,913		196,306
				1,448,773
Computers — 0.7%
McAfee LLC, 2024 USD Term Loan B, 1 mo. USD Term SOFR + 3.250%
8.451% VRN 3/01/29		122,761		122,186
Vision Solutions, Inc., 2021 Incremental Term Loan, 3 mo. USD Term SOFR + 4.000%
9.514% VRN 4/24/28		259,551		252,252
				374,438
Diversified Financial Services — 0.3%
Aretec Group, Inc., 2024 Term Loan B,
0.000% 8/09/30 (a)		137,310		134,354
Health Care - Services — 0.8%
LifePoint Health, Inc., 2024 Term Loan B, 3 mo. USD Term SOFR + 4.750%
10.054% VRN 11/16/28		113,383		113,156
Radiology Partners, Inc., 2024 Extended Term Loan B, 3 mo. USD Term SOFR + 3.500%
8.883% - 8.883% VRN 1/31/29 (a)		272,773		266,466
				379,622
Media — 0.8%
A-L Parent LLC, 2023 Take Back Term Loan, 1 mo. USD Term SOFR + 5.500%
10.345% VRN 6/30/28		305,168		304,024

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Sinclair Television Group, Inc., Term Loan B2B, 3 mo. USD Term SOFR + 2.500%
8.014% VRN 9/30/26	$	82,412	$	79,527
				383,551
Packaging & Containers — 0.3%
Five Star Intermediate Holding LLC, Term Loan, 3 mo. USD Term SOFR + 4.250%
9.189% VRN 5/05/29 (a)		135,000		131,422
Pharmaceuticals — 0.2%
Grifols Worldwide Operations USA, Inc., 2019 USD Term Loan B, 3 mo. USD Term SOFR + 2.000%
7.402% VRN 11/15/27		82,119		79,694
Pipelines — 0.3%
ITT Holdings LLC, 2024 Term Loan B, 1 mo. USD Term SOFR + 3.000%
7.945% VRN 10/11/30		147,825		147,948
Software — 3.4%
Banff Merger Sub, Inc.
2024 Term Loan B, 3 mo. USD Term SOFR + 3.750%
9.005% VRN 7/30/31 (a)		921,201		918,742
2024 2nd Lien Term Loan, 3 mo. USD Term SOFR + 5.750%
11.005% VRN 7/30/32 (a)		206,094		202,745
Cloud Software Group, Inc., 2024 USD Term Loan B, 3 mo. USD Term SOFR + 4.000%
8.604% VRN 3/30/29		254,363		253,116
Renaissance Holding Corp., 2024 Term Loan, 1 mo. USD Term SOFR + 4.250%
9.095% VRN 4/05/30		242,655		242,407
Veritas US, Inc., 2021 USD Term Loan B (Acquired 1/04/24, Cost $50,343), 1 mo. USD Term SOFR + 5.000%
9.960% VRN 9/01/25 (b)		55,914		52,261
				1,669,271
Telecommunications — 0.2%
Coral-US Co-Borrower LLC, 2020 Term Loan B2,
0.000% 1/31/28 (a)		130,411		128,763

TOTAL BANK LOANS (Cost $4,984,683)				5,004,303

CORPORATE DEBT — 87.8%
Advertising — 0.8%
Clear Channel Outdoor Holdings, Inc.
9.000% 9/15/28 (c)		92,000		97,807
7.500% 6/01/29 (c)		61,000		52,537
7.875% 4/01/30 (c)		100,000		104,569
Stagwell Global LLC
5.625% 8/15/29 (c)		133,000		128,587
				383,500
Aerospace & Defense — 1.3%
Boeing Co.
6.388% 5/01/31 (c)		48,000		51,040
6.528% 5/01/34 (c)		126,000		135,231

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Spirit AeroSystems, Inc.
9.750% 11/15/30 (c)	$	278,000	$	309,970
Triumph Group, Inc.
9.000% 3/15/28 (c)		132,000		138,180
				634,421
Airlines — 1.2%
American Airlines, Inc.
8.500% 5/15/29 (c)		195,000		206,898
Hawaiian Brand Intellectual Property Ltd./HawaiianMiles Loyalty Ltd.
11.000% 4/15/29 (c) (d)		133,367		133,900
United Airlines, Inc.
4.375% 4/15/26 (c)		259,000		254,843
				595,641
Auto Manufacturers — 0.4%
JB Poindexter & Co., Inc.
8.750% 12/15/31 (c)		172,000		181,849
Auto Parts & Equipment — 0.6%
Adient Global Holdings Ltd.
4.875% 8/15/26 (c)		277,000		274,439
Building Materials — 2.1%
EMRLD Borrower LP/Emerald Co-Issuer, Inc.
6.625% 12/15/30 (c)		326,000		336,137
Knife River Corp.
7.750% 5/01/31 (c)		152,000		161,610
New Enterprise Stone & Lime Co., Inc.
9.750% 7/15/28 (c)		240,000		245,161
Smyrna Ready Mix Concrete LLC
8.875% 11/15/31 (c)		171,000		184,457
Wilsonart LLC
11.000% 8/15/32 (c)		114,000		114,034
				1,041,399
Chemicals — 4.4%
Consolidated Energy Finance SA
5.625% 10/15/28 (c)		595,000		502,948
LSF11 A5 HoldCo LLC
6.625% 10/15/29 (c)		294,000		285,956
Methanex Corp.
5.125% 10/15/27		144,000		142,489
Olympus Water US Holding Corp.
4.250% 10/01/28 (c)		326,000		311,295
6.250% 10/01/29 (c) (d)		459,000		444,135
Vibrantz Technologies, Inc.
9.000% 2/15/30 (c)		532,000		496,989
				2,183,812
Coal — 0.6%
Coronado Finance Pty. Ltd.
10.750% 5/15/26 (c)		290,000		301,679

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Commercial Services — 1.4%
Alta Equipment Group, Inc.
9.000% 6/01/29 (c)	$	126,000	$	112,829
Prime Security Services Borrower LLC/Prime Finance, Inc.
6.250% 1/15/28 (c)		133,000		133,036
PROG Holdings, Inc.
6.000% 11/15/29 (c)		425,700		419,952
Service Corp. International
4.000% 5/15/31		44,000		40,715
Vortex Opco LLC
8.000% 4/30/30 (c)		14,334		5,734
				712,266
Cosmetics & Personal Care — 0.7%
Coty, Inc./HFC Prestige Products, Inc./HFC Prestige International US LLC
6.625% 7/15/30 (c)		53,000		55,069
Perrigo Finance Unlimited Co.
4.900% STEP 6/15/30		280,000		272,701
				327,770
Distribution & Wholesale — 1.0%
Resideo Funding, Inc.
4.000% 9/01/29 (c)		243,000		228,894
6.500% 7/15/32 (c)		254,000		260,734
				489,628
Diversified Financial Services — 5.1%
Aretec Group, Inc.
10.000% 8/15/30 (c)		144,000		153,247
Coinbase Global, Inc.
3.375% 10/01/28 (c)		38,000		34,142
3.625% 10/01/31 (c)		50,000		42,365
GGAM Finance Ltd.
6.875% 4/15/29 (c)		73,000		75,941
8.000% 2/15/27 (c)		248,000		259,163
Jefferson Capital Holdings LLC
6.000% 8/15/26 (c)		380,000		380,042
9.500% 2/15/29 (c)		339,000		361,947
Macquarie Airfinance Holdings Ltd.
8.125% 3/30/29 (c)		119,000		126,033
8.375% 5/01/28 (c)		106,000		111,438
Midcap Financial Issuer Trust
5.625% 1/15/30 (c)		339,000		312,317
PRA Group, Inc.
5.000% 10/01/29 (c)		583,000		536,336
8.875% 1/31/30 (c)		146,000		152,068
				2,545,039
Electric — 3.1%
Lightning Power LLC
7.250% 8/15/32 (c)		158,000		166,143
Pike Corp.
5.500% 9/01/28 (c)		593,000		580,777
8.625% 1/31/31 (c)		140,000		149,690

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Talen Energy Supply LLC
8.625% 6/01/30 (c)	$	592,000	$	645,175
				1,541,785
Electrical Components & Equipment — 0.3%
Energizer Holdings, Inc.
4.375% 3/31/29 (c)		142,000		134,474
Electronics — 0.8%
Atkore, Inc.
4.250% 6/01/31 (c)		460,000		420,521
Engineering & Construction — 1.7%
Arcosa, Inc.
4.375% 4/15/29 (c)		273,000		261,684
6.875% 8/15/32 (c)		97,000		101,514
Global Infrastructure Solutions, Inc.
5.625% 6/01/29 (c)		218,000		213,898
7.500% 4/15/32 (c)		140,000		144,061
Railworks Holdings LP/Railworks Rally, Inc.
8.250% 11/15/28 (c)		117,000		121,022
				842,179
Entertainment — 1.0%
Live Nation Entertainment, Inc.
4.750% 10/15/27 (c)		260,000		256,324
Midwest Gaming Borrower LLC/Midwest Gaming Finance Corp.
4.875% 5/01/29 (c)		136,000		130,447
Ontario Gaming GTA LP/OTG Co-Issuer, Inc.
8.000% 8/01/30 (c)		88,000		91,452
				478,223
Environmental Controls — 0.2%
Enviri Corp.
5.750% 7/31/27 (c)		116,000		113,861
Food — 1.9%
Albertsons Cos., Inc./Safeway, Inc./New Albertsons LP/Albertsons LLC
4.875% 2/15/30 (c)		127,000		124,951
JBS USA Holding Lux SARL/JBS USA Food Co./JBS Lux Co. SARL
3.625% 1/15/32		527,000		481,809
Pilgrim's Pride Corp.
4.250% 4/15/31 (c)		283,000		268,935
US Foods, Inc.
5.750% 4/15/33 (c) (e)		73,000		73,078
				948,773
Hand & Machine Tools — 1.6%
Regal Rexnord Corp.
6.400% 4/15/33		741,800		793,365
Health Care - Products — 0.1%
Medline Borrower LP/Medline Co-Issuer, Inc.
6.250% 4/01/29 (c)		43,000		44,304

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Health Care - Services — 6.0%
Centene Corp.
3.375% 2/15/30	$	314,000	$	289,356
CHS/Community Health Systems, Inc.
4.750% 2/15/31 (c)		108,000		94,937
5.250% 5/15/30 (c)		422,000		388,369
6.000% 1/15/29 (c)		141,000		136,881
HCA, Inc.
5.450% 9/15/34		81,000		83,344
LifePoint Health, Inc.
9.875% 8/15/30 (c)		274,000		301,675
10.000% 6/01/32 (c)		174,000		191,290
11.000% 10/15/30 (c)		129,000		145,562
Molina Healthcare, Inc.
4.375% 6/15/28 (c)		182,000		176,936
Radiology Partners, Inc.
7.775% 1/31/29 (c)		149,531		148,410
9.781% 2/15/30 (c)		537,833		508,252
Tenet Healthcare Corp.
4.375% 1/15/30		165,000		158,306
5.125% 11/01/27		179,000		178,323
6.125% 10/01/28 (d)		152,000		153,214
				2,954,855
Home Builders — 1.9%
Ashton Woods USA LLC/Ashton Woods Finance Co.
4.625% 8/01/29 (c)		183,000		175,669
Mattamy Group Corp.
4.625% 3/01/30 (c)		687,000		657,736
The New Home Co., Inc.
9.250% 10/01/29 (c)		95,000		100,096
				933,501
Housewares — 0.2%
Newell Brands, Inc.
6.375% 9/15/27 (d)		36,000		36,411
6.875% STEP 4/01/36		56,000		53,364
				89,775
Insurance — 0.9%
Highlands Holdings Bond Issuer Ltd./Highlands Holdings Bond Co-Issuer, Inc.
7.625% 10/15/25 (c)		430,269		429,450
Internet — 0.2%
Getty Images, Inc.
9.750% 3/01/27 (c)		64,000		63,975
Wayfair LLC
7.250% 10/31/29 (c) (e)		55,000		56,345
				120,320
Investment Companies — 2.0%
HA Sustainable Infrastructure Capital, Inc.
6.375% 7/01/34 (c)		261,000		267,168

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Icahn Enterprises LP/Icahn Enterprises Finance Corp.
6.250% 5/15/26	$	735,000	$	729,267
				996,435
Leisure Time — 1.9%
NCL Corp. Ltd.
5.875% 3/15/26 (c)		118,000		118,007
5.875% 2/15/27 (c)		49,000		49,173
8.375% 2/01/28 (c)		100,000		105,015
7.750% 2/15/29 (c) (d)		71,000		76,084
NCL Finance Ltd.
6.125% 3/15/28 (c)		94,000		95,880
Sabre GLBL, Inc.
Convertible, 7.320% 8/01/26		60,000		66,930
8.625% 6/01/27 (c) (d)		358,000		352,137
11.250% 12/15/27 (c)		91,000		94,427
				957,653
Lodging — 1.5%
Hilton Grand Vacations Borrower Escrow LLC/Hilton Grand Vacations Borrower Escrow, Inc.
6.625% 1/15/32 (c)		166,000		168,034
MGM Resorts International
6.500% 4/15/32		76,500		77,956
Sugarhouse HSP Gaming Prop Mezz LP/Sugarhouse HSP Gaming Finance Corp.
5.875% 5/15/25 (c)		155,000		154,482
Travel & Leisure Co.
6.625% 7/31/26 (c)		213,000		217,023
Wyndham Hotels & Resorts, Inc.
4.375% 8/15/28 (c)		133,000		128,294
				745,789
Machinery - Construction & Mining — 0.2%
Terex Corp.
6.250% 10/15/32 (c) (e)		107,000		107,000
Media — 5.2%
CCO Holdings LLC/CCO Holdings Capital Corp.
4.250% 2/01/31 (c)		196,000		172,819
4.250% 1/15/34 (c)		381,000		312,519
4.500% 5/01/32		95,000		82,142
CSC Holdings LLC
5.750% 1/15/30 (c)		146,000		75,575
7.500% 4/01/28 (c)		75,000		50,134
11.750% 1/31/29 (c)		232,000		224,249
Cumulus Media New Holdings, Inc.
8.000% 7/01/29 (c)		120,000		47,737
Directv Financing LLC/Directv Financing Co-Obligor, Inc.
5.875% 8/15/27 (c)		434,000		426,115
DISH DBS Corp.
5.125% 6/01/29		105,000		70,447
7.375% 7/01/28		78,000		58,457
DISH Network Corp.
11.750% 11/15/27 (c)		112,000		117,548
Gray Television, Inc.

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
5.375% 11/15/31 (c)	$	98,000	$	61,291
7.000% 5/15/27 (c) (d)		24,000		23,590
LCPR Senior Secured Financing DAC
6.750% 10/15/27 (c)		177,000		161,960
McGraw-Hill Education, Inc.
5.750% 8/01/28 (c)		177,000		174,918
8.000% 8/01/29 (c)		130,000		130,466
Time Warner Cable Enterprises LLC
8.375% 7/15/33		112,000		128,902
Virgin Media Vendor Financing Notes IV DAC
5.000% 7/15/28 (c)		277,000		266,962
				2,585,831
Mining — 1.3%
Constellium SE
3.750% 4/15/29 (c)		300,000		280,158
Novelis Corp.
3.250% 11/15/26 (c)		48,000		46,319
3.875% 8/15/31 (c)		341,000		311,729
				638,206
Miscellaneous - Manufacturing — 0.5%
Amsted Industries, Inc.
4.625% 5/15/30 (c)		85,000		81,187
5.625% 7/01/27 (c)		175,000		174,532
				255,719
Oil & Gas — 3.3%
Apache Corp.
4.750% 4/15/43 (d)		65,000		53,666
5.350% 7/01/49		197,000		170,764
CVR Energy, Inc.
5.750% 2/15/28 (c)		134,000		125,840
Hilcorp Energy I LP/Hilcorp Finance Co.
6.875% 5/15/34 (c)		250,000		249,071
Occidental Petroleum Corp.
6.200% 3/15/40		397,000		412,144
Parkland Corp.
4.625% 5/01/30 (c)		148,000		139,572
6.625% 8/15/32 (c)		27,000		27,410
Sunoco LP/Sunoco Finance Corp.
4.500% 4/30/30		86,000		82,405
6.000% 4/15/27		99,000		99,329
7.000% 9/15/28 (c)		67,000		69,437
Transocean Poseidon Ltd.
6.875% 2/01/27 (c)		17,400		17,371
Transocean, Inc.
8.250% 5/15/29 (c)		132,000		130,855
8.500% 5/15/31 (c)		64,000		63,594
				1,641,458
Oil & Gas Services — 0.5%
Weatherford International Ltd.
8.625% 4/30/30 (c)		243,000		253,211

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Packaging & Containers — 2.5%
Clydesdale Acquisition Holdings, Inc.
8.750% 4/15/30 (c)	$	272,000	$	276,200
Graphic Packaging International LLC
3.750% 2/01/30 (c)		90,000		84,275
Mauser Packaging Solutions Holding Co.
7.875% 4/15/27 (c)		312,000		322,351
9.250% 4/15/27 (c)		446,000		457,317
Trident TPI Holdings, Inc.
12.750% 12/31/28 (c)		72,000		79,929
				1,220,072
Pharmaceuticals — 3.9%
1375209 BC Ltd.
9.000% 1/30/28 (c) (d)		535,000		530,246
AdaptHealth LLC
5.125% 3/01/30 (c)		365,000		341,655
Bausch Health Cos., Inc.
4.875% 6/01/28 (c)		215,000		168,238
5.250% 1/30/30 (c)		137,000		76,720
5.500% 11/01/25 (c) (d)		109,000		106,483
11.000% 9/30/28 (c)		66,000		61,545
Grifols SA
4.750% 10/15/28 (c) (d)		293,000		274,444
Herbalife Ltd., Convertible,
4.250% 6/15/28		50,000		36,582
Herbalife Nutrition Ltd./HLF Financing, Inc.
7.875% 9/01/25 (c)		134,000		133,503
HLF Financing SARL LLC/Herbalife International, Inc.
4.875% 6/01/29 (c)		25,000		15,730
12.250% 4/15/29 (c)		118,000		117,618
Organon & Co./Organon Foreign Debt Co-Issuer BV
6.750% 5/15/34 (c)		92,000		95,015
				1,957,779
Pipelines — 8.0%
CQP Holdco LP/BIP-V Chinook Holdco LLC
5.500% 6/15/31 (c)		815,000		799,373
Energy Transfer LP
5 yr. CMT + 5.694% 6.500% VRN (f)		350,000		349,163
5 yr. CMT + 5.306% 7.125% VRN (f)		89,000		90,916
EnLink Midstream Partners LP
5.450% 6/01/47		52,000		49,174
5.600% 4/01/44		257,000		245,625
EQM Midstream Partners LP
6.375% 4/01/29 (c)		137,000		141,455
6.500% 7/01/27 (c)		151,000		155,546
Flex Intermediate Holdco LLC
3.363% 6/30/31 (c)		293,000		256,743
Global Partners LP/GLP Finance Corp.
6.875% 1/15/29		53,000		53,163
8.250% 1/15/32 (c)		246,000		255,173
Harvest Midstream I LP
7.500% 9/01/28 (c)		389,000		398,073
Hess Midstream Operations LP
6.500% 6/01/29 (c)		56,000		57,963

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
ITT Holdings LLC
6.500% 8/01/29 (c)	$	524,000	$	496,413
NGL Energy Operating LLC/NGL Energy Finance Corp.
8.125% 2/15/29 (c)		77,000		78,952
8.375% 2/15/32 (c)		137,000		141,186
Northriver Midstream Finance LP
6.750% 7/15/32 (c) (e)		153,000		157,914
Venture Global Calcasieu Pass LLC
3.875% 8/15/29 (c)		133,000		125,689
4.125% 8/15/31 (c)		152,000		141,319
				3,993,840
Private Equity — 1.0%
HAT Holdings I LLC/HAT Holdings II LLC
3.375% 6/15/26 (c)		175,000		169,468
8.000% 6/15/27 (c)		286,000		302,983
				472,451
Real Estate Investment Trusts (REITS) — 1.3%
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (c)		130,000		121,185
Necessity Retail REIT, Inc./American Finance Operating Partner LP
4.500% 9/30/28 (c)		22,000		20,647
RLJ Lodging Trust LP
4.000% 9/15/29 (c)		284,000		261,430
Service Properties Trust
8.375% 6/15/29		142,000		141,840
8.875% 6/15/32		124,000		118,447
				663,549
Retail — 5.4%
1011778 BC ULC/New Red Finance, Inc.
5.625% 9/15/29 (c)		52,000		52,751
6.125% 6/15/29 (c)		211,000		217,068
Bath & Body Works, Inc.
6.750% 7/01/36		97,000		99,969
6.875% 11/01/35		222,000		231,324
Carvana Co.
13.000% 6/01/30 (c)		43,979		47,822
14.000% 6/01/31 (c)		192,600		226,867
CEC Entertainment LLC
6.750% 5/01/26 (c)		107,000		106,104
Michaels Cos., Inc.
5.250% 5/01/28 (c)		33,000		24,358
7.875% 5/01/29 (c)		43,000		25,016
PetSmart, Inc./PetSmart Finance Corp.
4.750% 2/15/28 (c)		78,000		74,780
7.750% 2/15/29 (c)		141,000		139,190
Raising Cane's Restaurants LLC
9.375% 5/01/29 (c)		29,000		31,402
Specialty Building Products Holdings LLC/SBP Finance Corp.
6.375% 9/30/26 (c)		258,000		257,031
Staples, Inc.
10.750% 9/01/29 (c)		111,000		107,703
12.750% 1/15/30 (c)		78,198		64,232

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Suburban Propane Partners LP/Suburban Energy Finance Corp.
5.000% 6/01/31 (c)	$	192,000	$	179,010
Superior Plus LP/Superior General Partner, Inc.
4.500% 3/15/29 (c)		285,000		270,221
Walgreens Boots Alliance, Inc.
3.450% 6/01/26		230,000		221,263
4.650% 6/01/46		52,000		35,048
4.800% 11/18/44		65,000		48,638
8.125% 8/15/29		225,000		224,569
				2,684,366
Software — 1.4%
Cloud Software Group, Inc.
6.500% 3/31/29 (c)		208,000		206,953
8.250% 6/30/32 (c)		60,000		62,718
9.000% 9/30/29 (c)		152,000		154,677
Consensus Cloud Solutions, Inc.
6.000% 10/15/26 (c)		88,000		87,759
Veritas US, Inc./Veritas Bermuda Ltd., (Acquired 3/18/22, Cost $180,180),
7.500% 9/01/25 (b) (c)		198,000		185,751
				697,858
Telecommunications — 6.3%
Altice Financing SA
5.000% 1/15/28 (c)		152,000		128,576
5.750% 8/15/29 (c)		17,000		13,662
C&W Senior Finance Ltd.
6.875% 9/15/27 (c)		267,000		266,072
Connect Finco SARL/Connect US Finco LLC
6.750% 10/01/26 (c)		253,473		253,473
9.000% 9/15/29 (c)		200,000		193,547
Consolidated Communications, Inc.
5.000% 10/01/28 (c)		245,000		225,294
6.500% 10/01/28 (c)		144,000		135,966
Frontier Communications Holdings LLC
6.000% 1/15/30 (c)		964,000		962,325
Hughes Satellite Systems Corp.
5.250% 8/01/26		151,000		140,479
Level 3 Financing, Inc.
4.500% 4/01/30 (c)		84,000		65,059
11.000% 11/15/29 (c)		463,000		512,807
Sable International Finance Ltd.
7.125% 10/15/32 (c) (e)		205,000		205,769
Zayo Group Holdings, Inc.
4.000% 3/01/27 (c)		34,000		30,411
				3,133,440
Transportation — 2.1%
Carriage Purchaser, Inc.
7.875% 10/15/29 (c)		191,000		177,505
Genesee & Wyoming, Inc.
6.250% 4/15/32 (c)		174,000		178,933
Seaspan Corp.
5.500% 8/01/29 (c)		605,000		576,235

MML High Yield Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Watco Cos. LLC/Watco Finance Corp.
7.125% 8/01/32 (c)	$	94,000	$	97,974
				1,030,647

TOTAL CORPORATE DEBT (Cost $43,091,744)				43,552,133

TOTAL BONDS & NOTES (Cost $48,076,427)				48,556,436

TOTAL LONG-TERM INVESTMENTS (Cost $48,076,427)				48,556,436

	Number of Shares
SHORT-TERM INVESTMENTS — 8.2%
Investment of Cash Collateral from Securities Loaned — 4.5%
State Street Navigator Securities Lending Government Money Market Portfolio (g)		2,247,465		2,247,465

	Principal Amount
Repurchase Agreement — 3.7%
Fixed Income Clearing Corp., Repurchase Agreement, dated 9/30/24, 1.520%, due 10/01/24 (h)	$	1,848,067		1,848,067

TOTAL SHORT-TERM INVESTMENTS (Cost $4,095,532)				4,095,532

TOTAL INVESTMENTS — 106.1% (Cost $52,171,959) (i)				52,651,968

Other Assets/(Liabilities) — (6.1)%				(3,047,269)

NET ASSETS — 100.0%			$	49,604,699

Abbreviation Legend

CMT	Constant Maturity Treasury Index

SOFR	Secured Overnight Financing Rate

STEP	Step Coupon Bond

VRN	Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)	All or a portion of the security represents unsettled bank loan commitments at September 30, 2024, where the rate will be determined at time of settlement.

(b)	Restricted security. Certain securities are restricted to resale. At September 30, 2024, these securities amounted to a value of $238,012 or 0.48% of net assets. The Fund generally bears the costs, if any, associated with the disposition of restricted securities.

(c)

(d)	Denotes all or a portion of security on loan. The total value of securities on loan as of September 30, 2024, was $2,201,128 or 4.44% of net assets. (Note 2).

(e)	A portion of this security is purchased on a when-issued, delayed-delivery or forward commitment basis.

(f)	Security is perpetual and has no stated maturity date.

(g)	Represents investment of security lending cash collateral. (Note 2).

(h)	Maturity value of $1,848,145. Collateralized by U.S. Government Agency obligations with a rate of 4.875%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $1,885,200.

(i)	See Note 3 for aggregate cost for federal tax purposes.

MML Inflation-Protected and Income Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 86.2%

NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 59.5%
Automobile Asset-Backed Securities — 11.2%
American Credit Acceptance Receivables Trust, Series 2021-2, Class E
2.540% 7/13/27 (a)	$	3,800,000	$	3,763,983
BOF URSA VI Funding Trust I, Series 2023-CAR1, Class A2
5.542% 10/27/31 (a)		672,002		675,541
Carvana Auto Receivables Trust, Series 2021-N3, Class B
0.660% 6/12/28		646,623		621,445
Drive Auto Receivables Trust
Series 2021-1, Class D, 1.450% 1/16/29		3,088,698		3,037,573
Series 2021-3, Class C, 1.470% 1/15/27		532,259		529,530
Exeter Automobile Receivables Trust
Series 2021-2A, Class D, 1.400% 4/15/27		1,299,900		1,264,587
Series 2020-3A, Class E, 3.440% 8/17/26 (a)		3,043,364		3,014,750
Series 2023-5A, Class A2, 6.200% 4/15/26		106,698		106,756
Flagship Credit Auto Trust, Series 2021-2, Class C
1.270% 6/15/27 (a)		3,368,760		3,307,061
Ford Credit Auto Owner Trust, Series 2018-1, Class C
3.490% 7/15/31 (a)		2,000,000		1,988,627
OneMain Direct Auto Receivables Trust, Series 2022-1A, Class C
5.310% 6/14/29 (a)		800,000		802,783
Westlake Automobile Receivables Trust, Series 2023-4A, Class A2
6.230% 1/15/27 (a)		882,262		886,922
				19,999,558
Commercial Mortgage-Backed Securities — 3.7%
BHMS Mortgage Trust, Series 2018-ATLS, Class B, 1 mo. USD Term SOFR + 1.797%
6.894% FRN 7/15/35 (a)		1,000,000		992,503
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class D, 1 mo. USD Term SOFR + 2.047%
7.144% FRN 12/15/37 (a)		308,865		308,479
COMM Mortgage Trust, Series 2015-LC19, Class D
2.867% 2/10/48 (a)		1,700,000		1,563,543
Extended Stay America Trust
Series 2021-ESH, Class D, 1 mo. USD Term SOFR + 2.364% 7.462% FRN 7/15/38 (a)		801,932		801,932
Series 2021-ESH, Class F, 1 mo. USD Term SOFR + 3.814% 8.912% FRN 7/15/38 (a)		1,069,242		1,069,242
KREF Ltd., Series 2021-FL2, Class D, 1 mo. USD Term SOFR + 2.314%
7.397% FRN 2/15/39 (a)		700,000		658,321
Ready Capital Mortgage Financing LLC, Series 2023-FL12, Class A, 1 mo. USD Term SOFR + 2.335%
7.190% FRN 5/25/38 (a)		1,247,166		1,248,721
				6,642,741

MML Inflation-Protected and Income Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Home Equity Asset-Backed Securities — 1.3%
Home Equity Asset Trust, Series 2005-9, Class M1, 1 mo. USD Term SOFR + 0.729%
5.584% FRN 4/25/36	$	757,506	$	747,250
JP Morgan Mortgage Acquisition Trust, Series 2007-CH3, Class A5, 1 mo. USD Term SOFR + 0.374%
5.229% FRN 3/25/37		113,949		112,226
Point Securitization Trust, Series 2024-1, Class A1
6.500% 6/25/54 (a)		1,175,712		1,180,182
Structured Asset Securities Corp. Mortgage Loan Trust
Series 2006-BC6, Class A4, 1 mo. USD Term SOFR + 0.284% 5.139% FRN 1/25/37		76,449		75,397
Series 2006-GEL1, Class M2, 1 mo. USD Term SOFR + 1.314% 6.169% FRN 11/25/35 (a)		156,770		155,985
				2,271,040
Other Asset-Backed Securities — 29.1%
321 Henderson Receivables I LLC, Series 2006-3A, Class A1, 1 mo. USD Term SOFR + 0.314%
5.411% FRN 9/15/41 (a)		37,507		37,088
ACHV ABS Trust
Series 2024-1PL, Class A, 5.900% 4/25/31 (a)		956,071		964,152
Series 2023-4CP, Class B, 7.240% 11/25/30 (a)		332,938		334,264
Affirm Asset Securitization Trust
Series 2021-Z2, Class A, 1.170% 11/16/26 (a)		84,180		83,307
Series 2022-X1, Class A, 1.750% 2/15/27 (a)		34,397		34,355
Series 2022-Z1, Class A, 4.550% 6/15/27 (a)		99,806		99,583
Series 2023-A, Class 1A, 6.610% 1/18/28 (a)		7,500,000		7,531,627
Series 2023-X1, Class A, 7.110% 11/15/28 (a)		1,395,781		1,401,221
Series 2023-X1, Class B, 7.770% 11/15/28 (a)		2,000,000		2,024,623
Alterna Funding III LLC
Series 2024-1A, Class A, 6.260% 5/16/39 (a)		1,488,226		1,515,148
Series 2024-1A, Class B, 7.136% 5/16/39 (a)		893,602		908,433
BHG Securitization Trust
Series 2021-B, Class A, 0.900% 10/17/34 (a)		162,623		161,204
Series 2021-A, Class A, 1.420% 11/17/33 (a)		1,081,959		1,047,008
Series 2022-C, Class A, 5.320% 10/17/35 (a)		385,587		385,561
Series 2023-A, Class A, 5.550% 4/17/36 (a)		818,914		820,773
Conn's Receivables Funding LLC, Series 2024-A, Class A
7.050% 1/16/29 (a)		281,121		281,373
FCI Funding LLC, Series 2024-1A, Class A
5.440% 8/15/36 (a)		968,903		970,114
FNA VI LLC, Series 2021-1A, Class A
1.350% 1/10/32 (a)		1,753,794		1,642,811
GreenSky Home Improvement Trust, Series 2024-1, Class A2
5.880% 6/25/59 (a)		3,000,000		3,038,219
Hilton Grand Vacations Trust, Series 2022-2A, Class C
5.570% 1/25/37 (a)		366,616		367,740
LL ABS Trust, Series 2022-1A, Class B
5.050% 11/15/29 (a)		362,898		362,556
Marlette Funding Trust
Series 2022-2A, Class B, 5.500% 8/15/32 (a)		1,120,209		1,120,452
Series 2023-2A, Class A, 6.040% 6/15/33 (a)		66,096		66,126
MCA Fund Holding LLC, Series 2020-1, Class A
3.250% 11/15/35 (a)		420,354		407,317
MVW Owner Trust, Series 2018-1A, Class A
3.450% 1/21/36 (a)		174,584		173,488

MML Inflation-Protected and Income Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
NP SPE II LLC, Series 2019-1A, Class A1
2.574% 9/20/49 (a)	$	115,106	$	111,939
Oak Street Investment Grade Net Lease Fund
Series 2021-1A, Class A1, 1.480% 1/20/51 (a)		3,164,184		3,003,557
Series 2020-1A, Class A1, 1.850% 11/20/50 (a)		2,299,571		2,205,485
Oxford Finance Funding LLC
Series 2020-1A, Class A2, 3.101% 2/15/28 (a)		2,653,101		2,628,964
Series 2020-1A, Class B, 4.037% 2/15/28 (a)		538,020		533,451
Pagaya AI Debt Grantor Trust
Series 2024-8, Class A, 5.331% 1/15/32 (a)		5,000,000		5,012,559
Series 2024-5, Class A, 6.278% 10/15/31 (a)		1,337,057		1,355,290
Pagaya AI Debt Trust
Series 2024-4, Class B, 6.539% 8/15/31 (a)		3,353,652		3,400,806
Series 2023-5, Class A, 7.179% 4/15/31 (a)		285,951		286,436
PFS Financing Corp., Series 2022-A, Class B
2.770% 2/15/27 (a)		800,000		790,832
PVOne LLC, Series 2023-2A, Class A
7.670% 9/17/35 (a)		959,873		969,135
RAM LLC, Series 2024-1, Class A
6.669% 2/15/39 (a)		2,303,098		2,324,842
Reach ABS Trust, Series 2024-1A, Class A
6.300% 2/18/31 (a)		534,455		537,406
Reach Financial LLC, Series 2023-1A, Class A
7.050% 2/18/31 (a)		778,778		780,983
SBA Tower Trust, Series 2014-2A, Class C,
3.869% STEP 10/15/49 (a)		2,390,000		2,389,206
				52,109,434
Real Estate Investment Trusts (REITS) — 0.6%
SBA Tower Trust
2.836% 1/15/50 (a)		1,000,000		992,818
Student Loans Asset-Backed Securities — 6.3%
Commonbond Student Loan Trust
Series 2021-AGS, Class B, 1.400% 3/25/52 (a)		105,408		81,740
Series 2018-CGS, Class C, 4.350% 2/25/46 (a)		13,372		11,761
Edsouth Indenture No. 9 LLC, Series 2015-1, Class A, 30 day USD SOFR Average + 0.914%
6.195% FRN 10/25/56 (a)		132,984		129,606
JP Morgan Student Loan Trust, Series 2007-A, Class B, 90 day USD SOFR Average + 0.612%
5.971% FRN 6/28/39 (a)		237,615		212,234
Laurel Road Prime Student Loan Trust, Series 2019-A, Class A1FX
2.340% 10/25/48 (a)		38,998		38,139
Navient Private Education Refi Loan Trust
Series 2021-A, Class A, 0.840% 5/15/69 (a)		1,395,673		1,269,589
Series 2020-HA, Class A, 1.310% 1/15/69 (a)		217,515		203,697
Navient Student Loan Trust, Series 2017-1A, Class A3, 30 day USD SOFR Average + 1.264%
6.545% FRN 7/26/66 (a)		239,350		238,758
Nelnet Student Loan Trust
Series 2005-2, Class B, 90 day USD SOFR Average + 0.432% 5.803% FRN 3/23/37		854,830		826,373
Series 2006-2, Class B, 90 day USD SOFR Average + 0.462% 5.821% FRN 1/25/38		436,227		371,652
Series 2006-3, Class B, 90 day USD SOFR Average + 0.512% 5.861% FRN 6/25/41		135,247		120,909

MML Inflation-Protected and Income Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2004-3, Class B, 90 day USD SOFR Average + 0.612% 5.971% FRN 10/25/40	$	870,503	$	860,367
Series 2014-2A, Class B, 30 day USD SOFR Average + 1.614% 6.895% FRN 6/25/41 (a)		375,000		364,962
SLC Student Loan Trust
Series 2006-2, Class B, 90 day USD SOFR Average + 0.492% 5.861% FRN 12/15/39		553,074		491,872
Series 2005-2, Class B, 90 day USD SOFR Average + 0.542% 5.911% FRN 3/15/40		791,806		718,189
SLM Student Loan Trust
Series 2006-4, Class B, 90 day USD SOFR Average + 0.462% 5.821% FRN 1/25/70		175,549		163,580
Series 2006-5, Class B, 90 day USD SOFR Average + 0.472% 5.831% FRN 10/25/40		281,809		264,075
Series 2006-2, Class B, 90 day USD SOFR Average + 0.482% 5.841% FRN 1/25/41		255,666		238,239
Series 2005-8, Class B, 90 day USD SOFR Average + 0.572% 5.931% FRN 1/25/55		219,042		207,637
Series 2004-8, Class B, 90 day USD SOFR Average + 0.722% 6.081% FRN 1/25/40		227,479		220,069
Series 2004-3, Class B, 90 day USD SOFR Average + 0.732% 6.091% FRN 10/25/64		135,403		127,913
SMB Asset-Backed Repackaging Trust, Series 2024-R1, Class M
6.000% 9/15/54 (a)		2,966,667		2,952,317
SMB Private Education Loan Trust
Series 2018-B, Class A2B, 1 mo. USD Term SOFR + 0.834% 5.931% FRN 1/15/37 (a)		343,000		340,899
Series 2019-A, Class A2B, 1 mo. USD Term SOFR + 0.984% 6.081% FRN 7/15/36 (a)		481,207		479,559
SoFi Alternative Trust, Series 2019-C, Class PT,
5.240% VRN 1/25/45 (a) (b)		416,050		411,300
				11,345,436
Whole Loan Collateral Collateralized Mortgage Obligations — 7.3%
Angel Oak Mortgage Trust
Series 2020-6, Class A1, 1.261% VRN 5/25/65 (a) (b)		783,210		713,206
Series 2022-2, Class A1, 3.353% VRN 1/25/67 (a) (b)		1,737,552		1,657,254
CIM Trust, Series 2019-INV3, Class A11, 30 day USD SOFR Average + 1.064%
5.500% FRN 8/25/49 (a)		689,273		657,186
COLT Mortgage Loan Trust, Series 2022-1, Class A1,
2.284% VRN 12/27/66 (a) (b)		5,475,962		5,027,083
First Franklin Mortgage Loan Trust, Series 2006-FF15, Class A5, 1 mo. USD Term SOFR + 0.274%
5.129% FRN 11/25/36		135,559		136,402
OBX Trust
Series 2021-NQM2, Class A2, 1.357% VRN 5/25/61 (a) (b)		1,168,135		976,394
Series 2020-EXP1, Class 2A2, 1 mo. USD Term SOFR + 1.064% 5.919% FRN 2/25/60 (a)		248,162		239,725
PSMC Trust, Series 2020-2, Class A2,
3.000% VRN 5/25/50 (a) (b)		577,816		520,517
STAR Trust, Series 2021-1, Class A3,
1.528% VRN 5/25/65 (a) (b)		2,156,379		1,950,538
Starwood Mortgage Residential Trust, Series 2019-INV1, Class A3,
2.916% VRN 9/27/49 (a) (b)		540,752		525,226
Verus Securitization Trust
Series 2021-3, Class A3, 1.437% VRN 6/25/66 (a) (b)		637,083		554,823

MML Inflation-Protected and Income Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2019-INV2, Class A3, 4.219% VRN 7/25/59 (a) (b)	$	85,261	$	84,799
				13,043,153

TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $107,077,150)				106,404,180

U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (c) — 5.6%
Pass-Through Securities — 0.0%
Federal Home Loan Mortgage Corp. Pool #1Q0239 1 yr. CMT + 2.143% 6.356% FRN 3/01/37		56,907		57,682
Whole Loans — 5.6%
Federal Home Loan Mortgage Corp. STACR REMICS Trust
Series 2021-DNA6, Class M1, 30 day USD SOFR Average + 0.800% 6.080% FRN 10/25/41 (a)		1,122,183		1,122,178
Series 2021-DNA7, Class M1, 30 day USD SOFR Average + 0.850% 6.130% FRN 11/25/41 (a)		1,242,818		1,241,029
Series 2022-DNA2, Class M1A, 30 day USD SOFR Average + 1.300% 6.580% FRN 2/25/42 (a)		1,349,548		1,353,190
Series 2020-DNA1, Class M2, 30 day USD SOFR Average + 1.814% 7.095% FRN 1/25/50 (a)		328,513		329,939
Series 2022-DNA3, Class M1A, 30 day USD SOFR Average + 2.000% 7.280% FRN 4/25/42 (a)		1,235,537		1,251,129
Series 2018-DNA3, Class M2A, 30 day USD SOFR Average + 2.214% 7.495% FRN 9/25/48 (a)		127,111		127,618
Series 2022-DNA5, Class M1A, 30 day USD SOFR Average + 2.950% 8.230% FRN 6/25/42 (a)		392,533		402,990
Federal National Mortgage Association Connecticut Avenue Securities
Series 2023-R05, Class 1M1, 30 day USD SOFR Average + 1.900% 7.163% FRN 6/25/43 (a)		793,718		801,733
Series 2022-R05, Class 2M1, 30 day USD SOFR Average + 1.900% 7.180% FRN 4/25/42 (a)		729,447		734,817
Series 2023-R03, Class 2M1, 30 day USD SOFR Average + 2.500% 7.780% FRN 4/25/43 (a)		763,546		777,037
Series 2022-R07, Class 1M1, 30 day USD SOFR Average + 2.950% 8.213% FRN 6/25/42 (a)		1,821,432		1,876,091
				10,017,751

TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $10,006,350)				10,075,433

U.S. TREASURY OBLIGATIONS — 21.1%
U.S. Treasury Bonds & Notes — 21.1%
U.S. Treasury Inflation-Indexed Bonds
0.125% 2/15/51		483,236		304,990
0.125% 2/15/52		621,429		386,318
0.250% 2/15/50		734,034		486,983
0.625% 2/15/43		273,608		219,549
0.750% 2/15/42		821,256		684,291
0.750% 2/15/45		1,008,438		805,779
0.875% 2/15/47		586,337		470,624
1.000% 2/15/46		464,601		386,992
1.000% 2/15/48		446,418		366,652
1.000% 2/15/49		312,483		254,811
1.375% 2/15/44		877,214		799,803
1.500% 2/15/53		581,961		525,966

MML Inflation-Protected and Income Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
2.125% 2/15/40	$	436,563	$	455,492
2.125% 2/15/41		430,878		450,764
2.125% 2/15/54		358,694		372,928
2.500% 1/15/29		366,243		381,954
3.375% 4/15/32		442,998		500,374
3.875% 4/15/29		1,549,741		1,710,277
U.S. Treasury Inflation-Indexed Notes
0.125% 4/15/25		1,826,520		1,793,974
0.125% 1/15/30		1,650,362		1,539,692
0.125% 7/15/30		1,410,763		1,311,756
0.125% 1/15/31		1,395,529		1,282,198
0.125% 7/15/31		1,584,252		1,449,207
0.125% 1/15/32		1,475,045		1,333,013
0.250% 7/15/29		1,623,098		1,539,816
0.375% 7/15/27		257,158		250,055
0.500% 1/15/28		1,810,670		1,753,112
0.625% 7/15/32		2,056,807		1,925,688
0.750% 7/15/28 (d)		1,534,950		1,500,842
0.875% 1/15/29		1,370,204		1,337,613
1.125% 1/15/33		1,900,620		1,833,699
1.250% 4/15/28		1,761,648		1,744,931
1.375% 7/15/33		2,019,479		1,990,523
1.625% 10/15/27		2,304,041		2,319,115
1.750% 1/15/34		1,534,830		1,551,850
2.375% 10/15/28		1,643,008		1,706,325
				37,727,956

TOTAL U.S. TREASURY OBLIGATIONS (Cost $39,358,131)				37,727,956

TOTAL BONDS & NOTES (Cost $156,441,631)				154,207,569

TOTAL LONG-TERM INVESTMENTS (Cost $156,441,631)				154,207,569


SHORT-TERM INVESTMENTS — 12.6%
Commercial Paper — 11.1%
American Honda Finance Corp.
5.012% 11/12/24		3,000,000		2,982,197
Avangrid, Inc.
5.044% 10/29/24 (a)		3,000,000		2,987,778
EIDP, Inc.
5.753% 12/02/24 (a)		1,000,000		991,616
Evergy Kansas Central, Inc.
4.959% 10/01/24 (a)		3,000,000		2,999,591
NextEra Energy Capital Holdings, Inc.
5.631% 10/04/24 (a)		2,000,000		1,998,904
Penske Truck Leasing Co. LP
5.665% 10/15/24		4,000,000		3,991,543
Volkswagen Financial Services
5.376% 10/10/24 (a)		2,000,000		1,997,255
Walt Disney Co.
5.577% 10/28/24 (a)		2,000,000		1,992,377
				19,941,261

MML Inflation-Protected and Income Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Repurchase Agreement — 1.5%
Fixed Income Clearing Corp., Repurchase Agreement, dated 9/30/24, 1.520%, due 10/01/24 (e)	$	2,603,190	$	2,603,190

TOTAL SHORT-TERM INVESTMENTS (Cost $22,544,740)				22,544,451

TOTAL INVESTMENTS — 98.8% (Cost $178,986,371) (f)				176,752,020

Other Assets/(Liabilities) — 1.2%				2,151,378

NET ASSETS — 100.0%			$	178,903,398

Abbreviation Legend

CMT	Constant Maturity Treasury Index

FRN	Floating Rate Note

REMICS

Real Estate Mortgage Investment Conduits

SOFR	Secured Overnight Financing Rate

STEP	Step Coupon Bond

VRN	Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)

(b)

(c)	May contain securities that are issued by a U.S. Government Agency, but are unsecured and are not guaranteed by a U.S. Government Agency.

(d)	All or a portion of this security is pledged/held as collateral for open derivatives.

(e)	Maturity value of $2,603,300. Collateralized by U.S. Government Agency obligations with a rate of 0.750%, maturity date of 5/31/26, and an aggregate market value, including accrued interest, of $2,655,402.

(f)	See Note 3 for aggregate cost for federal tax purposes.

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/Net Unrealized Appreciation (Depreciation)
Short
U.S. Treasury Long Bond	12/19/24		9	$	(1,137,095)	$	19,407
U.S. Treasury Note 10 Year	12/19/24		15		(1,731,279)		17,060
U.S. Treasury Ultra 10 Year	12/19/24		5		(588,890)		(2,594)
U.S. Treasury Ultra Bond	12/19/24		2		(273,370)		7,182
U.S. Treasury Note 2 Year	12/31/24		208		(43,238,159)		(76,216)
U.S. Treasury Note 5 Year	12/31/24		20		(2,192,969)		(4,687)
						$	(39,848)

MML Inflation-Protected and Income Fund — Portfolio of Investments (Continued)

Centrally Cleared Interest Rate Swaps
Paid by the Fund		Received by the Fund
Rate/ Reference	Frequency	Rate/ Reference		Frequency		Termination Date		Notional Amount		Value		Upfront Premium Paid/ (Received)		Unrealized Appreciation (Depreciation)
Fixed 2.490%	Maturity		U.S. Consumer Price Index		Maturity		7/31/26	USD	2,000,000	$	427	$	—	$	427
Fixed 2.482%	Maturity		U.S. Consumer Price Index		Maturity		9/07/26	USD	2,000,000		(1,320)		—		(1,320)
Fixed 2.164%	Maturity		U.S. Consumer Price Index		Maturity		9/19/26	USD	4,000,000		3,656		—		3,656
										$	2,763	$	—	$	2,763

OTC Total Return Swaps

Paid by the Fund

Received by the Fund

Rate/
Reference

Frequency

Rate/ Reference

Frequency

Counterparty

Termination Date

No. of Contracts/
Notional

Value

Upfront Premium Paid/ (Received)

Unrealized
Appreciation
(Depreciation)

Fed Funds + 16.0 BP

Maturity

Bloomberg US Treasury Inflation Notes TR Index

Maturity

BNP Paribas SA

11/26/24

USD

30,642,940

1,513,483

—

1,513,483

Fed Funds + 23.5 BP

Maturity

Bloomberg US Treasury Inflation Notes TR Index

Maturity

BNP Paribas SA

1/30/25

USD

37,598,528

863,793

—

863,793

Fed Funds + 18.0 BP

Maturity

Bloomberg US Treasury Inflation Notes TR Index

Maturity

Goldman Sachs International

10/31/24

USD

38,000,000

2,561,878

—

2,561,878

Fed Funds + 25.0 BP

Maturity

Bloomberg US Treasury Inflation Notes TR Index

Maturity

Goldman Sachs International

2/28/25

USD

31,881,878

478,602

—

478,602

5,417,756

—

5,417,756

Currency Legend

USD	U.S. Dollar

MML iShares^®60/40 Allocation Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Number of Shares		Value
EXCHANGE-TRADED FUNDS — 99.9%
iShares 1-5 Year Investment Grade Corporate Bond ETF		46,307	$	2,438,527
iShares 20+ Year Treasury Bond ETF		9,905		971,681
iShares Broad USD High Yield Corporate Bond ETF		12,956		487,793
iShares Core Dividend Growth ETF		23,470		1,471,334
iShares Core International Aggregate Bond ETF		4,704		243,761
iShares Core MSCI Emerging Markets ETF		16,770		962,766
iShares Core MSCI International Developed Markets ETF		89,358		6,329,227
iShares Core S&P 500 ETF		7,653		4,414,403
iShares Core S&P Mid-Cap ETF		15,679		977,115
iShares Core S&P Total U.S. Stock Market ETF		120,911		15,188,840
iShares Core U.S. Aggregate Bond ETF		151,503		15,342,709

TOTAL EXCHANGE-TRADED FUNDS (Cost $44,016,122)				48,828,156

TOTAL LONG-TERM INVESTMENTS (Cost $44,016,122)				48,828,156

TOTAL INVESTMENTS — 99.9% (Cost $44,016,122) (a)				48,828,156

Other Assets/(Liabilities) — 0.1%				24,485

NET ASSETS — 100.0%			$	48,852,641

Abbreviation Legend

ETF	Exchange-Traded Fund

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)	See Note 3 for aggregate cost for federal tax purposes.

MML iShares^® 80/20 Allocation Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Number of Shares		Value
EXCHANGE-TRADED FUNDS — 99.9%
iShares 1-5 Year Investment Grade Corporate Bond ETF (a)		81,947	$	4,315,329
iShares 20+ Year Treasury Bond ETF		8,764		859,748
iShares Broad USD High Yield Corporate Bond ETF		22,927		863,201
iShares Core Dividend Growth ETF (a)		41,533		2,603,704
iShares Core International Aggregate Bond ETF (a)		16,650		862,803
iShares Core MSCI Emerging Markets ETF		74,191		4,259,305
iShares Core MSCI International Developed Markets ETF (a)		182,459		12,923,571
iShares Core S&P 500 ETF		12,039		6,944,336
iShares Core S&P Mid-Cap ETF		55,493		3,458,324
iShares Core S&P Total U.S. Stock Market ETF		310,601		39,017,698
iShares Core U.S. Aggregate Bond ETF		102,134		10,343,110

TOTAL EXCHANGE-TRADED FUNDS (Cost $73,397,816)				86,451,129

TOTAL LONG-TERM INVESTMENTS (Cost $73,397,816)				86,451,129


SHORT-TERM INVESTMENTS — 1.8%
Investment of Cash Collateral from Securities Loaned — 1.7%
State Street Navigator Securities Lending Government Money Market Portfolio (b)		1,432,575		1,432,575

	Principal Amount
Repurchase Agreement — 0.1%
Fixed Income Clearing Corp., Repurchase Agreement, dated 9/30/24, 1.520%, due 10/01/24 (c)	$	106,745		106,745

TOTAL SHORT-TERM INVESTMENTS (Cost $1,539,320)				1,539,320

TOTAL INVESTMENTS — 101.7% (Cost $74,937,136) (d)				87,990,449

Other Assets/(Liabilities) — (1.7)%				(1,478,766)

NET ASSETS — 100.0%			$	86,511,683

Abbreviation Legend

ETF	Exchange-Traded Fund

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)

Denotes all or a portion of security on loan. The total value of securities on loan as of September 30, 2024, was $1,416,110 or 1.64% of net assets. The Fund received $12,764 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(b)	Represents investment of security lending cash collateral. (Note 2).

(c)	Maturity value of $106,749. Collateralized by U.S. Government Agency obligations with a rate of 4.875%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $109,049.

(d)	See Note 3 for aggregate cost for federal tax purposes.

MML Managed Bond Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 99.2%

CORPORATE DEBT — 39.8%
Aerospace & Defense — 0.5%
Boeing Co.
5.930% 5/01/60	$	605,000	$	579,510
6.858% 5/01/54 (a)		714,000		783,693
Embraer Netherlands Finance BV
7.000% 7/28/30 (a)		1,525,000		1,660,768
				3,023,971
Agriculture — 0.3%
Imperial Brands Finance PLC
5.875% 7/01/34 (a)		750,000		779,719
Reynolds American, Inc.
5.850% 8/15/45		985,000		985,458
				1,765,177
Airlines — 0.2%
United Airlines Pass-Through Trust
Series 2018-1, Class B, 4.600% 9/01/27		249,760		246,314
Series 2024-1, Class AA, 5.450% 8/15/38		834,000		867,943
				1,114,257
Auto Manufacturers — 0.4%
Ford Motor Credit Co. LLC
5.303% 9/06/29		1,565,000		1,557,632
General Motors Co.
5.150% 4/01/38		800,000		766,935
				2,324,567
Banks — 6.9%
Bank of America Corp.
5 yr. CMT + 1.200% 2.482% VRN 9/21/36		2,635,000		2,223,415
3 mo. USD Term SOFR + 1.302% 3.419% VRN 12/20/28		1,475,000		1,434,883
5 yr. CMT + 2.000% 3.846% VRN 3/08/37		2,145,000		1,982,809
Barclays PLC
5 yr. CMT + 5.867% 6.125% VRN (b)		1,300,000		1,295,620
5 yr. CMT + 5.431% 8.000% VRN (b)		1,382,000		1,455,372
BNP Paribas SA 5 yr. CMT + 3.196%
4.625% VRN (a) (b)		1,075,000		1,018,696
BPCE SA, (Acquired 10/12/21, Cost $1,860,000), 1 day USD SOFR + 1.730%
3.116% VRN 10/19/32 (a) (c)		1,860,000		1,602,500
Citigroup, Inc. 10 yr. CMT + 2.757%
7.000% VRN (b)		1,167,000		1,248,816
Discover Bank 5 yr. USD SOFR ICE Swap Rate + 1.730%
5.974% VRN 8/09/28		3,105,000		3,206,280

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
The Goldman Sachs Group, Inc. 1 day USD SOFR + 1.210%
5.049% VRN 7/23/30	$	800,000	$	820,860
HSBC Holdings PLC
1 day USD SOFR + 1.520% 5.733% VRN 5/17/32		1,224,000		1,289,396
5 yr. CMT + 3.298% 6.875% VRN (b)		754,000		776,701
ING Groep NV 5 yr. USD Swap + 4.446%
6.500% VRN (b)		1,950,000		1,951,632
JP Morgan Chase & Co. 3 mo. USD Term SOFR + 2.515%
2.956% VRN 5/13/31		1,000,000		919,749
Lloyds Banking Group PLC
5 yr. USD ICE Swap + 4.496% 7.500% VRN (b)		900,000		908,229
5 yr. CMT + 3.913% 8.000% VRN (b) (d)		975,000		1,044,583
Macquarie Bank Ltd. 5 yr. CMT + 1.700%
3.052% VRN 3/03/36 (a)		3,440,000		3,007,846
Morgan Stanley
1 day USD SOFR + 1.360% 2.484% VRN 9/16/36		1,270,000		1,062,671
1 day USD SOFR + 2.620% 5.297% VRN 4/20/37		2,320,000		2,337,553
National Australia Bank Ltd. 5 yr. CMT + 1.700%
3.347% VRN 1/12/37 (a)		2,960,000		2,638,038
NatWest Group PLC 5 yr. CMT + 5.625%
6.000% VRN (b)		1,950,000		1,948,989
Nordea Bank Abp 5 yr. CMT + 2.660%
6.300% VRN (a) (b)		545,000		540,145
Societe Generale SA
1 yr. CMT + 1.300% 2.797% VRN 1/19/28 (a)		1,400,000		1,337,592
5 yr. USD ICE Swap + 5.873% 8.000% VRN (a) (b) (d)		1,900,000		1,919,158
SVB Financial Group, 5 yr. CMT + 3.074%,
4.250% (b) (e)		298,000		372
Synovus Bank
5.625% 2/15/28		1,563,000		1,571,448
Toronto-Dominion Bank 5 yr. CMT + 4.075%
8.125% VRN 10/31/82		2,781,000		2,983,490
Wells Fargo & Co. 5 yr. CMT + 2.767%
6.850% VRN (b)		1,044,000		1,089,626
				43,616,469
Beverages — 0.4%
Bacardi Ltd.
5.150% 5/15/38 (a)		450,000		438,817
Bacardi Ltd./Bacardi-Martini BV
5.900% 6/15/43 (a)		396,000		407,586
Molson Coors Beverage Co.
4.200% 7/15/46		1,859,000		1,603,773
5.000% 5/01/42		360,000		352,484
				2,802,660
Biotechnology — 0.3%
Amgen, Inc.
5.600% 3/02/43		982,000		1,031,677
5.750% 3/02/63		700,000		738,870
				1,770,547
Chemicals — 0.3%
Dow Chemical Co.
5.600% 2/15/54		700,000		722,996

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
LYB International Finance III LLC
4.200% 5/01/50	$	1,475,000	$	1,211,206
				1,934,202
Computers — 0.3%
Kyndryl Holdings, Inc.
2.700% 10/15/28		1,150,000		1,065,103
6.350% 2/20/34		568,000		607,241
				1,672,344
Diversified Financial Services — 2.4%
AerCap Holdings NV 5 yr. CMT + 4.535%
5.875% VRN 10/10/79 (d)		1,350,000		1,349,974
AerCap Ireland Capital DAC/AerCap Global Aviation Trust
3.300% 1/30/32		1,965,000		1,773,410
5 yr. CMT + 2.720% 6.950% VRN 3/10/55		211,000		218,762
Apollo Global Management, Inc.
5.800% 5/21/54		1,196,000		1,275,049
ARES Finance Co. III LLC 5 yr. CMT + 3.237%
4.125% VRN 6/30/51 (a)		1,585,000		1,511,052
ARES Finance Co. LLC
4.000% 10/08/24 (a)		2,080,000		2,079,216
Avolon Holdings Funding Ltd.
2.528% 11/18/27 (a)		1,680,000		1,568,793
BGC Group, Inc.
6.600% 6/10/29		1,575,000		1,629,241
Blue Owl Finance LLC
3.125% 6/10/31 (a)		1,195,000		1,047,030
4.125% 10/07/51 (a)		462,000		347,687
Charles Schwab Corp. 5 yr. CMT + 3.168%
4.000% VRN (b)		2,000,000		1,918,378
Voya Financial, Inc.
5.000% 9/20/34		415,000		412,683
				15,131,275
Electric — 2.2%
AES Corp. 5 yr. CMT + 3.201%
7.600% VRN 1/15/55		1,554,000		1,634,871
Dominion Energy South Carolina, Inc.
6.250% 10/15/53		239,000		278,593
Duke Energy Florida LLC
6.200% 11/15/53		660,000		758,400
Emera, Inc. 3 mo. USD LIBOR + 5.440%
6.750% VRN 6/15/76		1,625,000		1,634,376
Entergy Mississippi LLC
5.850% 6/01/54		765,000		828,798
Entergy Texas, Inc.
5.800% 9/01/53		1,185,000		1,265,762
IPALCO Enterprises, Inc.
5.750% 4/01/34		547,000		572,999
MidAmerican Energy Co.
5.300% 2/01/55		492,000		508,535
NextEra Energy Capital Holdings, Inc. 5 yr. CMT + 2.547%
3.800% VRN 3/15/82		1,250,000		1,190,612
RWE Finance US LLC
5.875% 4/16/34 (a)		1,575,000		1,646,696

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Sempra
5 yr. CMT + 2.868% 4.125% VRN 4/01/52	$	1,366,000	$	1,298,806
5 yr. CMT + 4.550% 4.875% VRN (b)		1,025,000		1,013,998
Tampa Electric Co.
4.450% 6/15/49		450,000		405,922
Virginia Electric & Power Co.
5.350% 1/15/54		931,000		952,021
				13,990,389
Entertainment — 0.4%
Warnermedia Holdings, Inc.
4.279% 3/15/32		2,100,000		1,865,497
5.141% 3/15/52		825,000		636,302
				2,501,799
Food — 1.0%
JBS USA Holding Lux SARL/JBS USA Food Co./JBS Lux Co. SARL
3.625% 1/15/32		2,300,000		2,102,774
The Kroger Co.
5.000% 9/15/34		976,000		984,139
Smithfield Foods, Inc.
2.625% 9/13/31 (a)		1,730,000		1,465,952
3.000% 10/15/30 (a)		943,000		845,202
4.250% 2/01/27 (a)		1,145,000		1,125,993
				6,524,060
Gas — 0.4%
CenterPoint Energy Resources Corp.
6.625% 11/01/37		1,250,000		1,418,387
NiSource, Inc.
5.800% 2/01/42		950,000		976,211
				2,394,598
Health Care - Services — 0.6%
Cigna Group
4.800% 7/15/46		880,000		823,979
HCA, Inc.
5.900% 6/01/53		1,470,000		1,533,445
Humana, Inc.
5.750% 4/15/54		808,000		827,050
UnitedHealth Group, Inc.
5.750% 7/15/64		914,000		986,669
				4,171,143
Insurance — 7.7%
Allianz SE 5 yr. CMT + 2.973%
3.500% VRN (a) (b)		4,200,000		4,045,774
Allstate Corp., (Acquired 11/30/18, Cost $2,909,256), 3 mo. USD Term SOFR + 3.200%
8.318% VRN 8/15/53 (c)		2,885,000		2,899,425
Arthur J Gallagher & Co.
5.750% 7/15/54		565,000		589,760
Ascot Group Ltd.
4.250% 12/15/30 (a)		1,990,000		1,725,648

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Athene Global Funding
2.673% 6/07/31 (a)	$	2,505,000	$	2,166,915
AXIS Specialty Finance LLC 5 yr. CMT + 3.186%
4.900% VRN 1/15/40		1,315,000		1,258,387
CNO Financial Group, Inc.
6.450% 6/15/34		1,520,000		1,606,818
CNO Global Funding
2.650% 1/06/29 (a)		1,376,000		1,259,208
Corebridge Financial, Inc. 5 yr. CMT + 3.846%
6.875% VRN 12/15/52		3,281,000		3,396,360
Enstar Finance LLC
HYB, 5 yr. CMT + 4.006% 5.500% VRN 1/15/42		1,977,000		1,844,113
5 yr. CMT + 5.468% 5.750% VRN 9/01/40 (d)		2,200,000		2,174,007
Equitable Holdings, Inc. 5 yr. CMT + 4.736%
4.950% VRN (b) (d)		885,000		876,597
Fairfax Financial Holdings Ltd.
6.100% 3/15/55 (a)		1,545,000		1,608,772
Global Atlantic Fin Co.
3.125% 6/15/31 (a)		987,000		867,178
5 yr. CMT + 3.796% 4.700% VRN 10/15/51 (a)		3,060,000		2,929,551
6.750% 3/15/54 (a)		408,000		434,117
5 yr. CMT + 3.608% 7.950% VRN 10/15/54 (a)		678,000		707,718
Hill City Funding Trust
4.046% 8/15/41 (a)		2,400,000		1,982,850
Jackson National Life Global Funding
4.600% 10/01/29 (a) (f)		900,000		897,634
5.600% 4/10/26 (a)		1,392,000		1,411,975
Kemper Corp.
3.800% 2/23/32		875,000		795,381
Liberty Mutual Group, Inc. 5 yr. CMT + 3.315%
4.125% VRN 12/15/51 (a)		1,381,000		1,306,432
Markel Group, Inc.
6.000% 5/16/54		1,380,000		1,467,321
MetLife Capital Trust IV
7.875% 12/15/67 (a)		725,000		806,566
Pine Street Trust III
6.223% 5/15/54 (a)		1,615,000		1,750,736
Sammons Financial Group, Inc.
3.350% 4/16/31 (a)		3,805,000		3,317,118
4.450% 5/12/27 (a)		231,000		228,554
4.750% 4/08/32 (a)		805,000		756,987
USF&G Capital I
8.500% 12/15/45 (a)		885,000		917,563
Vitality Re XV Ltd. 3 mo. U.S. T-Bill Rate + 2.500%
7.102% FRN 1/08/29 (a)		3,016,000		3,012,381
				49,041,846
Internet — 0.1%
Netflix, Inc.
5.400% 8/15/54 (d)		503,000		532,485
Investment Companies — 3.3%
Antares Holdings LP
2.750% 1/15/27 (a)		1,275,000		1,194,006
3.950% 7/15/26 (a)		3,005,000		2,921,622
8.500% 5/18/25 (a)		720,000		730,200
ARES Capital Corp.
5.875% 3/01/29		990,000		1,013,786

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
ARES Strategic Income Fund
6.350% 8/15/29 (a)	$	1,918,000	$	1,960,633
Blackstone Private Credit Fund
2.625% 12/15/26		3,425,000		3,238,512
Blackstone Secured Lending Fund
2.750% 9/16/26		875,000		836,119
5.875% 11/15/27		720,000		732,124
Blue Owl Credit Income Corp.
4.700% 2/08/27		1,945,000		1,908,434
5.800% 3/15/30 (a)		1,625,000		1,609,541
Blue Owl Technology Finance Corp. II
6.750% 4/04/29 (a)		1,295,000		1,301,063
Golub Capital BDC, Inc.
2.500% 8/24/26		880,000		834,575
6.000% 7/15/29		1,322,000		1,343,249
HPS Corporate Lending Fund
6.250% 9/30/29 (a) (d)		1,115,000		1,135,095
				20,758,959
Lodging — 0.1%
Las Vegas Sands Corp.
6.200% 8/15/34		775,000		811,524
Media — 0.8%
Charter Communications Operating LLC/Charter Communications Operating Capital
2.300% 2/01/32		1,250,000		1,006,937
6.484% 10/23/45		1,485,000		1,432,571
Paramount Global
5 yr. CMT + 3.999% 6.375% VRN 3/30/62		836,000		773,288
6.875% 4/30/36		1,100,000		1,114,612
Time Warner Cable LLC
6.750% 6/15/39		985,000		986,432
				5,313,840
Mining — 0.1%
Anglo American Capital PLC
5.750% 4/05/34 (a)		971,000		1,013,649
Oil & Gas — 2.0%
BP Capital Markets PLC 5 yr. CMT + 2.153%
6.450% VRN (b) (d)		663,000		697,431
EQT Corp.
7.000% STEP 2/01/30		1,420,000		1,550,379
Helmerich & Payne, Inc.
5.500% 12/01/34 (a)		1,600,000		1,558,527
Occidental Petroleum Corp.
6.050% 10/01/54		1,598,000		1,622,371
Ovintiv, Inc.
6.500% 8/15/34		1,050,000		1,133,631
6.500% 2/01/38		545,000		584,017
7.100% 7/15/53		1,403,000		1,581,204
Patterson-UTI Energy, Inc.
3.950% 2/01/28		1,435,000		1,381,715
5.150% 11/15/29		1,225,000		1,209,698
Petroleos Mexicanos
5.350% 2/12/28		665,000		621,449
6.375% 1/23/45		595,000		414,736

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
6.500% 3/13/27	$	585,000	$	573,664
6.625% 6/15/35		140,000		114,311
				13,043,133
Oil & Gas Services — 0.2%
Nov, Inc.
3.950% 12/01/42		1,506,000		1,189,536
Pharmaceuticals — 0.9%
CVS Health Corp.
5.050% 3/25/48		455,000		415,292
5.875% 6/01/53		1,050,000		1,068,523
6.125% 9/15/39		560,000		590,468
CVS Pass-Through Trust
5.926% 1/10/34 (a)		815,385		829,043
7.507% 1/10/32 (a)		654,776		698,105
Utah Acquisition Sub, Inc.
5.250% 6/15/46		2,325,000		2,040,931
				5,642,362
Pipelines — 1.6%
Energy Transfer LP
5.950% 5/15/54		660,000		675,478
5 yr. CMT + 5.306% 7.125% VRN (b)		1,575,000		1,608,902
EnLink Midstream LLC
5.650% 9/01/34		921,000		951,645
EnLink Midstream Partners LP
5.050% 4/01/45		625,000		562,130
5.450% 6/01/47		1,125,000		1,063,871
Enterprise Products Operating LLC 3 mo. USD Term SOFR + 3.295%
5.250% VRN 8/16/77		1,250,000		1,232,995
Plains All American Pipeline LP 3 mo. USD Term SOFR + 4.372%
9.490% VRN (b)		2,345,000		2,334,897
Western Midstream Operating LP
5.450% 11/15/34		1,590,000		1,593,361
				10,023,279
Private Equity — 1.4%
Apollo Management Holdings LP 5 yr. CMT + 3.266%
4.950% VRN 1/14/50 (a)		1,505,000		1,493,713
Brookfield Finance, Inc.
5.968% 3/04/54		1,371,000		1,489,032
Hercules Capital, Inc.
2.625% 9/16/26		3,284,000		3,103,454
3.375% 1/20/27		1,745,000		1,661,350
KKR Group Finance Co. VIII LLC
3.500% 8/25/50 (a)		710,000		520,206
KKR Group Finance Co. X LLC
3.250% 12/15/51 (a)		1,271,000		896,845
				9,164,600
Real Estate Investment Trusts (REITS) — 3.4%
Agree LP
5.625% 6/15/34		550,000		575,371
Broadstone Net Lease LLC
2.600% 9/15/31		2,120,000		1,783,169

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
EPR Properties
3.600% 11/15/31	$	876,000	$	780,893
3.750% 8/15/29		675,000		631,203
4.500% 6/01/27		2,565,000		2,527,537
Equinix Europe 2 Financing Corp. LLC
5.500% 6/15/34 (d)		1,132,000		1,187,843
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (a)		2,625,000		2,446,999
Kimco Realty OP LLC
4.125% 12/01/46		460,000		379,753
4.450% 9/01/47		800,000		692,550
Omega Healthcare Investors, Inc.
3.625% 10/01/29		1,900,000		1,790,664
Piedmont Operating Partnership LP
2.750% 4/01/32		1,035,000		839,490
9.250% 7/20/28		772,000		864,007
Service Properties Trust
4.950% 10/01/29 (d)		1,155,000		917,388
Store Capital LLC
4.500% 3/15/28		2,075,000		2,036,106
4.625% 3/15/29		1,700,000		1,666,417
WEA Finance LLC
2.875% 1/15/27 (a)		2,420,000		2,314,555
				21,433,945
Semiconductors — 0.1%
Intel Corp.
5.600% 2/21/54		650,000		633,510
Software — 0.6%
Electronic Arts, Inc.
2.950% 2/15/51		1,100,000		759,223
Microsoft Corp.
2.921% 3/17/52		2,064,000		1,515,368
Oracle Corp.
5.375% 9/27/54		1,625,000		1,624,007
				3,898,598
Telecommunications — 0.9%
AT&T, Inc.
3.550% 9/15/55		3,953,000		2,891,361
Cisco Systems, Inc.
5.300% 2/26/54		248,000		263,125
Sprint Capital Corp.
8.750% 3/15/32		1,250,000		1,549,901
T-Mobile USA, Inc.
6.000% 6/15/54		974,000		1,073,139
				5,777,526

TOTAL CORPORATE DEBT (Cost $257,156,569)				253,016,250

NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 24.9%
Commercial Mortgage-Backed Securities — 8.2%
Bank, Series 2020-BN30, Class MCDF,
3.016% VRN 12/15/53 (g)		2,100,000		1,165,385

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Benchmark Mortgage Trust
Series 2021-B23, Class 360A, 2.852% VRN 2/15/54 (a) (g)	$	2,200,000	$	1,698,413
Series 2021-B23, Class 360B, 2.852% VRN 2/15/54 (a) (g)		3,587,000		2,559,900
Series 2021-B25, Class 300C, 3.094% VRN 4/15/54 (a) (g)		2,500,000		1,560,692
BGME Trust
Series 2021-VR, Class C, 3.094% VRN 1/10/43 (a) (g)		12,518,000		10,257,970
Series 2021-VR, Class D, 3.094% VRN 1/10/43 (a) (g)		2,800,000		2,194,605
BX Commercial Mortgage Trust, Series 2021-SOAR, Class E, 1 mo. USD Term SOFR + 1.914%
7.012% FRN 6/15/38 (a)		1,665,802		1,655,409
BX Trust, Series 2023-LIFE, Class C
5.884% 2/15/28 (a)		500,000		476,727
COLEM Mortgage Trust, Series 2022-HLNE, Class D,
2.543% VRN 4/12/42 (a) (g)		1,600,000		1,212,478
COMM Mortgage Trust
Series 2012-CR4, Class B, 3.703% 10/15/45 (a)		1,060,000		724,758
Series 2015-CR23, Class C, 4.408% VRN 5/10/48 (g)		1,000,000		944,390
Series 2014-LC17, Class C, 4.684% VRN 10/10/47 (g)		2,106,252		2,055,386
DROP Mortgage Trust
Series 2021-FILE, Class C, 1 mo. USD Term SOFR + 2.364% 7.462% FRN 10/15/43 (a)		2,629,000		2,330,935
Series 2021-FILE, Class D, 1 mo. USD Term SOFR + 2.864% 7.962% FRN 10/15/43 (a)		908,000		746,148
Extended Stay America Trust, Series 2021-ESH, Class D, 1 mo. USD Term SOFR + 2.364%
7.462% FRN 7/15/38 (a)		1,782,071		1,782,071
KIND Trust, Series 2021-KIND, Class C, 1 mo. USD Term SOFR + 1.864%
6.965% FRN 8/15/38 (a)		1,586,968		1,552,170
KREF Ltd.
Series 2021-FL2, Class B, 1 mo. USD Term SOFR + 1.764% 6.847% FRN 2/15/39 (a)		2,900,000		2,810,571
Series 2021-FL2, Class C, 1 mo. USD Term SOFR + 2.114% 7.197% FRN 2/15/39 (a)		5,000,000		4,826,468
Series 2021-FL2, Class D, 1 mo. USD Term SOFR + 2.314% 7.397% FRN 2/15/39 (a)		4,100,000		3,855,882
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD Term SOFR + 1.864%
6.962% FRN 3/15/38 (a)		1,534,715		1,487,795
MFT Mortgage Trust
Series 2020-ABC, Class A, 3.358% 2/10/42 (a)		919,000		623,496
Series 2020-ABC, Class B, 3.593% VRN 2/10/42 (a) (g)		2,253,000		1,416,800
MHC Commercial Mortgage Trust, Series 2021-MHC, Class D, 1 mo. USD Term SOFR + 1.715%
6.812% FRN 4/15/38 (a)		1,342,203		1,334,708
VASA Trust, Series 2021-VASA, Class D, 1 mo. USD Term SOFR + 2.214%
7.312% FRN 7/15/39 (a)		3,761,000		2,626,136
Wells Fargo Commercial Mortgage Trust, Series 2018-C45, Class B
4.556% 6/16/51		400,000		377,438
				52,276,731
Home Equity Asset-Backed Securities — 0.1%
Structured Asset Securities Corp. Mortgage Loan Trust, Series 2006-GEL1, Class M2, 1 mo. USD Term SOFR + 1.314%
6.169% FRN 11/25/35 (a)		443,281		441,062
Other Asset-Backed Securities — 11.4%
AASET Trust, Series 2021-2A, Class B
3.538% 1/15/47 (a)		772,504		694,007

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Anchorage Capital CLO 19 Ltd., Series 2021-19A, Class A, 3 mo. USD Term SOFR + 1.472%
6.773% FRN 10/15/34 (a)	$	2,000,000	$	2,000,866
Apidos CLO XLIV Ltd., Series 2023-44A, Class B, 3 mo. USD Term SOFR + 2.550%
7.829% FRN 4/26/35 (a)		1,750,000		1,755,056
Apidos CLO XLVIII Ltd., Series 2024-48A, Class A1, 3 mo. USD Term SOFR + 1.440%
6.755% FRN 7/25/37 (a)		2,000,000		2,006,048
Apidos CLO XXXII Ltd., Series 2019-32A, Class B1R, 3 mo. USD Term SOFR + 1.500%
6.782% FRN 1/20/33 (a)		1,250,000		1,250,531
ARES Loan Funding VI Ltd., Series 2024-ALF6A, Class A1, 3 mo. USD Term SOFR + 1.470%
6.789% FRN 7/10/37 (a)		1,000,000		1,002,650
Bain Capital Credit CLO Ltd., Series 2022-1A, Class A1, 3 mo. USD Term SOFR + 1.320%
6.599% FRN 4/18/35 (a)		750,000		750,187
Ballyrock CLO 26 Ltd., Series 2024-26A, Class A1A, 3 mo. USD Term SOFR + 1.510%
6.844% FRN 7/25/37 (a)		1,700,000		1,704,359
Benefit Street Partners CLO V-B Ltd., Series 2018-5BA, Class A1R, 3 mo. USD Term SOFR + 1.530%
6.827% FRN 7/20/37 (a)		2,000,000		2,013,544
Buttermilk Park CLO Ltd., Series 2018-1A, Class B1R, 3 mo. USD Term SOFR + 1.600%
6.901% FRN 10/15/31 (a)		2,000,000		2,002,674
Carlyle US CLO Ltd., Series 2021-6A, Class B, 3 mo. USD Term SOFR + 1.962%
7.263% FRN 7/15/34 (a)		1,400,000		1,402,569
CARS-DB4 LP
Series 2020-1A, Class A3, 3.250% 2/15/50 (a)		451,269		409,050
Series 2020-1A, Class A6, 3.810% 2/15/50 (a)		391,450		348,541
CAUTO, Series 2024-3A, Class A1
4.400% 10/15/54 (a) (f) (h)		1,000,000		983,209
CIFC Funding Ltd., Series 2019-6A, Class A1R, 3 mo. USD Term SOFR + 1.450%
6.778% FRN 7/16/37 (a)		2,650,000		2,656,736
Diameter Capital CLO 2 Ltd., Series 2021-2A, Class A1, 3 mo. USD Term SOFR + 1.482%
6.783% FRN 10/15/36 (a)		2,000,000		2,001,394
Eaton Vance CLO Ltd., Series 2020-2A, Class BR, 3 mo. USD Term SOFR + 1.962%
7.263% FRN 1/15/35 (a)		1,400,000		1,400,000
Flatiron CLO 20 Ltd., Series 2020-1A, Class BR, 3 mo. USD Term SOFR + 1.920%
7.048% FRN 5/20/36 (a)		500,000		501,111
Galaxy XXVI CLO Ltd., Series 2018-26A, Class BR, 3 mo. USD Term SOFR + 1.600%
6.721% FRN 11/22/31 (a)		1,000,000		1,000,571
GoldenTree Loan Management US CLO 11 Ltd., Series 2021-11A, Class A, 3 mo. USD Term SOFR + 1.392%
6.674% FRN 10/20/34 (a)		1,000,000		1,001,553
Goodgreen Trust
Series 2019-2A, Class A, 2.760% 4/15/55 (a)		1,431,697		1,262,262
Series 2017-1A, Class A, 3.740% 10/15/52 (a)		371,666		347,750
Series 2019-1A, Class A, 3.860% 10/15/54 (a)		621,686		579,276

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Harbor Park CLO 18-1 Ltd., Series 2018-1A, Class B1R, 3 mo. USD Term SOFR + 1.700%
6.982% FRN 1/20/31 (a)	$	1,290,000	$	1,290,645
Hero Funding Trust
Series 2016-3A, Class A1, 3.080% 9/20/42 (a)		293,100		265,940
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		338,154		301,458
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		98,597		88,445
Series 2016-4A, Class A1, 3.570% 9/20/47 (a)		380,079		349,012
Series 2017-2A, Class A2, 4.070% 9/20/48 (a)		79,264		72,995
Series 2018-1A, Class A2, 4.670% 9/20/48 (a)		596,709		564,348
Invesco CLO Ltd., Series 2021-3A, Class B, 3 mo. USD Term SOFR + 1.912%
7.194% FRN 10/22/34 (a)		2,000,000		2,002,950
Juniper Valley Park CLO Ltd., Series 2023-1A, Class BR, 3 mo. USD Term SOFR + 1.550%
6.832% FRN 7/20/36 (a)		1,350,000		1,351,459
Labrador Aviation Finance Ltd., Series 2016-1A, Class A1
4.300% 1/15/42 (a)		1,414,142		1,308,143
Madison Park Funding XXVIII Ltd., Series 2018-28A, Class B, 3 mo. USD Term SOFR + 1.862%
7.163% FRN 7/15/30 (a)		1,665,000		1,668,205
Marble Point CLO XIX Ltd., Series 2020-3A, Class AR, 3 mo. USD Term SOFR + 1.400%
6.680% FRN 1/19/34 (a)		2,250,000		2,252,545
Mariner Finance Issuance Trust
Series 2021-AA, Class B, 2.330% 3/20/36 (a)		1,336,000		1,262,275
Series 2021-AA, Class C, 2.960% 3/20/36 (a)		637,000		594,774
MidOcean Credit CLO XII Ltd., Series 2023-12A, Class CR, 3 mo. USD Term SOFR + 2.450%
7.729% FRN 4/18/36 (a)		700,000		702,206
MidOcean Credit CLO XIV Ltd., Series 2024-14A, Class A1, 3 mo. USD Term SOFR + 1.580%
6.881% FRN 4/15/37 (a)		1,000,000		1,005,520
Mosaic Solar Loan Trust, Series 2018-1A, Class A
4.010% 6/22/43 (a)		131,489		124,933
Mosaic Solar Loans LLC, Series 2017-1A, Class A
4.450% 6/20/42 (a)		115,446		113,011
Neuberger Berman CLO XX Ltd., Series 2015-20A, Class BRR, 3 mo. USD Term SOFR + 1.912%
7.213% FRN 7/15/34 (a)		1,800,000		1,802,986
Neuberger Berman Loan Advisers CLO 45 Ltd., Series 2021-45A, Class B, 3 mo. USD Term SOFR + 1.912%
7.213% FRN 10/14/35 (a)		1,350,000		1,353,241
NP SPE II LLC, Series 2017-1A, Class A2
4.219% 10/21/47 (a)		2,260,000		2,157,914
Oak Street Investment Grade Net Lease Fund, Series 2020-1A, Class A5
3.390% 11/20/50 (a)		1,195,000		1,127,409
OCP CLO Ltd.
Series 2018-15A, Class A1, 3 mo. USD Term SOFR + 1.362% 6.644% FRN 7/20/31 (a)		210,975		211,039
Series 2023-27A, Class BR, 3 mo. USD Term SOFR + 1.700% 7.024% FRN 7/16/35 (a)		1,750,000		1,751,752
Oxford Finance Funding LLC, Series 2020-1A, Class A2
3.101% 2/15/28 (a)		266,350		263,927
Parallel Ltd., Series 2021-2A, Class A2, 3 mo. USD Term SOFR + 2.112%
7.394% FRN 10/20/34 (a)		450,000		450,679

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Rad CLO 12 Ltd., Series 2021-12A, Class A, 3 mo. USD Term SOFR + 1.432%
6.687% FRN 10/30/34 (a)	$	1,000,000	$	1,002,319
Rockford Tower CLO Ltd., Series 2019-1A, Class B1R, 3 mo. USD Term SOFR + 1.812%
7.094% FRN 4/20/34 (a)		1,500,000		1,501,303
RR 19 Ltd., Series 2021-19A, Class A1, 3 mo. USD Term SOFR + 1.402%
6.703% FRN 10/15/35 (a)		1,000,000		1,001,286
RR 3 Ltd., Series 2018-3A, Class A1R2, 3 mo. USD Term SOFR + 1.352%
6.653% FRN 1/15/30 (a)		993,980		995,188
RR 7 Ltd., Series 2019-7A, Class A2B, 3 mo. USD Term SOFR + 1.850%
7.151% FRN 1/15/37 (a)		750,000		750,581
RRX 6 Ltd., Series 2021-6A, Class A2, 3 mo. USD Term SOFR + 2.012%
7.313% FRN 1/15/37 (a)		500,000		500,580
Sierra Timeshare Receivables Funding LLC, Series 2021-1A, Class D
3.170% 11/20/37 (a)		335,028		321,243
Silver Point CLO 2 Ltd., Series 2023-2A, Class A1, 3 mo. USD Term SOFR + 2.250%
7.532% FRN 4/20/35 (a)		1,500,000		1,510,350
Structured Receivables Finance LLC, Series 2010-B, Class A
3.730% 8/15/36 (a)		25,994		25,792
Sunnova Helios II Issuer LLC, Series 2018-1A, Class A
4.870% 7/20/48 (a)		374,362		340,845
Sunnova Hestia II Issuer LLC, Series 2024-GRID1, Class 1A
5.630% 7/20/51 (a)		1,070,961		1,102,421
Symphony CLO 42 Ltd., Series 2024-42A, Class A1, 3 mo. USD Term SOFR + 1.530%
6.837% FRN 4/17/37 (a)		2,000,000		2,009,362
Thrust Engine Leasing DAC
Series 2021-1A, Class A, 4.163% 7/15/40 (a)		2,347,366		2,245,354
Series 2021-1A, Class B, 6.121% 7/15/40 (a)		1,121,453		1,042,633
Series 2021-1A, Class C, 7.386% 7/15/40 (a)		442,487		401,813
TICP CLO XIV Ltd., Series 2019-14A, Class A2R, 3 mo. USD Term SOFR + 1.912%
7.194% FRN 10/20/32 (a)		1,000,000		1,000,806
Vivint Solar Financing V LLC, Series 2018-1A, Class B
7.370% 4/30/48 (a)		1,425,798		1,354,026
Voya CLO Ltd., Series 2021-3A, Class B, 3 mo. USD Term SOFR + 1.862%
7.144% FRN 1/20/35 (a)		500,000		500,342
WAVE Trust, Series 2017-1A, Class C
6.656% 11/15/42 (a)		2,403,935		697,366
Willis Engine Structured Trust IV, Series 2018-A, Class A,
4.750% STEP 9/15/43 (a)		477,889		473,059
				72,288,424
Student Loans Asset-Backed Securities — 2.5%
College Avenue Student Loans LLC
Series 2019-A, Class B, 3.810% 12/28/48 (a)		991,637		922,557
Series 2019-A, Class C, 4.460% 12/28/48 (a)		665,957		633,720
Edsouth Indenture No. 8 LLC, Series 2014-4, Class B, 30 day USD SOFR Average + 1.614%
6.895% FRN 6/25/48 (a)		1,200,000		1,203,834
Edsouth Indenture No. 9 LLC, Series 2015-1, Class B, 30 day USD SOFR Average + 1.614%
6.895% FRN 10/25/56 (a)		1,100,000		1,064,880
EDvestinU Private Education Loan Issue No. 1 LLC, Series 2019-A, Class A
3.580% 11/25/38 (a)		374,434		362,373
Higher Education Funding I

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2004-1, Class B1, 5.784% FRN 1/01/44 (a) (g)	$	450,000	$	387,252
Series 2004-1, Class B2, 5.793% FRN 1/01/44 (a) (g)		450,000		387,149
Nelnet Student Loan Trust
Series 2019-5, Class B, 3.450% 10/25/67 (a)		2,150,000		1,735,159
Series 2005-4, Class A4R1, 6.448% FRN 3/22/32 (g)		110,000		109,228
Series 2019-1A, Class B, 30 day USD SOFR Average + 1.514% 6.795% FRN 4/25/67 (a)		3,250,000		3,111,089
SLM Student Loan Trust
Series 2006-5, Class B, 90 day USD SOFR Average + 0.472% 5.831% FRN 10/25/40		1,454,838		1,363,285
Series 2005-6, Class B, 90 day USD SOFR Average + 0.552% 5.911% FRN 1/25/44		932,336		888,071
SMB Private Education Loan Trust, Series 2024-E, Class B
5.710% 10/16/56 (a)		2,500,000		2,510,931
SoFi Alternative Trust, Series 2019-C, Class PT,
5.240% VRN 1/25/45 (a) (g)		1,303,622		1,288,740
				15,968,268
Whole Loan Collateral Collateralized Mortgage Obligations — 2.5%
Banc of America Mortgage Trust, Series 2004-G, Class 2A7,
6.643% VRN 8/25/34 (g)		3,441		3,427
Credit Suisse Mortgage Trust, Series 2021-NQM3, Class M1,
2.317% VRN 4/25/66 (a) (g)		1,330,000		978,086
Flagstar Mortgage Trust, Series 2021-6INV, Class A18,
2.500% VRN 8/25/51 (a) (g)		3,415,002		2,842,322
GS Mortgage-Backed Securities Trust, Series 2021-GR2, Class A2,
2.500% VRN 2/25/52 (a) (g)		1,881,829		1,581,545
New Residential Mortgage Loan Trust, Series 2021-INV1, Class A4,
2.500% VRN 6/25/51 (a) (g)		2,208,826		1,838,416
NMLT Trust, Series 2021-INV1, Class M1,
2.711% VRN 5/25/56 (a) (g)		5,400,000		4,149,709
Starwood Mortgage Residential Trust, Series 2021-3, Class M1,
2.491% VRN 6/25/56 (a) (g)		2,448,000		1,818,921
Verus Securitization Trust, Series 2021-3, Class M1,
2.397% VRN 6/25/66 (a) (g)		3,640,000		2,672,768
Wells Fargo Mortgage-Backed Securities Trust, Series 2019-1, Class A1,
3.925% VRN 11/25/48 (a) (g)		21,824		21,105
				15,906,299
Whole Loan Collateral Support Collateralized Mortgage Obligations — 0.2%
GS Mortgage-Backed Securities Trust, Series 2021-GR2, Class A4,
2.500% VRN 2/25/52 (a) (g)		1,249,848		1,040,255

TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $175,187,388)				157,921,039

SOVEREIGN DEBT OBLIGATIONS — 0.2%
Mexico Government International Bond
4.750% 3/08/44		1,652,000		1,397,226

TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $1,645,899)				1,397,226

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (i) — 31.5%
Collateralized Mortgage Obligations — 0.0%
Federal Home Loan Mortgage Corp. REMICS Series 2178, Class PB 7.000% 8/15/29	$	8,727	$	9,048
Pass-Through Securities — 31.5%
Federal Home Loan Mortgage Corp.
Pool #RA4245 2.000% 12/01/50		1,940,402		1,625,802
Pool #RA4255 2.000% 1/01/51		3,944,910		3,310,248
Pool #RA5576 2.500% 7/01/51		7,012,951		6,124,636
Pool #SD0905 3.000% 3/01/52		3,040,508		2,745,460
Pool #J13972 3.500% 1/01/26		2,266		2,248
Pool #C91344 3.500% 11/01/30		27,082		26,702
Pool #C91424 3.500% 1/01/32		18,500		18,216
Pool #RA2483 3.500% 6/01/50		3,320,587		3,118,049
Pool #SD1523 4.000% 8/01/52		4,740,408		4,592,281
Pool #SD1603 4.000% 9/01/52		3,069,903		2,960,545
Pool #C91239 4.500% 3/01/29		1,189		1,194
Pool #C91251 4.500% 6/01/29		8,323		8,364
Pool #SD8266 4.500% 11/01/52		1,793,236		1,763,378
Pool #C90939 5.500% 12/01/25		1,603		1,622
Pool #D97258 5.500% 4/01/27		992		1,003
Pool #C91026 5.500% 4/01/27		5,373		5,437
Pool #C91074 5.500% 8/01/27		600		608
Pool #D97417 5.500% 10/01/27		4,503		4,578
Pool #C91128 5.500% 12/01/27		457		465
Pool #C91148 5.500% 1/01/28		13,418		13,634
Pool #C91176 5.500% 5/01/28		5,163		5,263
Pool #C91217 5.500% 11/01/28		2,314		2,358
Pool #SD4364 5.500% 10/01/53		5,195,721		5,292,511
Federal National Mortgage Association
Pool #CB0414 2.500% 5/01/51		5,843,062		5,099,283
Pool #FM8596 2.500% 9/01/51		1,855,647		1,620,597
Pool #FM9104 2.500% 10/01/51		5,392,018		4,705,653
Pool #FM9227 2.500% 10/01/51		3,911,276		3,401,176
Pool #FS3035 2.500% 4/01/52		8,209,180		7,182,168
Pool #MA3029 3.000% 6/01/32		828,199		806,953
Pool #MA3090 3.000% 8/01/32		341,997		333,033
Pool #AO8180 3.000% 9/01/42		8,562		7,951
Pool #AB7397 3.000% 12/01/42		55,173		51,200
Pool #AB7401 3.000% 12/01/42		44,279		41,134
Pool #AP8668 3.000% 12/01/42		65,993		61,222
Pool #AR1975 3.000% 12/01/42		12,516		11,628
Pool #AR0306 3.000% 1/01/43		3,608		3,349
Pool #AR5391 3.000% 1/01/43		14,963		13,870
Pool #AL3215 3.000% 2/01/43		43,087		39,978
Pool #AR4109 3.000% 2/01/43		50,182		46,517
Pool #AR4432 3.000% 3/01/43		20,266		18,791
Pool #AT0169 3.000% 3/01/43		97,338		90,278
Pool #AB8809 3.000% 3/01/43		22,754		21,121
Pool #MA1368 3.000% 3/01/43		85,431		79,246
Pool #AR2174 3.000% 4/01/43		84,644		78,485
Pool #FS1075 3.000% 3/01/52		3,110,270		2,826,009
Pool #CB3304 3.000% 4/01/52		4,799,703		4,361,037
Pool #CB3305 3.000% 4/01/52		5,782,028		5,246,355
Pool #AS1304 3.500% 12/01/28		259,242		256,141
Pool #MA1356 3.500% 2/01/43		3,096,251		2,947,317

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #CA6096 3.500% 6/01/50	$	3,686,707	$	3,437,644
Pool #FM4017 3.500% 8/01/50		242,701		227,898
Pool #CB3842 3.500% 6/01/52		9,458,760		8,876,654
Pool #AA3980 4.500% 4/01/28		7,091		7,059
Pool #CA1909 4.500% 6/01/48		1,685,389		1,681,554
Pool #CB3866 4.500% 6/01/52		5,310,488		5,255,257
Pool #CB4129 4.500% 7/01/52		4,780,409		4,711,271
Pool #AD6437 5.000% 6/01/40		146,069		149,949
Pool #AD6996 5.000% 7/01/40		921,760		946,582	��
Pool #AL8173 5.000% 2/01/44		372,203		382,562
Pool #AD0836 5.500% 11/01/28		11,205		11,374
Government National Mortgage Association
Pool #491089 7.000% 12/15/28		504		503
Pool #480539 7.000% 4/15/29		46		47
Pool #488634 7.000% 5/15/29		1,005		1,026
Pool #500928 7.000% 5/15/29		1,859		1,907
Pool #510083 7.000% 7/15/29		96		98
Pool #493723 7.000% 8/15/29		1,417		1,457
Pool #581417 7.000% 7/15/32		2,388		2,436
Government National Mortgage Association II
Pool #MA6038 3.000% 7/20/49		1,798,915		1,648,093
Pool #MA6283 3.000% 11/20/49		3,262,445		2,986,880
Pool #MA6409 3.000% 1/20/50		3,367,361		3,082,934
Pool #MA4321 3.500% 3/20/47		2,011,161		1,908,884
Pool #8746 1 yr. CMT + 1.500% 3.750% FRN 11/20/25		331		329
Pool #80136 1 yr. CMT + 1.500% 3.750% FRN 11/20/27		183		182
Pool #MA8429 5.500% 11/20/52		5,127,429		5,184,401
Government National Mortgage Association II, TBA
2.500% 10/20/54 (f)		13,050,000		11,494,906
3.000% 10/20/54 (f)		9,125,000		8,321,745
3.500% 10/20/54 (f)		5,770,000		5,423,698
4.500% 10/20/54 (f)		2,000,000		1,974,528
5.000% 10/20/54 (f)		10,000,000		10,018,441
Uniform Mortgage-Backed Security, TBA
2.000% 10/01/54 (f)		6,925,000		5,726,109
3.500% 10/01/54 (f)		2,000,000		1,863,047
4.000% 10/01/54 (f)		4,650,000		4,465,635
5.000% 10/01/54 (f)		19,600,000		19,584,688
5.500% 10/01/54 (f)		13,400,000		13,556,508
6.000% 10/01/54 (f)		6,000,000		6,131,485
				200,042,865

TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $206,861,194)				200,051,913

U.S. TREASURY OBLIGATIONS — 2.8%
U.S. Treasury Bonds & Notes — 2.8%
U.S. Treasury Bonds
2.250% 8/15/49 (j)		12,500,000		8,656,455

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
U.S. Treasury Notes
1.375% 10/31/28	$	10,300,000	$	9,442,308
				18,098,763

TOTAL U.S. TREASURY OBLIGATIONS (Cost $17,519,991)				18,098,763

TOTAL BONDS & NOTES (Cost $658,371,041)				630,485,191

TOTAL LONG-TERM INVESTMENTS (Cost $658,371,041)				630,485,191


SHORT-TERM INVESTMENTS — 15.4%
Commercial Paper — 14.2%
Alimentation Couche-Tard, Inc.
5.039% 10/11/24 (a)		7,500,000		7,488,514
American Honda Finance Corp.
5.012% 11/12/24		5,000,000		4,970,330
Avangrid, Inc.
5.025% 11/04/24 (a)		8,000,000		7,960,616
CRH America Finance, Inc.
5.676% 10/07/24 (a)		8,000,000		7,992,331
EIDP, Inc.
5.753% 12/02/24 (a)		1,000,000		991,616
Evergy Kansas Central, Inc.
4.959% 10/01/24 (a)		7,000,000		6,999,045
Magna International, Inc.
5.026% 10/29/24 (a)		10,000,000		9,959,746
Microchip Technology, Inc.
5.460% 10/18/24 (a)		7,000,000		6,982,169
Mosaic Co.
5.054% 10/15/24 (a)		2,000,000		1,995,855
NextEra Energy Capital Holdings, Inc.
5.631% 10/04/24 (a)		5,000,000		4,997,260
Penske Truck Leasing Co. LP
5.665% 10/15/24		13,000,000		12,972,516
Volkswagen Financial Services
5.040% 10/23/24 (a)		10,000,000		9,968,146
Walt Disney Co.
5.577% 10/28/24 (a)		3,000,000		2,988,565
WRKCo, Inc.
5.402% 10/03/24 (a)		4,000,000		3,998,361
				90,265,070

	Number of Shares
Investment of Cash Collateral from Securities Loaned — 0.9%
State Street Navigator Securities Lending Government Money Market Portfolio (k)		5,475,695		5,475,695

	Principal Amount
Repurchase Agreement — 0.3%
Fixed Income Clearing Corp., Repurchase Agreement, dated 9/30/24, 1.520%, due 10/01/24 (l)	$	1,937,818		1,937,818

MML Managed Bond Fund — Portfolio of Investments (Continued)

	Principal Amount	Value
TOTAL SHORT-TERM INVESTMENTS (Cost $97,686,812)		$	97,678,583

TOTAL INVESTMENTS — 114.6% (Cost $756,057,853) (m)			728,163,774

Other Assets/(Liabilities) — (14.6)%			(92,873,762)

NET ASSETS — 100.0%		$	635,290,012

Abbreviation Legend

CLO	Collateralized Loan Obligation

CMT	Constant Maturity Treasury Index

FRN	Floating Rate Note

ICE	Inter-Continental Exchange

LIBOR

London InterBank Offered Rate

REMICS

Real Estate Mortgage Investment Conduits

SOFR	Secured Overnight Financing Rate

STEP	Step Coupon Bond

TBA	To Be Announced

VRN	Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)

(b)	Security is perpetual and has no stated maturity date.

(c)	Restricted security. Certain securities are restricted to resale. At September 30, 2024, these securities amounted to a value of $4,501,925 or 0.71% of net assets. The Fund generally bears the costs, if any, associated with the disposition of restricted securities.

(d)

Denotes all or a portion of security on loan. The total value of securities on loan as of September 30, 2024, was $6,598,744 or 1.04% of net assets. The Fund received $1,270,040 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(e)	Security is currently in default due to bankruptcy or failure to make payment of principal or interest of the issuer. Income is not being accrued. At September 30, 2024, these securities amounted to a value of $372 or 0.00% of net assets.

(f)	A portion of this security is purchased on a when-issued, delayed-delivery or forward commitment basis.

(g)

(h)	This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At September 30, 2024, these securities amounted to a value of $983,209 or 0.15% of net assets.

(i)	May contain securities that are issued by a U.S. Government Agency, but are unsecured and are not guaranteed by a U.S. Government Agency.

(j)	All or a portion of this security is pledged/held as collateral for open derivatives.

(k)	Represents investment of security lending cash collateral. (Note 2).

(l)	Maturity value of $1,937,900. Collateralized by U.S. Government Agency obligations with a rate of 4.875%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $1,976,681.

(m)	See Note 3 for aggregate cost for federal tax purposes.

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/Net Unrealized Appreciation (Depreciation)
Long
U.S. Treasury Long Bond	12/19/24		231	$	28,820,413	$	(133,100)
U.S. Treasury Ultra 10 Year	12/19/24		37		4,372,369		4,615
U.S. Treasury Ultra Bond	12/19/24		91		12,202,842		(91,311)
U.S. Treasury Note 2 Year	12/31/24		79		16,434,120		17,013
U.S. Treasury Note 5 Year	12/31/24		337		36,995,380		35,128
						$	(167,655)
Short
U.S. Treasury Ultra 10 Year	12/19/24		27	$	(3,183,749)	$	(10,267)

MML Short-Duration Bond Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 86.4%

CORPORATE DEBT — 45.9%
Aerospace & Defense — 0.5%
Boeing Co.
6.298% 5/01/29 (a)	$	615,000	$	647,034
Agriculture — 0.2%
Imperial Brands Finance PLC
5.500% 2/01/30 (a)		218,000		225,048
Auto Manufacturers — 1.3%
Ford Motor Credit Co. LLC
5.303% 9/06/29		295,000		293,611
General Motors Financial Co., Inc.
5.800% 1/07/29		305,000		317,233
Hyundai Capital America
6.100% 9/21/28 (a)		305,000		321,768
Nissan Motor Acceptance Co. LLC
1.850% 9/16/26 (a)		685,000		641,979
				1,574,591
Auto Parts & Equipment — 0.1%
BorgWarner, Inc.
4.950% 8/15/29 (b)		109,000		110,814
Banks — 9.2%
ABN AMRO Bank NV
4.750% 7/28/25 (a)		625,000		622,220
1 yr. CMT + 1.550% 6.575% VRN 10/13/26 (a)		300,000		305,406
ANB Sukuk Ltd. 5 yr. CMT + 2.974%
3.326% VRN 10/28/30 (a)		650,000		635,245
Bank Negara Indonesia Persero Tbk. PT
5.280% 4/05/29 (a)		350,000		357,913
Bank of America Corp.
3.950% 4/21/25		178,000		177,115
Barclays PLC
5.200% 5/12/26		305,000		306,903
1 day USD SOFR + 1.740% 5.690% VRN 3/12/30		295,000		306,873
BPCE SA, (Acquired 10/10/23, Cost $500,000), 1 day USD SOFR + 1.980%
6.612% VRN 10/19/27 (a) (c)		500,000		519,055
Credit Agricole SA 1 day USD SOFR + 1.860%
6.316% VRN 10/03/29 (a)		375,000		398,750
Danske Bank AS
1 yr. CMT + 0.730% 1.549% VRN 9/10/27 (a)		485,000		459,818
1 yr. CMT + 2.100% 6.466% VRN 1/09/26 (a)		275,000		275,911
Discover Bank 5 yr. USD SOFR ICE Swap Rate + 1.730%
5.974% VRN 8/09/28		450,000		464,678
HDFC Bank Ltd.
5.196% 2/15/27 (a)		250,000		253,658
HSBC Holdings PLC

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
1 day USD SOFR + 1.430% 2.999% VRN 3/10/26	$	430,000	$	425,990
1 day USD SOFR + 3.350% 7.390% VRN 11/03/28		310,000		335,605
ING Groep NV 1 day USD SOFR + 1.440%
5.335% VRN 3/19/30		295,000		305,326
JP Morgan Chase & Co. 1 day USD SOFR + 0.765%
1.470% VRN 9/22/27		445,000		421,498
Macquarie Group Ltd. 1 day USD SOFR + 1.069%
1.340% VRN 1/12/27 (a)		845,000		810,482
Morgan Stanley
1 day USD SOFR + 1.610% 4.210% VRN 4/20/28		245,000		244,502
4.350% 9/08/26		400,000		400,960
NatWest Group PLC 1 yr. CMT + 0.900%
1.642% VRN 6/14/27		345,000		328,856
Santander UK Group Holdings PLC 1 day USD SOFR Index + 1.554%
4.858% VRN 9/11/30		310,000		312,462
Societe Generale SA
1 yr. CMT + 1.100% 1.488% VRN 12/14/26 (a)		525,000		502,860
1 yr. CMT + 1.300% 2.797% VRN 1/19/28 (a)		200,000		191,085
Synovus Bank
5.625% 2/15/28		523,000		525,827
Truist Financial Corp. 1 day USD SOFR + 2.446%
7.161% VRN 10/30/29		305,000		334,318
UBS Group AG 1 yr. CMT + 1.080%
1.364% VRN 1/30/27 (a)		400,000		382,914
Wells Fargo & Co. 1 day USD SOFR + 1.740%
5.574% VRN 7/25/29		310,000		322,525
				10,928,755
Beverages — 0.6%
Bacardi Ltd.
4.450% 5/15/25 (a)		378,000		376,316
JDE Peet's NV
1.375% 1/15/27 (a)		407,000		379,989
				756,305
Chemicals — 1.7%
Celanese US Holdings LLC
6.165% 7/15/27		200,000		207,241
6.350% 11/15/28		305,000		322,027
MEGlobal Canada ULC
5.000% 5/18/25 (a)		450,000		449,437
Orbia Advance Corp. SAB de CV
1.875% 5/11/26 (a)		657,000		622,014
Yara International ASA
4.750% 6/01/28 (a)		450,000		448,660
				2,049,379
Commercial Services — 1.1%
Element Fleet Management Corp.
5.643% 3/13/27 (a)		356,000		365,072
Triton Container International Ltd.
2.050% 4/15/26 (a)		950,000		908,647
				1,273,719

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Computers — 0.8%
Genpact Luxembourg SARL/Genpact USA, Inc.
6.000% 6/04/29	$	577,000	$	604,247
Kyndryl Holdings, Inc.
2.700% 10/15/28		350,000		324,162
				928,409
Diversified Financial Services — 1.8%
Ally Financial, Inc. 1 day USD SOFR + 3.260%
6.992% VRN 6/13/29		275,000		290,706
Avolon Holdings Funding Ltd.
4.250% 4/15/26 (a)		325,000		321,638
5.750% 11/15/29 (a)		305,000		314,796
BGC Group, Inc.
4.375% 12/15/25		505,000		500,215
LeasePlan Corp. NV
2.875% 10/24/24 (a)		280,000		279,541
Macquarie Airfinance Holdings Ltd.
6.400% 3/26/29 (a)		74,000		77,019
REC Ltd.
2.250% 9/01/26 (a)		400,000		382,467
				2,166,382
Electric — 1.4%
Adani Transmission Step-One Ltd.
4.000% 8/03/26 (a)		350,000		339,455
Alliant Energy Finance LLC
1.400% 3/15/26 (a)		260,000		247,406
Engie SA
5.250% 4/10/29 (a)		600,000		619,925
FirstEnergy Pennsylvania Electric Co.
5.150% 3/30/26 (a)		226,000		227,977
Pacific Gas & Electric Co.
5.550% 5/15/29		275,000		285,652
				1,720,415
Engineering & Construction — 0.1%
MasTec, Inc.
5.900% 6/15/29		148,000		154,452
Entertainment — 0.6%
Warnermedia Holdings, Inc.
4.054% 3/15/29		750,000		710,501
Food — 1.6%
JBS USA Holding Lux SARL/JBS USA Food Co./JBS Lux Co. SARL
2.500% 1/15/27		860,000		822,786
The Kroger Co.
4.650% 9/15/29		308,000		309,701
Smithfield Foods, Inc.
4.250% 2/01/27 (a)		775,000		762,135
				1,894,622

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Forest Products & Paper — 0.6%
Suzano International Finance BV
4.000% 1/14/25	$	700,000	$	696,894
Hand & Machine Tools — 0.5%
Regal Rexnord Corp.
6.050% 2/15/26		325,000		330,014
6.050% 4/15/28		300,000		311,916
				641,930
Home Furnishing — 0.2%
LG Electronics, Inc.
5.625% 4/24/27 (a)		200,000		205,520
Housewares — 0.2%
Newell Brands, Inc.
6.375% 9/15/27 (b)		200,000		202,281
Insurance — 4.3%
Athene Global Funding
2.500% 1/14/25 (a)		420,000		416,718
3.205% 3/08/27 (a)		212,000		203,400
Brighthouse Financial Global Funding
5.650% 6/10/29 (a)		275,000		284,060
CNO Global Funding
1.750% 10/07/26 (a)		714,000		676,460
2.650% 1/06/29 (a)		350,000		320,293
Enstar Group Ltd.
4.950% 6/01/29		625,000		628,456
GA Global Funding Trust
2.250% 1/06/27 (a)		685,000		652,154
Jackson National Life Global Funding
4.600% 10/01/29 (a) (d)		155,000		154,593
Lincoln National Corp., (Acquired 4/19/23, Cost $310,303),
3.800% 3/01/28 (b) (c)		350,000		343,594
RGA Global Funding
5.448% 5/24/29 (a)		381,000		396,643
Sammons Financial Group, Inc.
4.450% 5/12/27 (a)		1,063,000		1,051,744
				5,128,115
Investment Companies — 5.3%
Antares Holdings LP
2.750% 1/15/27 (a)		310,000		290,307
3.950% 7/15/26 (a)		605,000		588,213
ARES Capital Corp.
2.875% 6/15/28		250,000		230,589
5.875% 3/01/29		100,000		102,403
5.950% 7/15/29		305,000		313,066
ARES Strategic Income Fund
6.350% 8/15/29 (a)		538,000		549,959
Blackstone Private Credit Fund
2.625% 12/15/26		490,000		463,320
Blackstone Secured Lending Fund
2.750% 9/16/26		350,000		334,448
5.875% 11/15/27		139,000		141,341

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Blue Owl Credit Income Corp.
4.700% 2/08/27	$	650,000	$	637,780
Blue Owl Technology Finance Corp. II
6.750% 4/04/29 (a)		627,000		629,936
Golub Capital BDC, Inc.
2.500% 8/24/26		270,000		256,063
6.000% 7/15/29		621,000		630,981
HPS Corporate Lending Fund
6.250% 9/30/29 (a) (b)		305,000		310,497
6.750% 1/30/29 (a)		368,000		381,175
Sixth Street Specialty Lending, Inc.
3.875% 11/01/24		410,000		409,336
				6,269,414
Lodging — 0.4%
Las Vegas Sands Corp.
6.000% 8/15/29		516,000		536,229
Machinery - Construction & Mining — 0.5%
Weir Group PLC
2.200% 5/13/26 (a)		680,000		654,036
Media — 1.2%
CCO Holdings LLC/CCO Holdings Capital Corp.
5.125% 5/01/27 (a) (b)		350,000		344,476
Charter Communications Operating LLC/Charter Communications Operating Capital
2.250% 1/15/29		475,000		422,919
Paramount Global
3.700% 6/01/28		675,000		640,467
				1,407,862
Mining — 0.5%
Indonesia Asahan Aluminium PT/Mineral Industri Indonesia Persero PT
4.750% 5/15/25 (a)		550,000		548,673
Office & Business Equipment — 0.3%
CDW LLC/CDW Finance Corp.
5.100% 3/01/30		295,000		298,991
Oil & Gas — 2.0%
Helmerich & Payne, Inc.
4.850% 12/01/29 (a)		585,000		577,000
Occidental Petroleum Corp.
5.200% 8/01/29		295,000		299,897
Ovintiv, Inc.
5.375% 1/01/26		275,000		276,835
Parkland Corp.
5.875% 7/15/27 (a)		193,000		192,503
Patterson-UTI Energy, Inc.
3.950% 2/01/28		685,000		659,564
QatarEnergy LNG S3
5.838% 9/30/27 (a)		411,450		417,222
				2,423,021

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Packaging & Containers — 0.3%
Smurfit Kappa Treasury ULC
5.200% 1/15/30 (a)	$	290,000	$	299,589
Pharmaceuticals — 1.3%
Bayer US Finance II LLC
4.375% 12/15/28 (a)		325,000		320,749
Hikma Finance USA LLC
3.250% 7/09/25 (a)		675,000		664,372
Viatris, Inc.
2.300% 6/22/27		650,000		612,473
				1,597,594
Pipelines — 1.0%
Columbia Pipelines Holding Co. LLC
6.055% 8/15/26 (a)		280,000		286,837
Enbridge, Inc.
5.300% 4/05/29		300,000		310,630
EQM Midstream Partners LP
5.500% 7/15/28		300,000		304,022
Harvest Midstream I LP
7.500% 9/01/28 (a)		234,000		239,458
				1,140,947
Private Equity — 0.7%
Hercules Capital, Inc.
2.625% 9/16/26		560,000		529,213
3.375% 1/20/27		270,000		257,057
				786,270
Real Estate Investment Trusts (REITS) — 4.3%
CubeSmart LP
2.250% 12/15/28		390,000		358,672
EPR Properties
3.750% 8/15/29		125,000		116,890
4.500% 6/01/27		650,000		640,507
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (a) (b)		335,000		312,284
GLP Capital LP/GLP Financing II, Inc.
5.375% 4/15/26		348,000		349,410
Omega Healthcare Investors, Inc.
4.750% 1/15/28		779,000		777,685
Piedmont Operating Partnership LP
9.250% 7/20/28		575,000		643,528
Store Capital LLC
4.500% 3/15/28		650,000		637,816
Sun Communities Operating LP
5.500% 1/15/29		295,000		303,663
VICI Properties LP/VICI Note Co., Inc.
3.750% 2/15/27 (a)		325,000		316,978
Vornado Realty LP
2.150% 6/01/26		310,000		295,182
WEA Finance LLC
3.500% 6/15/29 (a)		350,000		328,229
				5,080,844

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Retail — 0.1%
Advance Auto Parts, Inc.
5.900% 3/09/26	$	144,000	$	145,486
Savings & Loans — 0.2%
Nationwide Building Society
4.000% 9/14/26 (a)		260,000		256,300
Semiconductors — 0.4%
Intel Corp.
3.750% 3/25/27		250,000		245,634
SK Hynix, Inc.
5.500% 1/16/27 (a)		200,000		204,250
				449,884
Software — 0.1%
Take-Two Interactive Software, Inc.
5.400% 6/12/29		85,000		88,078
Telecommunications — 0.5%
Tower Bersama Infrastructure Tbk. PT
4.250% 1/21/25 (a)		645,000		642,904

TOTAL CORPORATE DEBT (Cost $54,398,805)				54,641,288

NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 39.9%
Automobile Asset-Backed Securities — 6.9%
American Credit Acceptance Receivables Trust, Series 2022-1, Class D
2.460% 3/13/28 (a)		1,214,854		1,201,687
Avis Budget Rental Car Funding AESOP LLC, Series 2019-3A, Class C
3.150% 3/20/26 (a)		1,083,000		1,074,641
Carmax Auto Owner Trust, Series 2021-4, Class D
1.480% 3/15/28		250,000		238,536
Carvana Auto Receivables Trust
Series 2021-N1, Class D, 1.500% 1/10/28		175,892		169,202
Series 2021-P3, Class D, 2.250% 9/11/28		855,000		778,538
Exeter Automobile Receivables Trust
Series 2021-2A, Class D, 1.400% 4/15/27		866,600		843,058
Series 2024-3A, Class B, 5.570% 9/15/28		500,000		507,570
FCCU Auto Receivables Trust, Series 2024-1A, Class A4
5.460% 4/15/30 (a)		500,000		516,690
Ford Credit Floorplan Master Owner Trust A, Series 2023-1, Class B
5.310% 5/15/28 (a)		400,000		403,895
LAD Auto Receivables Trust, Series 2024-2A, Class B
5.500% 7/16/29 (a)		500,000		512,603
PenFed Auto Receivables Owner Trust, Series 2024-A, Class C
5.200% 9/16/30 (a)		300,000		302,221
Santander Revolving Auto Loan Trust, Series 2019-A, Class D
3.450% 1/26/32 (a)		215,000		218,970
Westlake Automobile Receivables Trust, Series 2022-2A, Class D
5.480% 9/15/27 (a)		1,400,000		1,408,620
				8,176,231

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Commercial Mortgage-Backed Securities — 5.4%
BAMLL Commercial Mortgage Securities Trust, Series 2019-BPR, Class CMP,
4.024% VRN 11/05/32 (a) (e)	$	370,000	$	344,115
BHMS Mortgage Trust, Series 2018-ATLS, Class B, 1 mo. USD Term SOFR + 1.797%
6.894% FRN 7/15/35 (a)		500,000		496,251
BX Commercial Mortgage Trust, Series 2021-SOAR, Class E, 1 mo. USD Term SOFR + 1.914%
7.012% FRN 6/15/38 (a)		286,693		284,905
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class E, 1 mo. USD Term SOFR + 2.447%
7.544% FRN 12/15/37 (a)		545,194		544,513
ELM Trust, Series 2024-ELM, Class A15,
5.994% VRN 6/10/39 (a) (e)		1,100,000		1,123,029
KIND Trust, Series 2021-KIND, Class B, 1 mo. USD Term SOFR + 1.464%
6.565% FRN 8/15/38 (a)		545,520		533,844
KREF Ltd., Series 2021-FL2, Class AS, 1 mo. USD Term SOFR + 1.414%
6.497% FRN 2/15/39 (a)		900,000		881,160
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD Term SOFR + 1.864%
6.962% FRN 3/15/38 (a)		295,046		286,026
MHC Commercial Mortgage Trust, Series 2021-MHC, Class E, 1 mo. USD Term SOFR + 2.215%
7.312% FRN 4/15/38 (a)		520,104		517,200
One New York Plaza Trust
Series 2020-1NYP, Class C, 1 mo. USD Term SOFR + 2.314% 7.412% FRN 1/15/36 (a)		616,000		572,221
Series 2020-1NYP, Class D, 1 mo. USD Term SOFR + 2.864% 7.962% FRN 1/15/36 (a)		414,000		358,869
VASA Trust, Series 2021-VASA, Class D, 1 mo. USD Term SOFR + 2.214%
7.312% FRN 7/15/39 (a)		711,000		496,459
				6,438,592
Home Equity Asset-Backed Securities — 0.1%
Residential Asset Mortgage Products Trust, Series 2005-EFC1, Class M5, 1 mo. USD Term SOFR + 0.764%
5.944% FRN 5/25/35		59,585		59,176
Structured Asset Securities Corp. Mortgage Loan Trust, Series 2006-GEL1, Class M2, 1 mo. USD Term SOFR + 1.314%
6.169% FRN 11/25/35 (a)		32,435		32,273
				91,449
Other Asset-Backed Securities — 16.2%
Apidos CLO XXVI Ltd., Series 2017-26A, Class A2R, 3 mo. USD Term SOFR + 1.762%
7.041% FRN 7/18/29 (a)		500,000		500,153
Apidos CLO XXX Ltd., Series XXXA, Class A2R, 3 mo. USD Term SOFR + 1.500%
6.695% FRN 10/18/31 (a)		500,000		500,347
Aqua Finance Trust, Series 2021-A, Class A
1.540% 7/17/46 (a)		608,010		561,158
Bain Capital Credit CLO Ltd., Series 2022-1A, Class A1, 3 mo. USD Term SOFR + 1.320%
6.599% FRN 4/18/35 (a)		500,000		500,125
BHG Securitization Trust

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2021-B, Class C, 2.240% 10/17/34 (a)	$	448,000	$	415,786
Series 2022-C, Class A, 5.320% 10/17/35 (a)		93,476		93,469
BlueMountain Fuji US CLO I Ltd., Series 2017-1A, Class A1R, 3 mo. USD Term SOFR + 1.242%
6.524% FRN 7/20/29 (a)		326,917		327,158
BRE Grand Islander Timeshare Issuer LLC, Series 2019-A, Class B
3.780% 9/26/33 (a)		83,614		81,207
Buttermilk Park CLO Ltd., Series 2018-1A, Class B1R, 3 mo. USD Term SOFR + 1.600%
6.901% FRN 10/15/31 (a)		500,000		500,668
Canyon Capital CLO Ltd., Series 2020-1A, Class AR, 3 mo. USD Term SOFR + 1.442%
6.743% FRN 7/15/34 (a)		600,000		600,225
Cedar Funding VIII CLO Ltd., Series 2017-8A, Class A1R, 3 mo. USD Term SOFR + 1.412%
6.697% FRN 10/17/34 (a)		500,000		500,623
CF Hippolyta Issuer LLC, Series 2020-1, Class B1
2.280% 7/15/60 (a)		90,845		86,829
CIFC Funding Ltd., Series 2017-4A, Class A2R, 3 mo. USD Term SOFR + 1.812%
7.095% FRN 10/24/30 (a)		500,000		500,543
DataBank Issuer LLC, Series 2021-1A, Class A2
2.060% 2/27/51 (a)		991,000		945,628
Elara HGV Timeshare Issuer LLC, Series 2019-A, Class C
3.450% 1/25/34 (a)		172,194		166,404
Flatiron CLO 20 Ltd., Series 2020-1A, Class AR, 3 mo. USD Term SOFR + 1.380%
6.508% FRN 5/20/36 (a)		500,000		501,120
FNA VI LLC, Series 2021-1A, Class A
1.350% 1/10/32 (a)		758,135		710,159
Goldman Home Improvement Trust Issuer Trust, Series 2021-GRN2, Class A
1.150% 6/25/51 (a)		200,463		193,464
Goodgreen Trust
Series 2019-2A, Class A, 2.760% 4/15/55 (a)		295,489		260,519
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		141,658		131,605
Series 2019-1A, Class A, 3.860% 10/15/54 (a)		134,058		124,913
Series 2018-1A, Class A, 3.930% VRN 10/15/53 (a) (e)		123,795		115,659
GreenSky Home Improvement Trust, Series 2024-1, Class A4
5.670% 6/25/59 (a)		500,000		507,266
Hero Funding Trust
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		66,347		59,147
Series 2016-4A, Class A1, 3.570% 9/20/47 (a)		63,093		57,936
Series 2015-1A, Class A, 3.840% 9/21/40 (a)		127,164		119,145
Series 2018-1A, Class A2, 4.670% 9/20/48 (a)		118,885		112,437
Hilton Grand Vacations Trust, Series 2024-2A, Class A
5.500% 3/25/38 (a)		266,320		272,389
HIN Timeshare Trust, Series 2020-A, Class B
2.230% 10/09/39 (a)		296,112		280,780
Horizon Aircraft Finance III Ltd., Series 2019-2, Class B
4.458% 11/15/39 (a)		683,333		416,821
JG Wentworth XXII LLC, Series 2010-3A, Class A
3.820% 12/15/48 (a)		50,381		49,470
Juniper Valley Park CLO Ltd., Series 2023-1A, Class AR, 3 mo. USD Term SOFR + 1.250%
6.532% FRN 7/20/36 (a)		500,000		500,500
KKR CLO 20 Ltd., Series 20, Class BR, 3 mo. USD Term SOFR + 1.550%
6.643% FRN 10/16/30 (a)		500,000		500,180

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Mosaic Solar Loan Trust, Series 2018-2GS, Class A
4.200% 2/22/44 (a)	$	109,015	$	102,724
Mosaic Solar Loans LLC, Series 2017-1A, Class A
4.450% 6/20/42 (a)		22,785		22,305
Newark BSL CLO 2 Ltd., Series 2017-1A, Class A2R, 3 mo. USD Term SOFR + 1.662%
6.946% FRN 7/25/30 (a)		250,000		250,288
NP SPE II LLC, Series 2017-1A, Class A1
3.372% 10/21/47 (a)		62,091		60,513
Oak Street Investment Grade Net Lease Fund, Series 2020-1A, Class A3
2.260% 11/20/50 (a)		398,333		380,889
Oxford Finance Funding LLC, Series 2020-1A, Class A2
3.101% 2/15/28 (a)		48,727		48,284
Pagaya AI Debt Grantor Trust, Series 2024-5, Class A
6.278% 10/15/31 (a)		865,154		876,952
PFS Financing Corp., Series 2022-A, Class B
2.770% 2/15/27 (a)		500,000		494,270
PVOne LLC, Series 2023-2A, Class A
7.670% 9/17/35 (a)		443,019		447,293
Rad CLO 4 Ltd., Series 2019-4A, Class B1R, 3 mo. USD Term SOFR + 1.750%
7.035% FRN 4/25/32 (a)		500,000		500,620
RR 19 Ltd., Series 2021-19A, Class A1, 3 mo. USD Term SOFR + 1.402%
6.703% FRN 10/15/35 (a)		500,000		500,643
RR 8 Ltd., Series 2020-8A, Class A1R, 3 mo. USD Term SOFR + 1.350%
6.675% FRN 7/15/37 (a)		500,000		500,140
SBA Tower Trust, Series 2014-2A, Class C,
3.869% STEP 10/15/49 (a)		430,000		429,857
Sierra Timeshare Receivables Funding LLC, Series 2020-2A, Class C
3.510% 7/20/37 (a)		17,045		16,784
Symphony CLO XXII Ltd., Series 2020-22A, Class BR, 3 mo. USD Term SOFR + 1.680%
6.531% FRN 4/18/33 (a)		500,000		500,088
Symphony CLO XXVIII Ltd., Series 2021-28A, Class A, 3 mo. USD Term SOFR + 1.402%
6.685% FRN 10/23/34 (a)		500,000		500,290
TICP CLO XV Ltd., Series 2020-15A, Class A, 3 mo. USD Term SOFR + 1.542%
6.824% FRN 4/20/33 (a)		1,000,000		1,002,012
Verdant Receivables LLC, Series 2024-1A, Class A2
5.680% 12/12/31 (a)		900,000		919,166
Whitebox CLO III Ltd., Series 2021-3A, Class A1R, 3 mo. USD Term SOFR + 1.270%
1.000% FRN 10/15/35 (a) (d)		500,000		500,000
				19,246,951
Real Estate Investment Trusts (REITS) — 0.2%
SBA Tower Trust
1.884% 7/15/50 (a)		287,000		276,971
Student Loans Asset-Backed Securities — 5.4%
College Avenue Student Loans LLC
Series 2021-A, Class B, 2.320% 7/25/51 (a)		584,658		534,641
Series 2017-A, Class B, 4.500% 11/26/46 (a)		191,504		184,957
Series 2018-A, Class A1, 1 mo. USD Term SOFR + 1.314% 6.169% FRN 12/26/47 (a)		187,082		187,067
Series 2017-A, Class A1, 1 mo. USD Term SOFR + 1.764% 6.619% FRN 11/26/46 (a)		126,456		126,058

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Commonbond Student Loan Trust
Series 2018-AGS, Class C, 3.820% 2/25/44 (a)	$	15,872	$	13,132
Series 2018-BGS, Class C, 4.120% 9/25/45 (a)		17,651		15,015
Series 2018-CGS, Class C, 4.350% 2/25/46 (a)		8,415		7,401
Series 2017-AGS, Class C, 5.280% 5/25/41 (a)		38,224		35,140
Laurel Road Prime Student Loan Trust
Series 2019-A, Class BFX, 3.000% 10/25/48 (a)		256,646		245,626
Series 2017-B, Class CFX, 3.610% 8/25/42 (a)		624,997		612,307
Navient Private Education Refi Loan Trust
Series 2021-CA, Class A, 1.060% 10/15/69 (a)		1,165,626		1,052,427
Series 2020-BA, Class B, 2.770% 1/15/69 (a)		2,200,000		1,892,114
SLM Student Loan Trust
Series 2006-5, Class B, 90 day USD SOFR Average + 0.472% 5.831% FRN 10/25/40		281,809		264,075
Series 2005-6, Class B, 90 day USD SOFR Average + 0.552% 5.911% FRN 1/25/44		235,538		224,355
Series 2005-9, Class B, 90 day USD SOFR Average + 0.562% 5.921% FRN 1/25/41		266,601		251,601
Series 2005-8, Class B, 90 day USD SOFR Average + 0.572% 5.931% FRN 1/25/55		88,120		83,532
SMB Private Education Loan Trust
Series 2018-C, Class A2B, 1 mo. USD Term SOFR + 0.864% 5.961% FRN 11/15/35 (a)		124,117		122,869
Series 2016-C, Class A2B, 1 mo. USD Term SOFR + 1.214% 6.311% FRN 9/15/34 (a)		10,162		10,146
Series 2023-D, Class A1B, 30 day USD SOFR Average + 1.650% 6.992% FRN 9/15/53 (a)		531,470		538,838
				6,401,301
Whole Loan Collateral Collateralized Mortgage Obligations — 5.6%
A&D Mortgage Trust, Series 2023-NQM3, Class A1,
6.733% STEP 7/25/68 (a)		1,014,380		1,032,224
Angel Oak Mortgage Trust, Series 2020-5, Class A3,
2.041% VRN 5/25/65 (a) (e)		55,865		52,716
Banc of America Mortgage Trust, Series 2004-G, Class 2A7,
6.643% VRN 8/25/34 (e)		655		653
BRAVO Residential Funding Trust, Series 2020-NQM1, Class A3,
2.406% VRN 5/25/60 (a) (e)		41,097		39,864
CIM Trust, Series 2019-INV3, Class A11, 30 day USD SOFR Average + 1.064%
5.500% FRN 8/25/49 (a)		258,477		246,445
Credit Suisse Mortgage Trust
Series 2021-NQM2, Class A3, 1.538% VRN 2/25/66 (a) (e)		397,521		362,094
Series 2021-NQM4, Class M1, 2.472% VRN 5/25/66 (a) (e)		500,000		368,883
Deephaven Residential Mortgage Trust, Series 2021-1, Class A3,
1.128% VRN 5/25/65 (a) (e)		100,450		94,461
Flagstar Mortgage Trust, Series 2021-6INV, Class A18,
2.500% VRN 8/25/51 (a) (e)		519,559		432,432
MFA Trust, Series 2021-NQM2, Class A3,
1.472% VRN 11/25/64 (a) (e)		302,020		268,113
New Residential Mortgage Loan Trust, Series 2016-4A, Class A1,
3.750% VRN 11/25/56 (a) (e)		89,601		85,847
NLT Trust
Series 2021-INV2, Class A3, 1.520% VRN 8/25/56 (a) (e)		587,336		509,518
Series 2021-INV2, Class M1, 2.569% VRN 8/25/56 (a) (e)		700,000		521,125
OBX Trust
Series 2021-NQM3, Class A3, 1.362% VRN 7/25/61 (a) (e)		683,007		569,715
Series 2021-NQM1, Class M1, 2.219% VRN 2/25/66 (a) (e)		333,000		235,041

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
STAR Trust, Series 2021-1, Class A3,
1.528% VRN 5/25/65 (a) (e)	$	415,055	$	375,435
Starwood Mortgage Residential Trust
Series 2021-3, Class A3, 1.518% VRN 6/25/56 (a) (e)		181,256		158,666
Series 2019-INV1, Class A3, 2.916% VRN 9/27/49 (a) (e)		313,374		304,376
Verus Securitization Trust
Series 2021-5, Class A3, 1.373% VRN 9/25/66 (a) (e)		167,372		143,985
Series 2019-INV3, Class M1, 3.279% VRN 11/25/59 (a) (e)		265,000		259,951
Series 2020-4, Class M1, 3.291% VRN 5/25/65 (a) (e)		548,000		531,587
Series 2019-INV2, Class A3, 4.219% VRN 7/25/59 (a) (e)		77,510		77,090
				6,670,221
Whole Loan Collateral Support Collateralized Mortgage Obligations — 0.1%
OBX Trust, Series 2020-INV1, Class A21,
3.500% VRN 12/25/49 (a) (e)		117,786		106,896

TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $49,560,118)				47,408,612

U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (f) — 0.0%
Pass-Through Securities — 0.0%
Government National Mortgage Association
Pool #491089 7.000% 12/15/28		97		97
Pool #500928 7.000% 5/15/29		344		353
Pool #510083 7.000% 7/15/29		18		19
Pool #493723 7.000% 8/15/29		266		274
Pool #581417 7.000% 7/15/32		455		464
Government National Mortgage Association II
Pool #8746 1 yr. CMT + 1.500% 3.750% FRN 11/20/25		63		63
Pool #80136 1 yr. CMT + 1.500% 3.750% FRN 11/20/27		34		33
				1,303

TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $1,411)				1,303

U.S. TREASURY OBLIGATIONS — 0.6%
U.S. Treasury Bonds & Notes — 0.6%
U.S. Treasury Notes
1.750% 12/31/24		700,000		694,808

TOTAL U.S. TREASURY OBLIGATIONS (Cost $701,006)				694,808

TOTAL BONDS & NOTES (Cost $104,661,340)				102,746,011

TOTAL LONG-TERM INVESTMENTS (Cost $104,661,340)				102,746,011


SHORT-TERM INVESTMENTS — 13.7%
Commercial Paper — 10.9%
Avangrid, Inc.
5.037% 10/15/24 (a)		2,000,000		1,995,796

MML Short-Duration Bond Fund — Portfolio of Investments (Continued)

	Principal Amount		Value
Evergy Kansas Central, Inc.
4.959% 10/01/24 (a)	$	5,000,000	$	4,999,318
NextEra Energy Capital Holdings, Inc.
5.631% 10/04/24 (a)		2,000,000		1,998,904
Wisconsin Gas LLC
4.918% 10/01/24		4,000,000		3,999,454
				12,993,472

	Number of Shares
Investment of Cash Collateral from Securities Loaned — 0.7%
State Street Navigator Securities Lending Government Money Market Portfolio (g)		893,265		893,265

	Principal Amount
Repurchase Agreement — 2.1%
Fixed Income Clearing Corp., Repurchase Agreement, dated 9/30/24, 1.520%, due 10/01/24 (h)	$	2,446,858		2,446,858

TOTAL SHORT-TERM INVESTMENTS (Cost $16,335,356)				16,333,595

TOTAL INVESTMENTS — 100.1% (Cost $120,996,696) (i)				119,079,606

Other Assets/(Liabilities) — (0.1)%				(158,562)

NET ASSETS — 100.0%			$	118,921,044

Abbreviation Legend

CLO	Collateralized Loan Obligation

CMT	Constant Maturity Treasury Index

FRN	Floating Rate Note

ICE	Inter-Continental Exchange

SOFR	Secured Overnight Financing Rate

STEP	Step Coupon Bond

VRN	Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)

(b)

Denotes all or a portion of security on loan. The total value of securities on loan as of September 30, 2024, was $1,529,431 or 1.29% of net assets. The Fund received $672,632 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(c)	Restricted security. Certain securities are restricted to resale. At September 30, 2024, these securities amounted to a value of $862,649 or 0.73% of net assets. The Fund generally bears the costs, if any, associated with the disposition of restricted securities.

(d)	A portion of this security is purchased on a when-issued, delayed-delivery or forward commitment basis.

(e)

(f)	May contain securities that are issued by a U.S. Government Agency, but are unsecured and are not guaranteed by a U.S. Government Agency.

(g)	Represents investment of security lending cash collateral. (Note 2).

(h)	Maturity value of $2,446,961. Collateralized by U.S. Government Agency obligations with a rate of 4.875%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $2,495,998.

(i)	See Note 3 for aggregate cost for federal tax purposes.

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/Net Unrealized Appreciation (Depreciation)
Long
U.S. Treasury Note 2 Year	12/31/24		298	$	61,938,424	$	117,748
Short
U.S. Treasury Long Bond	12/19/24		2	$	(249,571)	$	1,196
U.S. Treasury Ultra 10 Year	12/19/24		22		(2,603,843)		1,312
U.S. Treasury Note 5 Year	12/31/24		191		(20,970,611)		(17,006)
						$	(14,498)

MML Small Cap Equity Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 98.7%

COMMON STOCK — 98.7%
Consumer Discretionary — 9.6%
AutoNation, Inc. (a)		13,428	$	2,402,538
Dorman Products, Inc. (a)		16,713		1,890,574
Dutch Bros, Inc. Class A (a)		17,897		573,241
KB Home		29,848		2,557,675
Steven Madden Ltd.		32,900		1,611,771
Stride, Inc. (a) (b)		13,936		1,188,880
Texas Roadhouse, Inc.		5,708		1,008,033
Visteon Corp. (a)		15,474		1,473,744
				12,706,456
Consumer Staples — 1.1%
BellRing Brands, Inc. (a)		22,755		1,381,684
Energy — 5.1%
Civitas Resources, Inc.		25,016		1,267,561
CNX Resources Corp. (a) (b)		53,570		1,744,775
Helmerich & Payne, Inc. (b)		49,906		1,518,140
Northern Oil & Gas, Inc.		41,290		1,462,079
Nov, Inc.		43,134		688,850
				6,681,405
Financials — 14.7%
Bank of NT Butterfield & Son Ltd.		21,189		781,450
Berkshire Hills Bancorp, Inc.		27,869		750,512
Cathay General Bancorp		36,298		1,558,999
Columbia Banking System, Inc. (b)		56,255		1,468,818
Definity Financial Corp. (b)		38,687		1,559,265
Federated Hermes, Inc.		37,389		1,374,794
Marqeta, Inc. Class A (a)		140,597		691,737
OceanFirst Financial Corp.		43,326		805,430
Pacific Premier Bancorp, Inc.		53,972		1,357,936
PennyMac Financial Services, Inc.		20,088		2,289,429
Skyward Specialty Insurance Group, Inc. (a)		14,766		601,419
Stifel Financial Corp.		11,517		1,081,446
United Community Banks, Inc.		30,244		879,496
Webster Financial Corp.		26,498		1,235,072
Wintrust Financial Corp.		18,880		2,049,047
WSFS Financial Corp. (b)		19,007		969,167
				19,454,017
Health Care — 19.4%
Acadia Healthcare Co., Inc. (a) (b)		23,646		1,499,393
Addus HomeCare Corp. (a)		7,203		958,215
ADMA Biologics, Inc. (a)		174,157		3,481,398
Ascendis Pharma AS ADR (a)		9,737		1,453,831

MML Small Cap Equity Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
BioLife Solutions, Inc. (a) (b)		39,153	$	980,391
Bridgebio Pharma, Inc. (a)		23,609		601,085
BrightSpring Health Services, Inc. (a) (b)		43,536		639,108
Collegium Pharmaceutical, Inc. (a)		27,736		1,071,719
Encompass Health Corp.		11,149		1,077,439
Evolent Health, Inc. Class A (a) (b)		35,253		996,955
Guardant Health, Inc. (a)		36,773		843,573
Immunovant, Inc. (a) (b)		13,488		384,543
Inspire Medical Systems, Inc. (a) (b)		6,440		1,359,162
Instil Bio, Inc. (a) (b)		4,399		296,141
Integer Holdings Corp. (a) (b)		10,622		1,380,860
Intra-Cellular Therapies, Inc. (a)		20,963		1,533,863
Merus NV (a)		7,762		387,789
Repligen Corp. (a)		7,511		1,117,787
Structure Therapeutics, Inc. ADR (a) (b)		10,847		476,075
Surgery Partners, Inc. (a)		39,329		1,267,967
TransMedics Group, Inc. (a)		8,649		1,357,893
Twist Bioscience Corp. (a)		34,416		1,554,915
Ultragenyx Pharmaceutical, Inc. (a)		14,972		831,695
				25,551,797
Industrials — 19.2%
AAR Corp. (a)		17,336		1,133,081
ABM Industries, Inc.		23,669		1,248,776
Air Lease Corp. (b)		25,197		1,141,172
Allison Transmission Holdings, Inc.		24,791		2,381,671
Atkore, Inc.		17,751		1,504,220
BWX Technologies, Inc.		10,702		1,163,307
CACI International, Inc. Class A (a)		3,010		1,518,726
Casella Waste Systems, Inc. Class A (a)		18,592		1,849,718
Enpro, Inc.		10,797		1,751,058
Esab Corp.		17,816		1,894,019
Gates Industrial Corp. PLC (a)		61,920		1,086,696
Hub Group, Inc. Class A		41,603		1,890,856
Korn Ferry		28,375		2,134,935
Paycor HCM, Inc. (a)		79,130		1,122,855
Regal Rexnord Corp.		5,485		909,852
Zurn Elkay Water Solutions Corp. (b)		70,969		2,550,626
				25,281,568
Information Technology — 14.1%
Allegro MicroSystems, Inc. (a) (b)		55,493		1,292,987
ASGN, Inc. (a)		16,205		1,510,792
Astera Labs, Inc. (a) (b)		11,644		610,029
Belden, Inc.		17,151		2,008,897
Gitlab, Inc. Class A (a)		23,548		1,213,664
Informatica, Inc. Class A (a)		40,670		1,028,138
Itron, Inc. (a)		18,921		2,020,952
MACOM Technology Solutions Holdings, Inc. (a)		15,883		1,767,143
MARA Holdings, Inc. (a) (b)		54,787		888,645
MKS Instruments, Inc.		12,334		1,340,829
Progress Software Corp. (b)		17,533		1,181,198
Silicon Laboratories, Inc. (a) (b)		10,529		1,216,837
Unity Software, Inc. (a) (b)		58,391		1,320,804
Vishay Intertechnology, Inc.		62,428		1,180,513
				18,581,428

MML Small Cap Equity Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
Materials — 6.7%
ATI, Inc. (a)		30,773	$	2,059,021
Century Aluminum Co. (a)		37,905		615,198
Commercial Metals Co.		23,201		1,275,127
Kaiser Aluminum Corp.		10,009		725,853
Silgan Holdings, Inc.		30,971		1,625,978
Summit Materials, Inc. Class A (a)		65,907		2,572,350
				8,873,527
Real Estate — 6.7%
DiamondRock Hospitality Co.		221,065		1,929,897
DigitalBridge Group, Inc.		88,744		1,253,953
Four Corners Property Trust, Inc.		72,474		2,124,213
Outfront Media, Inc.		93,484		1,718,236
Terreno Realty Corp.		27,944		1,867,498
				8,893,797
Utilities — 2.1%
Chesapeake Utilities Corp.		11,051		1,372,202
Portland General Electric Co. (b)		30,022		1,438,054
				2,810,256

TOTAL COMMON STOCK (Cost $90,965,138)				130,215,935

TOTAL EQUITIES (Cost $90,965,138)				130,215,935

TOTAL LONG-TERM INVESTMENTS (Cost $90,965,138)				130,215,935


SHORT-TERM INVESTMENTS — 2.3%
Investment of Cash Collateral from Securities Loaned — 1.0%
State Street Navigator Securities Lending Government Money Market Portfolio (c)		1,396,218		1,396,218

	Principal Amount
Repurchase Agreement — 1.3%
Fixed Income Clearing Corp., Repurchase Agreement, dated 9/30/24, 1.520%, due 10/01/24 (d)	$	1,711,693		1,711,693

TOTAL SHORT-TERM INVESTMENTS (Cost $3,107,911)				3,107,911

TOTAL INVESTMENTS — 101.0% (Cost $94,073,049) (e)				133,323,846

Other Assets/(Liabilities) — (1.0)%				(1,381,248)

NET ASSETS — 100.0%			$	131,942,598

Abbreviation Legend

ADR	American Depositary Receipt

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)	Non-income producing security.

(b)

Denotes all or a portion of security on loan. The total value of securities on loan as of September 30, 2024, was $23,354,589 or 17.70% of net assets. The Fund received $22,370,048 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(c)	Represents investment of security lending cash collateral. (Note 2).

(d)	Maturity value of $1,711,765. Collateralized by U.S. Government Agency obligations with a rate of 4.875%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $1,746,126.

(e)	See Note 3 for aggregate cost for federal tax purposes.

MML Strategic Emerging Markets Fund — Portfolio of Investments

September 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 97.8%

COMMON STOCK — 97.0%
Brazil — 4.7%
Azzas 2154 SA		4,420	$	34,215
Banco BTG Pactual SA		67,600		412,844
Localiza Rent a Car SA		60,408		454,637
NU Holdings Ltd. Class A (a)		33,445		456,524
Raia Drogasil SA		69,300		324,258
Vale SA Sponsored ADR		1,868		21,818
WEG SA		53,284		531,989
				2,236,285
Chile — 1.1%
Antofagasta PLC		9,551		257,915
Banco de Chile		2,135,497		272,369
				530,284
China — 21.2%
Airtac International Group		8,000		232,190
Alibaba Group Holding Ltd. Sponsored ADR		12,190		1,293,603
Budweiser Brewing Co. APAC Ltd. (b)		101,800		134,381
Contemporary Amperex Technology Co. Ltd. Class A		2,500		88,796
H World Group Ltd.		4,900		18,497
H World Group Ltd. ADR		65,687		2,443,556
Meituan Class B (a) (b)		66,700		1,419,634
NetEase, Inc. ADR		2,355		220,216
New Horizon Health Ltd. (a) (b) (c) (d)		63,000		28,648
PDD Holdings, Inc. ADR (a)		4,088		551,103
Tencent Holdings Ltd.		48,709		2,727,358
WuXi XDC Cayman, Inc. (a)		15,199		45,707
Yum China Holdings, Inc.		6,278		282,636
ZTO Express Cayman, Inc. ADR		24,732		612,612
				10,098,937
France — 3.8%
Pernod Ricard SA		6,180		934,106
TotalEnergies SE (e)		13,441		871,182
				1,805,288
Hong Kong — 1.1%
AIA Group Ltd.		62,000		548,254
India — 16.7%
Adani Ports & Special Economic Zone Ltd.		13,982		241,330
Bajaj Finance Ltd.		680		62,610
Bajaj Finserv Ltd.		1,330		31,312
Bharti Airtel Ltd.		10,514		215,434

MML Strategic Emerging Markets Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
Havells India Ltd.		12,724	$	307,555
HCL Technologies Ltd.		13,902		298,944
HDFC Bank Ltd.		68,177		1,411,136
Infosys Ltd.		23,822		531,719
Kotak Mahindra Bank Ltd.		104,478		2,318,497
Macrotech Developers Ltd. (b)		19,944		294,534
Mahindra & Mahindra Ltd.		4,510		168,045
Maruti Suzuki India Ltd.		586		92,603
Oberoi Realty Ltd.		33,094		742,682
Sun Pharmaceutical Industries Ltd.		1,453		33,441
Tata Consultancy Services Ltd.		23,375		1,193,515
				7,943,357
Indonesia — 1.5%
Bank Central Asia Tbk. PT		1,025,200		698,983
Italy — 3.1%
Ermenegildo Zegna NV (e)		12,397		121,987
Moncler SpA		7,140		453,346
PRADA SpA		117,100		904,381
				1,479,714
Japan — 2.1%
Chugai Pharmaceutical Co. Ltd.		6,300		304,682
Daiichi Sankyo Co. Ltd.		20,900		687,112
				991,794
Mexico — 8.6%
America Movil SAB de CV ADR		46,275		757,059
Fomento Economico Mexicano SAB de CV		152,916		1,507,648
Grupo Aeroportuario del Pacifico SAB de CV Class B		5,055		87,611
Grupo Aeroportuario del Sureste SAB de CV Class B		4,885		138,043
Grupo Mexico SAB de CV Series B		212,226		1,185,620
Wal-Mart de Mexico SAB de CV		143,157		431,943
				4,107,924
Netherlands — 0.9%
Argenx SE ADR (a)		845		458,058
Peru — 1.1%
Credicorp Ltd.		2,836		513,231
Philippines — 1.9%
SM Investments Corp.		42,395		724,595
SM Prime Holdings, Inc.		313,200		180,832
				905,427
Poland — 0.8%
Allegro.eu SA (a) (b)		40,650		367,334
Portugal — 2.1%
Galp Energia SGPS SA		53,516		1,004,835
Republic of Korea — 7.0%
Kakao Corp.		669		18,494
NAVER Corp.		933		121,480

MML Strategic Emerging Markets Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
Samsung Biologics Co. Ltd. (a) (b)		1,077	$	806,499
Samsung Electronics Co. Ltd.		41,418		1,963,020
SK Hynix, Inc.		3,194		430,259
				3,339,752
Russia — 0.0%
Novatek PJSC GDR (a) (b) (c) (d)		600		—
Sberbank of Russia PJSC (a) (c) (d)		7,525		—
				—
South Africa — 1.2%
FirstRand Ltd.		118,788		572,529
Switzerland — 0.5%
Cie Financiere Richemont SA Registered Class A		1,578		250,180
Taiwan — 14.5%
Global Unichip Corp.		3,000		105,120
Hon Hai Precision Industry Co. Ltd.		33,000		197,235
MediaTek, Inc.		24,000		896,246
Taiwan Semiconductor Manufacturing Co. Ltd.		179,000		5,464,813
Voltronic Power Technology Corp.		4,000		255,171
				6,918,585
Turkey — 0.9%
Akbank TAS		39,850		71,876
BIM Birlesik Magazalar AS		8,253		119,876
KOC Holding AS		36,393		200,532
Migros Ticaret AS		3,960		52,072
				444,356
United Arab Emirates — 0.3%
Americana Restaurants International PLC - Foreign Co.		179,395		130,935
United Kingdom — 1.4%
AstraZeneca PLC		4,166		648,917
United States — 0.5%
Legend Biotech Corp. ADR (a)		4,927		240,093

TOTAL COMMON STOCK (Cost $40,513,344)				46,235,052

PREFERRED STOCK — 0.8%
Brazil — 0.8%
Itau Unibanco Holding SA 6.508%
		59,619		395,183

TOTAL PREFERRED STOCK (Cost $339,350)				395,183

TOTAL EQUITIES (Cost $40,852,694)				46,630,235

TOTAL LONG-TERM INVESTMENTS (Cost $40,852,694)				46,630,235

MML Strategic Emerging Markets Fund — Portfolio of Investments (Continued)

	Number of Shares		Value
SHORT-TERM INVESTMENTS — 1.7%
Investment of Cash Collateral from Securities Loaned — 0.1%
State Street Navigator Securities Lending Government Money Market Portfolio (f)		56,804	$	56,804

	Principal Amount
Repurchase Agreement — 1.6%
Fixed Income Clearing Corp., Repurchase Agreement, dated 9/30/24, 1.520%, due 10/01/24 (g)	$	730,961		730,961

TOTAL SHORT-TERM INVESTMENTS (Cost $787,765)				787,765

TOTAL INVESTMENTS — 99.5% (Cost $41,640,459) (h)				47,418,000

Other Assets/(Liabilities) — 0.5%				249,178

NET ASSETS — 100.0%			$	47,667,178

Abbreviation Legend

ADR	American Depositary Receipt

GDR	Global Depositary Receipt

PJSC	Public Joint Stock Company

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a)	Non-income producing security.

(b)

(c)	This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At September 30, 2024, these securities amounted to a value of $28,648 or 0.06% of net assets.

(d)	Investment is valued using significant unobservable inputs.

(e)

Denotes all or a portion of security on loan. The total value of securities on loan as of September 30, 2024, was $893,849 or 1.88% of net assets. The Fund received $899,248 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(f)	Represents investment of security lending cash collateral. (Note 2).

(g)	Maturity value of $730,992. Collateralized by U.S. Government Agency obligations with a rate of 4.875%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $745,642.

(h)	See Note 3 for aggregate cost for federal tax purposes.

Notes to Portfolio of Investments (Unaudited)

1. The Funds

MML Series Investment Fund II (the "Trust") is registered under the Investment Company Act of 1940, as amended, as an open-end management investment company. The Trust is organized under the laws of the Commonwealth of Massachusetts as a Massachusetts business trust pursuant to an Agreement and Declaration of Trust dated February 8, 2005, which was amended and restated as of February 28, 2005 and December 15, 2011, as it may be further amended from time to time. The Trust consists of 13 series, including the following 12 series listed below (each individually referred to as a "Fund" or collectively as the "Funds"):

MML Blend Fund ("Blend Fund")

MML Dynamic Bond Fund ("Dynamic Bond Fund")

MML Equity Fund ("Equity Fund")

MML Equity Rotation Fund ("Equity Rotation Fund")

MML High Yield Fund ("High Yield Fund")

MML Inflation-Protected and Income Fund ("Inflation-Protected and Income Fund")

MML iShares^® 60/40 Allocation Fund

MML iShares^® 80/20 Allocation Fund

MML Managed Bond Fund ("Managed Bond Fund")

MML Short-Duration Bond Fund ("Short-Duration Bond Fund")

MML Small Cap Equity Fund ("Small Cap Equity Fund")

MML Strategic Emerging Markets Fund ("Strategic Emerging Markets Fund")

The Trust makes shares of the Funds available for the investment of assets of various separate investment accounts established by Massachusetts Mutual Life Insurance Company ("MassMutual") and by life insurance companies which are subsidiaries of MassMutual. Shares of the Trust are not offered to the general public. MassMutual, MML Bay State Life Insurance Company, C.M. Life Insurance Company, and the MML Conservative Allocation Fund, MML Balanced Allocation Fund, MML Moderate Allocation Fund, MML Growth Allocation Fund, and MML Aggressive Allocation Fund, which are "funds of funds" series of MML Series Investment Fund, another open-end management investment company sponsored by MassMutual, are the record owners of all of the outstanding shares of the Funds.

The Blend Fund, MML iShares^® 60/40 Allocation Fund, and MML iShares^® 80/20 Allocation Fund invest substantially all of their investable assets in shares of ETFs advised by an affiliate of the Funds' subadviser, BlackRock Investment Management, LLC ("Underlying ETFs").

2. Significant Accounting Policies

Each Fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board Accounting Standards Codification Topic 946, Financial Services – Investment Companies.

Investment Valuation

The net asset value of each Fund’s shares is determined once daily as of the close of regular trading on the New York Stock Exchange ("NYSE"), on each day the NYSE is open for trading (a "business day"). The NYSE normally closes at 4:00 p.m. Eastern Time, but may close earlier on some days. If the NYSE is scheduled to close early, the business day will be considered to end as of the time of the NYSE’s scheduled close. A Fund will not treat an intraday disruption in NYSE trading or other event that causes an unscheduled closing of the NYSE as a close of business of the NYSE for these purposes; instead, MML Investment Advisers, LLC ("MML Advisers") will determine the fair value of a Fund’s securities in accordance with MML Advisers’ fair valuation policy and procedures. On holidays and other days when the NYSE is closed, each Fund’s net asset value generally is not calculated and the Funds do not anticipate accepting buy or sell orders. However, the value of each Fund’s assets may still be affected on such days to the extent that a Fund holds foreign securities that trade on days that foreign securities markets are open.

Notes to Portfolio of Investments (Unaudited) (Continued)

Equity securities and derivative contracts that are actively traded on a national securities exchange or contract market are valued on the basis of information furnished by a pricing service, which provides the last reported sale price, or, in the case of futures contracts, the settlement price, for securities or derivatives listed on the exchange or contract market or the official closing price on the NASDAQ National Market System ("NASDAQ System"), or in the case of over-the-counter ("OTC") securities for which an official closing price is unavailable or not reported on the NASDAQ System, the last reported bid price. Portfolio securities traded on more than one national securities exchange are valued at the last price at the close of the exchange representing the principal market for such securities. Debt securities are valued on the basis of valuations furnished by a pricing service, which generally determines valuations taking into account factors such as institutional-size trading in similar securities, yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. Shares of other open-end mutual funds are valued at their closing net asset values as reported on each business day.

Investments for which market quotations are readily available are marked to market daily based on those quotations. Market quotations may be provided by third-party vendors or market makers, and may be determined on the basis of a variety of factors, such as broker quotations, financial modeling, and other market data, such as market indexes and yield curves, counterparty information, and foreign exchange rates. U.S. Government and agency securities may be valued on the basis of market quotations or using a model that may incorporate market observable data such as reported sales of similar securities, broker quotes, yields, bids, offers, quoted market prices, and reference data. The fair values of OTC derivative contracts, including forward, swap, and option contracts related to interest rates, foreign currencies, credit standing of reference entities, equity prices, or commodity prices, may be based on market quotations or may be modeled using a series of techniques, including simulation models, depending on the contract and the terms of the transaction. The fair values of asset-backed securities and mortgage-backed securities are estimated based on models that consider the estimated cash flows of each debt tranche of the issuer, established benchmark yield, and estimated tranche-specific spread to the benchmark yield based on the unique attributes of the tranche, including, but not limited to, prepayment speed assumptions and attributes of the collateral.

The Board of Trustees ("Trustees") have designated MML Advisers as the Funds’ "valuation designee," responsible for determining the fair value, in good faith, of securities and other instruments held by the Funds for which market quotations are not readily available or for which such market quotations or values are considered by MML Advisers or a subadviser to be unreliable (including, for example, certain foreign securities, thinly-traded securities, certain restricted securities, certain initial public offerings, or securities whose values may have been affected by a significant event). It is possible that a significant amount of a Fund’s assets will be subject to fair valuation in accordance with MML Advisers’ fair valuation policy and procedures. The fair value determined for an investment by MML Advisers may differ from recent market prices for the investment and may be significantly different from the value realized upon the sale of such investment.

The Funds may invest in securities that are traded principally in foreign markets and that trade on weekends and other days when the Funds do not price their shares. As a result, the values of the Funds' portfolio securities may change on days when the prices of the Funds' shares are not calculated. The prices of the Funds' shares will reflect any such changes when the prices of the Funds' shares are next calculated, which is the next business day. The Funds may use fair value pricing more frequently for securities primarily traded in foreign markets because, among other things, most foreign markets close well before the Funds value their securities. The earlier close of these foreign markets gives rise to the possibility that significant events, including broad market moves, may have occurred in the interim. The Funds' investments may be priced based on fair values provided by a third-party vendor, based on certain factors and methodologies applied by such vendor, in the event that there is movement in the U.S. market, between the close of the foreign market and the time the Funds calculate their net asset values. All assets and liabilities expressed in foreign currencies are converted into U.S. dollars at the mean between the buying and selling rates of such currencies against the U.S. dollar at the end of each business day.

Notes to Portfolio of Investments (Unaudited) (Continued)

Investments in equity or debt issued by privately held companies or funds ("Private Company" or collectively, the "Private Companies") and any other investments fair valued using significant unobservable inputs may be fair valued using alternate valuation approaches including, but not limited to, the following:

Market approach: considers factors including the price of recent investments in the same or similar security or financial metrics of comparable securities.

Income approach: considers factors including expected future cash flows, security specific risks, and corresponding discount rates.

Cost approach: considers factors including the value of the security’s underlying assets and liabilities.

Investments in series of preferred stock issued by Private Companies are typically valued utilizing the Market approach in determining the enterprise value of the company. Such investments often contain rights and preferences that differ from other series of preferred and common stock of the same issuer. Valuation techniques such as the current value method ("CVM"), an option pricing model ("OPM"), a probability weighted expected return model ("PWERM"), or a hybrid of those techniques are used in allocating enterprise value of the company, as deemed appropriate under the circumstances. The CVM allocates value among the various parts of a company’s capital structure assuming that the value of convertible preferred stock is represented by the most favorable claim the preferred stockholders have on the enterprise value as of the valuation date. The use of OPM and PWERM techniques involve a determination of the exit scenarios of the investment in order to appropriately allocate the enterprise value of the company among the various parts of its capital structure.

The Private Companies are not subject to the public company disclosure, timing, and reporting standards as other investments held by a Fund. Typically, the most recently available information for a Private Company is as of a date that is earlier than the date a Fund is calculating its net asset value. This factor may result in a difference between the value of the investment and the price a Fund could receive upon the sale of the investment.

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three-tier hierarchy is utilized to maximize the use of observable market data inputs and minimize the use of unobservable inputs and to establish classification of fair value measurements for disclosure purposes. Inputs refer broadly to the assumptions that market participants would use in pricing the asset or liability, including assumptions about risk, for example, the risk inherent in a particular valuation technique used to measure fair value (such as a pricing model) and/or the risk inherent in the inputs to the valuation technique. Inputs may be observable or unobservable. Observable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability and are developed based on market data obtained from sources independent of the reporting entity. Unobservable inputs are inputs that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances. The three-tier hierarchy of inputs is summarized in the three broad Levels listed below. The inputs or methodology used for valuing investments are not necessarily an indication of the risk associated with investing in those investments and the determination of the significance of a particular input to the fair value measurement in its entirety requires judgment and consideration of factors specific to each security.

Notes to Portfolio of Investments (Unaudited) (Continued)

Level 1 – quoted prices (unadjusted) in active markets for identical investments that the Funds can access at the measurement date

Level 2 – other significant observable inputs (including fair value factors, quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

Level 3 – significant unobservable inputs, to the extent observable inputs are not available (including the Funds' own assumptions in determining the fair value of investments)

The availability of observable inputs can vary from security to security and is affected by a wide variety of factors, including, for example, the type of security, whether the security is new and not yet established in the marketplace, the liquidity of markets, and other characteristics particular to the security. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3.

Changes in valuation techniques may result in transfers in or out of an investment’s assigned Level within the hierarchy. In addition, in periods of market dislocation, the observability of prices and inputs may be reduced for many instruments. This condition, as well as changes related to liquidity of investments, could cause a security to be reclassified between Levels.

In certain cases, the inputs used to measure fair value may fall into different Levels of the fair value hierarchy. In such cases, for disclosure purposes, the Level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest Level input that is significant to the overall fair value measurement.

The MML iShares^® 60/40 Allocation Fund characterized all investments at Level 1, as of September 30, 2024. The Equity Fund characterized all long-term investments at Level 1, and all short-term investments at Level 2, as of September 30, 2024. For each Fund noted in the preceding sentences, the level classification by major category of investments is the same as the category presentation in the Portfolio of Investments.

Notes to Portfolio of Investments (Unaudited) (Continued)

The following is the aggregate value by input level, as of September 30, 2024, for the remaining Funds' investments:

Blend Fund

Asset Investments	Level 1		Level 2		Level 3		Total
Exchange-Traded Funds	$	709,308,025	$	—	$	—	$	709,308,025
Short-Term Investments		18,180,650		1,254,214		—		19,434,864
Total Investments	$	727,488,675	$	1,254,214	$	—	$	728,742,889

Notes to Portfolio of Investments (Unaudited) (Continued)

Dynamic Bond Fund

Asset Investments	Level 1			Level 2			Level 3		Total
Bank Loans	$	—		$	4,398,296		$	—	$	4,398,296
Corporate Debt		—			78,362,575			—		78,362,575
Non-U.S. Government Agency Obligations		—			30,802,046			—		30,802,046
Sovereign Debt Obligations		—			12,231,304			—		12,231,304
U.S. Government Agency Obligations and Instrumentalities		—			71,181,995			—		71,181,995
U.S. Treasury Obligations		—			12,293,184			—		12,293,184
Purchased Options		17,531			26,135			—		43,666
Short-Term Investments		1,955,185			2,181,353			—		4,136,538
Total Investments	$	1,972,716		$	211,476,888		$	—	$	213,449,604

Liability Investments
Unfunded Loan Commitments	$	—		$	(93	)	$	—	$	(93	)

Asset Derivatives
Forward Contracts	$	—		$	672,929		$	—	$	672,929
Futures Contracts		400,470			—			—		400,470
Swap Agreements		—			843,439			—		843,439
Total	$	400,470		$	1,516,368		$	—	$	1,916,838

Liability Derivatives
Forward Contracts	$	—		$	(642,410	)	$	—	$	(642,410	)
Futures Contracts		(174,142	)		—			—		(174,142	)
Swap Agreements		—			(1,298,862	)		—		(1,298,862	)
Written Options		(278,479	)		—			—		(278,479	)
Total	$	(452,621	)	$	(1,941,272	)	$	—	$	(2,393,893	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Equity Rotation Fund

Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock	$	55,473,467	$	—	$	1,953	$	55,475,420
Short-Term Investments		11,565		—		—		11,565
Total Investments	$	55,485,032	$	—	$	1,953	$	55,486,985

Notes to Portfolio of Investments (Unaudited) (Continued)

High Yield Fund

Asset Investments	Level 1		Level 2		Level 3		Total
Bank Loans	$	—	$	5,004,303	$	—	$	5,004,303
Corporate Debt		—		43,552,133		—		43,552,133
Short-Term Investments		2,247,465		1,848,067		—		4,095,532
Total Investments	$	2,247,465	$	50,404,503	$	—	$	52,651,968

Notes to Portfolio of Investments (Unaudited) (Continued)

Inflation-Protected and Income Fund

Asset Investments	Level 1			Level 2			Level 3		Total
Non-U.S. Government Agency Obligations	$	—		$	106,404,180		$	—	$	106,404,180
U.S. Government Agency Obligations and Instrumentalities		—			10,075,433			—		10,075,433
U.S. Treasury Obligations		—			37,727,956			—		37,727,956
Short-Term Investments		—			22,544,451			—		22,544,451
Total Investments	$	—		$	176,752,020		$	—	$	176,752,020

Asset Derivatives
Futures Contracts	$	43,649		$	—		$	—	$	43,649
Swap Agreements		—			5,421,839			—		5,421,839
Total	$	43,649		$	5,421,839		$	—	$	5,465,488

Liability Derivatives
Futures Contracts	$	(83,497	)	$	—		$	—	$	(83,497	)
Swap Agreements		—			(1,320	)		—		(1,320	)
Total	$	(83,497	)	$	(1,320	)	$	—	$	(84,817	)

Notes to Portfolio of Investments (Unaudited) (Continued)

MML iShares^® 80/20 Allocation Fund

Asset Investments	Level 1		Level 2		Level 3		Total
Exchange-Traded Funds	$	86,451,129	$	—	$	—	$	86,451,129
Short-Term Investments		1,432,575		106,745		—		1,539,320
Total Investments	$	87,883,704	$	106,745	$	—	$	87,990,449

Notes to Portfolio of Investments (Unaudited) (Continued)

Managed Bond Fund

Asset Investments	Level 1			Level 2		Level 3		Total
Corporate Debt	$	—		$	253,016,250	$	—	$	253,016,250
Non-U.S. Government Agency Obligations		—			157,921,039		—		157,921,039
Sovereign Debt Obligations		—			1,397,226		—		1,397,226
U.S. Government Agency Obligations and Instrumentalities		—			200,051,913		—		200,051,913
U.S. Treasury Obligations		—			18,098,763		—		18,098,763
Short-Term Investments		5,475,695			92,202,888		—		97,678,583
Total Investments	$	5,475,695		$	722,688,079	$	—	$	728,163,774

Asset Derivatives
Futures Contracts	$	56,756		$	—	$	—	$	56,756

Liability Derivatives
Futures Contracts	$	(234,678	)	$	—	$	—	$	(234,678	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Short-Duration Bond Fund

Asset Investments	Level 1			Level 2		Level 3		Total
Corporate Debt	$	—		$	54,641,288	$	—	$	54,641,288
Non-U.S. Government Agency Obligations		—			47,408,612		—		47,408,612
U.S. Government Agency Obligations and Instrumentalities		—			1,303		—		1,303
U.S. Treasury Obligations		—			694,808		—		694,808
Short-Term Investments		893,265			15,440,330		—		16,333,595
Total Investments	$	893,265		$	118,186,341	$	—	$	119,079,606

Asset Derivatives
Futures Contracts	$	120,256		$	—	$	—	$	120,256

Liability Derivatives
Futures Contracts	$	(17,006	)	$	—	$	—	$	(17,006	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Small Cap Equity Fund

Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock	$	130,215,935	$	—	$	—	$	130,215,935
Short-Term Investments		1,396,218		1,711,693		—		3,107,911
Total Investments	$	131,612,153	$	1,711,693	$	—	$	133,323,846

Notes to Portfolio of Investments (Unaudited) (Continued)

Strategic Emerging Markets Fund

Asset Investments	Level 1		Level 2		Level 3			Total
Common Stock*
Brazil	$	2,236,285	$	—	$	—		$	2,236,285
Chile		272,369		257,915		—			530,284
China		5,403,726		4,666,563		28,648			10,098,937
France		—		1,805,288		—			1,805,288
Hong Kong		—		548,254		—			548,254
India		—		7,943,357		—			7,943,357
Indonesia		—		698,983		—			698,983
Italy		121,987		1,357,727		—			1,479,714
Japan		—		991,794		—			991,794
Mexico		4,107,924		—		—			4,107,924
Netherlands		458,058		—		—			458,058
Peru		513,231		—		—			513,231
Philippines		—		905,427		—			905,427
Poland		—		367,334		—			367,334
Portugal		—		1,004,835		—			1,004,835
Republic of Korea		18,494		3,321,258		—			3,339,752
Russia		—		—		—	+		—
South Africa		—		572,529		—			572,529
Switzerland		—		250,180		—			250,180
Taiwan		—		6,918,585		—			6,918,585
Turkey		—		444,356		—			444,356
United Arab Emirates		—		130,935		—			130,935
United Kingdom		—		648,917		—			648,917
United States		240,093		—		—			240,093
Preferred Stock
Brazil		395,183		—		—			395,183
Short-Term Investments		56,804		730,961		—			787,765
Total Investments	$	13,824,154	$	33,565,198	$	28,648		$	47,418,000

Includes foreign equity securities whose values were adjusted to reflect market trading of comparable securities or other correlated instruments after the close of trading in their respective foreign markets, as applicable.

Represents a security at $0 value as of September 30, 2024.

Notes to Portfolio of Investments (Unaudited) (Continued)

Derivative Instruments

Derivatives are financial instruments whose values are based on the values of one or more underlying indicators, such as a security, asset, currency, interest rate, or index. Derivative transactions can create investment leverage and may be highly volatile. Losses from derivatives can be substantially greater than the derivatives' original cost and can sometimes be unlimited. A Fund may not be able to close out a derivative transaction at a favorable time or price.

Please refer to the Funds’ most recent Annual/Semiannual reports and Prospectus(es) and Statement(s) of Additional Information which can be found on the Securities and Exchange Commission's EDGAR database on its website at http://www.sec.gov for more information regarding the derivatives and other investments held by the Fund(s).

Securities Lending

Each Fund may lend its securities; however, lending cannot exceed 33% of the total assets of the Fund taken at current value. The Funds’ securities lending activities are governed by a Securities Lending Agency Agreement ("Lending Agreement") between each Fund and the lending agent ("Agent"). The Lending Agreement authorizes the Agent to lend portfolio securities held by a Fund to approved borrowers (each, a "Borrower").

Notes to Portfolio of Investments (Unaudited) (Continued)

Each Fund expects that in connection with any securities on loan, the loan will be secured continuously by collateral consisting of cash (U.S. currency) and/or securities (U.S. Treasury and Agency obligations) adjusted daily to have value at least equal to the current market value of the securities loaned. The market value of the loaned securities is determined at the close of business of a Fund and any additional collateral is delivered to the Fund the next business day. The Funds bear the risk of loss with respect to the investment of cash collateral. As with other extensions of credit, the Funds may bear the risk of delay in recovery of the loaned securities or even loss of rights in the collateral should the Borrower of the securities fail financially. Pursuant to the Lending Agreement, the Agent has provided indemnification to the Funds in the event of default by a Borrower with respect to a loan. The Funds receive compensation for lending their securities in the form of a securities loan fee paid by the Borrower, as well as a share of the income earned on investment of the cash collateral received for the loaned securities. At September 30, 2024, the Funds' collateral was equal to or greater than 100% of the market value of securities on loan and all of the Funds’ cash collateral was invested in the State Street Navigator Securities Lending Government Money Market Portfolio.

Subject to the terms of the Lending Agreement and the agreement between the Agent and the applicable Borrower ("Borrowing Agreement"), security loans can be terminated by the Agent, the Fund, or the Borrower and the related securities must be returned within the earlier of the customary settlement period for such securities or the period of time specified in the Borrowing Agreement.

Accounting for Investment Transactions

Investment transactions are accounted for on the trade date. Realized gains and losses on sales of investments and unrealized appreciation and depreciation of investments are computed by the specific identification cost method. Proceeds received from litigation, if any, are included in realized gains on investment transactions for any investments that are no longer held in the portfolio and as a reduction in cost for investments that continue to be held in the portfolio. Interest income, adjusted for amortization of discounts and premiums on debt securities, is earned from the settlement date and is recorded on the accrual basis. Dividend income are recorded on the ex-dividend date. Withholding taxes on foreign interest, dividends, and capital gains have been provided for in accordance with the applicable country's tax rules and rates. Foreign dividend income is recorded on the ex-dividend date or as soon as practicable after the Fund determines the existence of a dividend declaration after exercising reasonable due diligence. Distributions received on securities that represent a return of capital or capital gains are recorded as a reduction of cost of investments and/or as a realized gain.

Foreign Currency Translation

The books and records of the Funds are maintained in U.S. dollars. The market values of foreign currencies, foreign securities, and other assets and liabilities denominated in foreign currencies are translated into U.S. dollars at the mean of the buying and selling rates of such currencies against the U.S. dollar at the end of each business day. Purchases and sales of foreign securities and income and expense items are translated at the rates of exchange prevailing on the respective dates of such transactions. The Funds do not isolate that portion of the results of operations arising from changes in the exchange rates from that portion arising from changes in the market prices of securities. Net realized foreign currency gains and losses resulting from changes in exchange rates include foreign currency gains and losses between trade date and settlement date on investment securities transactions, foreign currency transactions, and the difference between the amounts of dividends or interest recorded on the books of the Funds and the amount actually received.

Foreign Securities

The Strategic Emerging Markets Fund invests substantially all of its assets in foreign securities. The other Funds, except for the Blend Fund, MML iShares^® 60/40 Allocation Fund, and MML iShares^® 80/20 Allocation Fund, may also invest in foreign securities. In addition, certain Underlying ETFs may invest in foreign securities. Foreign securities, including American Depositary Receipts, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, public health, and diplomatic risks. In addition, fluctuations in currency exchange rates may favorably or unfavorably affect the values of foreign securities and the price of a Fund’s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, less stringent investor protection and disclosure standards, less reliable settlement practices, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, greater risk of new or inconsistent government treatment of or restrictions on issuers and instruments, and greater volatility in currency exchange rates, and are more susceptible to environmental problems.

Market Risk

The value of a Fund's portfolio securities may decline, at times sharply and unpredictably, as a result of unfavorable market-induced changes affecting particular industries, sectors, or issuers. Stock and bond markets can decline significantly in response to issuer, market, economic, industry, political, regulatory, geopolitical, public health, and other conditions, as well as investor perceptions of these conditions. A Fund is subject to risks affecting issuers, such as management performance, financial leverage, industry problems, and reduced demand for goods or services.

Notes to Portfolio of Investments (Unaudited) (Continued)

Federal Income Tax

It is each Fund’s intent to continue to comply with the provisions of Subchapter M of the Internal Revenue Code of 1986, as amended, applicable to a regulated investment company. Under such provisions, the Funds would not be subject to U.S. federal income taxes on their ordinary income and net realized capital gains to the extent they are distributed or deemed to have been distributed to their shareholders. Therefore, the Funds have not made any provision for U.S. federal income tax.

Dividends and Distributions to Shareholders

Dividends from net investment income and distributions of any net realized capital gains of each Fund are declared and paid annually and at other times as may be required to satisfy tax or regulatory requirements.

Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from generally accepted accounting principles. As a result, net investment income and net realized capital gains on investment transactions for a reporting period may differ significantly from distributions during such period.

3. Federal Income Tax Information

At September 30, 2024, the aggregate cost of investments and the unrealized appreciation (depreciation) in the value of all investments owned by the Fund(s), as computed on a U.S. federal income tax basis, were as follows:

	Federal Income Tax Cost		Tax Basis Unrealized Appreciation		Tax Basis Unrealized (Depreciation)		Net Unrealized Appreciation (Depreciation)
Blend Fund	$	602,866,477	$	152,791,190	$	(26,914,778)	$	125,876,412
Dynamic Bond Fund		223,989,689		2,681,042		(13,221,127)		(10,540,085)
Equity Fund		668,189,308		216,436,173		(3,855,988)		212,580,185
Equity Rotation Fund		53,808,405		3,295,900		(1,617,320)		1,678,580
High Yield Fund		52,171,959		1,371,520		(891,511)		480,009
Inflation-Protected and Income Fund		178,986,371		1,521,254		(3,755,605)		(2,234,351)
MML iShares^® 60/40 Allocation Fund		44,016,122		5,233,721		(421,687)		4,812,034
MML iShares^® 80/20 Allocation Fund		74,937,136		13,124,579		(71,266)		13,053,313
Managed Bond Fund		756,057,853		9,080,954		(36,975,033)		(27,894,079)
Short-Duration Bond Fund		120,996,696		1,252,541		(3,169,631)		(1,917,090)
Small Cap Equity Fund		94,073,049		42,500,365		(3,249,568)		39,250,797
Strategic Emerging Markets Fund		41,640,459		7,240,502		(1,462,961)		5,777,541

4. New Accounting Pronouncements

In December 2022, FASB issued Accounting Standards Update 2022-06, ''Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848'' (''ASU 2022-06''). ASU 2022-06 is an update of ASU 2020-04, which responded to concerns about structural risks of interbank offered rates, and particularly the risk of cessation of LIBOR. ASU 2020-04 provides optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. ASU 2020-04 is elective and applies to all entities, subject to meeting certain criteria, that have contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. ASU 2022-06 defers the sunset date provision included in Topic 848. The amendments in this update are effective immediately through December 31, 2024, for all entities. Management has evaluated ASU 2022-06 and there is no material impact on the financial statements.

MML Series Investment Fund II NPORT-PMML Equity Rotation Fund (Sep 2024 report)