iShares Core Total USD Bond Market ETF

Fund Profile

Fund profile

Tickers

IUSB

Fund manager

iShares MBS ETF

Total assets

$29.40 bn

Liabilities

$1.83 bn

Net assets

$27.57 bn

Number of holdings

16.10 k

IUSB stock data

1M 3M 6M 1Y

Top 200 of 16102 Holdings

As of Apr 2024

Security	$Holding	Balance	% of Fund	Category	Position	Country
U.S. Treasury Bills	499.56 mm	500.00 mm principal	1.81	Debt	Long	USA
U.S. Treasury Bills	499.41 mm	500.00 mm principal	1.81	Debt	Long	USA
BlackRock Cash Funds: Treasury, SL Agency Shares	403.66 mm	403.66 mm shares	1.46	Short-term investment vehicle	Long	USA
BlackRock Cash Funds: Treasury, SL Agency Shares	277.54 mm	277.46 mm shares	1.01	Short-term investment vehicle	Long	USA
U.S. Treasury Notes	168.02 mm	170.40 mm principal	0.61	Debt	Long	USA
U.S. Treasury Notes	158.47 mm	160.73 mm principal	0.57	Debt	Long	USA
U.S. Treasury Notes	127.46 mm	129.34 mm principal	0.46	Debt	Long	USA
U.S. Treasury Notes	124.71 mm	125.68 mm principal	0.45	Debt	Long	USA
U.S. Treasury Notes	118.42 mm	137.40 mm principal	0.43	Debt	Long	USA
U.S. Treasury Notes	117.75 mm	127.80 mm principal	0.43	Debt	Long	USA
U.S. Treasury Notes	116.56 mm	124.14 mm principal	0.42	Debt	Long	USA
U.S. Treasury Notes	112.66 mm	124.66 mm principal	0.41	Debt	Long	USA
U.S. Treasury Notes	98.10 mm	100.40 mm principal	0.36	Debt	Long	USA
U.S. Treasury Notes	93.11 mm	94.87 mm principal	0.34	Debt	Long	USA
U.S. Treasury Notes	88.62 mm	96.89 mm principal	0.32	Debt	Long	USA
Uniform Mortgage-Backed Security, TBA	86.96 mm	109.93 mm principal	0.32	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	86.56 mm	105.90 mm principal	0.31	Debt	Long	USA
U.S. Treasury Notes	81.47 mm	88.50 mm principal	0.30	Debt	Long	USA
U.S. Treasury Notes	81.05 mm	84.41 mm principal	0.29	Debt	Long	USA
U.S. Treasury Notes	80.86 mm	88.54 mm principal	0.29	Debt	Long	USA
U.S. Treasury Notes	80.56 mm	101.85 mm principal	0.29	Debt	Long	USA
Uniform Mortgage-Backed Security, TBA	79.88 mm	96.75 mm principal	0.29	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	79.75 mm	81.20 mm principal	0.29	Debt	Long	USA
U.S. Treasury Notes	79.25 mm	80.47 mm principal	0.29	Debt	Long	USA
U.S. Treasury Notes	78.09 mm	78.70 mm principal	0.28	Debt	Long	USA
U.S. Treasury Notes	76.43 mm	77.45 mm principal	0.28	Debt	Long	USA
U.S. Treasury Notes	75.18 mm	75.98 mm principal	0.27	Debt	Long	USA
Fannie Mae Pool	74.78 mm	98.85 mm principal	0.27	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	72.71 mm	73.70 mm principal	0.26	Debt	Long	USA
U.S. Treasury Notes	72.23 mm	73.72 mm principal	0.26	Debt	Long	USA
U.S. Treasury Notes	71.42 mm	82.90 mm principal	0.26	Debt	Long	USA
U.S. Treasury Bonds	71.08 mm	81.50 mm principal	0.26	Debt	Long	USA
U.S. Treasury Notes	70.93 mm	72.90 mm principal	0.26	Debt	Long	USA
U.S. Treasury Notes	70.91 mm	72.36 mm principal	0.26	Debt	Long	USA
U.S. Treasury Notes	69.33 mm	69.85 mm principal	0.25	Debt	Long	USA
U.S. Treasury Notes	69.23 mm	79.80 mm principal	0.25	Debt	Long	USA
U.S. Treasury Notes	68.94 mm	79.50 mm principal	0.25	Debt	Long	USA
U.S. Treasury Bonds	68.61 mm	116.60 mm principal	0.25	Debt	Long	USA
U.S. Treasury Bonds	68.20 mm	68.56 mm principal	0.25	Debt	Long	USA
Fannie Mae Pool	68.11 mm	89.92 mm principal	0.25	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	67.65 mm	68.17 mm principal	0.25	Debt	Long	USA
U.S. Treasury Notes	67.08 mm	69.23 mm principal	0.24	Debt	Long	USA
U.S. Treasury Notes	66.53 mm	81.31 mm principal	0.24	Debt	Long	USA
U.S. Treasury Notes	65.54 mm	74.60 mm principal	0.24	Debt	Long	USA
U.S. Treasury Notes	65.38 mm	69.04 mm principal	0.24	Debt	Long	USA
U.S. Treasury Notes	63.75 mm	65.36 mm principal	0.23	Debt	Long	USA
U.S. Treasury Bonds	63.27 mm	70.66 mm principal	0.23	Debt	Long	USA
U.S. Treasury Notes	63.17 mm	72.40 mm principal	0.23	Debt	Long	USA
U.S. Treasury Bonds	62.30 mm	63.50 mm principal	0.23	Debt	Long	USA
U.S. Treasury Notes	62.27 mm	64.91 mm principal	0.23	Debt	Long	USA
U.S. Treasury Notes	61.97 mm	71.40 mm principal	0.22	Debt	Long	USA
U.S. Treasury Notes	60.11 mm	60.36 mm principal	0.22	Debt	Long	USA
U.S. Treasury Notes	59.87 mm	60.35 mm principal	0.22	Debt	Long	USA
U.S. Treasury Notes	59.34 mm	60.80 mm principal	0.22	Debt	Long	USA
U.S. Treasury Bonds	59.31 mm	63.50 mm principal	0.22	Debt	Long	USA
U.S. Treasury Notes	58.71 mm	63.25 mm principal	0.21	Debt	Long	USA
U.S. Treasury Notes	58.40 mm	60.91 mm principal	0.21	Debt	Long	USA
U.S. Treasury Notes	55.26 mm	55.00 mm principal	0.20	Debt	Long	USA
U.S. Treasury Notes	55.08 mm	55.40 mm principal	0.20	Debt	Long	USA
U.S. Treasury Notes	54.49 mm	55.55 mm principal	0.20	Debt	Long	USA
U.S. Treasury Notes	54.12 mm	58.50 mm principal	0.20	Debt	Long	USA
U.S. Treasury Notes	54.10 mm	56.50 mm principal	0.20	Debt	Long	USA
U.S. Treasury Notes	53.91 mm	55.35 mm principal	0.20	Debt	Long	USA
U.S. Treasury Notes	52.32 mm	53.40 mm principal	0.19	Debt	Long	USA
U.S. Treasury Bonds	51.48 mm	62.98 mm principal	0.19	Debt	Long	USA
U.S. Treasury Notes	51.09 mm	64.70 mm principal	0.19	Debt	Long	USA
U.S. Treasury Notes	50.41 mm	54.50 mm principal	0.18	Debt	Long	USA
U.S. Treasury Bonds	50.01 mm	57.24 mm principal	0.18	Debt	Long	USA
U.S. Treasury Notes	50.00 mm	52.97 mm principal	0.18	Debt	Long	USA
U.S. Treasury Notes	49.84 mm	57.00 mm principal	0.18	Debt	Long	USA
U.S. Treasury Notes	49.19 mm	54.00 mm principal	0.18	Debt	Long	USA
U.S. Treasury Bonds	48.83 mm	53.32 mm principal	0.18	Debt	Long	USA
U.S. Treasury Notes	48.75 mm	53.70 mm principal	0.18	Debt	Long	USA
U.S. Treasury Notes	48.11 mm	51.70 mm principal	0.17	Debt	Long	USA
Uniform Mortgage-Backed Security, TBA	48.00 mm	55.72 mm principal	0.17	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	47.96 mm	48.70 mm principal	0.17	Debt	Long	USA
U.S. Treasury Notes	47.83 mm	49.80 mm principal	0.17	Debt	Long	USA
U.S. Treasury Notes	47.65 mm	52.00 mm principal	0.17	Debt	Long	USA
Uniform Mortgage-Backed Security, TBA	47.64 mm	53.27 mm principal	0.17	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	47.22 mm	52.00 mm principal	0.17	Debt	Long	USA
Freddie Mac Multifamily Structured Pass Through Certificates	47.16 mm	50.00 mm principal	0.17	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	47.10 mm	50.70 mm principal	0.17	Debt	Long	USA
U.S. Treasury Bonds	46.37 mm	56.76 mm principal	0.17	Debt	Long	USA
U.S. Treasury Notes	46.31 mm	47.69 mm principal	0.17	Debt	Long	USA
U.S. Treasury Notes	45.93 mm	50.50 mm principal	0.17	Debt	Long	USA
U.S. Treasury Notes	45.75 mm	47.48 mm principal	0.17	Debt	Long	USA
U.S. Treasury Bonds	45.57 mm	48.00 mm principal	0.17	Debt	Long	USA
U.S. Treasury Notes	45.40 mm	57.00 mm principal	0.16	Debt	Long	USA
U.S. Treasury Notes	44.99 mm	46.94 mm principal	0.16	Debt	Long	USA
U.S. Treasury Notes	44.86 mm	47.06 mm principal	0.16	Debt	Long	USA
U.S. Treasury Notes	44.79 mm	47.70 mm principal	0.16	Debt	Long	USA
U.S. Treasury Notes	44.17 mm	46.03 mm principal	0.16	Debt	Long	USA
U.S. Treasury Notes	44.17 mm	47.65 mm principal	0.16	Debt	Long	USA
Ginnie Mae	43.39 mm	52.93 mm principal	0.16	ABS-mortgage backed security	Long	USA
U.S. Treasury Bonds	43.21 mm	77.90 mm principal	0.16	Debt	Long	USA
U.S. Treasury Notes	43.17 mm	54.83 mm principal	0.16	Debt	Long	USA
Uniform Mortgage-Backed Security, TBA	43.07 mm	48.65 mm principal	0.16	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	42.99 mm	46.65 mm principal	0.16	Debt	Long	USA
Ginnie Mae	42.88 mm	42.78 mm principal	0.16	ABS-mortgage backed security	Long	USA
Ginnie Mae	42.77 mm	44.68 mm principal	0.16	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	42.76 mm	44.60 mm principal	0.16	Debt	Long	USA
U.S. Treasury Notes	42.72 mm	44.59 mm principal	0.15	Debt	Long	USA
Uniform Mortgage-Backed Security, TBA	42.56 mm	46.92 mm principal	0.15	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	42.48 mm	43.89 mm principal	0.15	Debt	Long	USA
U.S. Treasury Notes	42.46 mm	44.20 mm principal	0.15	Debt	Long	USA
U.S. Treasury Notes	42.01 mm	43.15 mm principal	0.15	Debt	Long	USA
U.S. Treasury Bonds	41.88 mm	75.00 mm principal	0.15	Debt	Long	USA
Freddie Mac Pool	41.84 mm	54.92 mm principal	0.15	ABS-mortgage backed security	Long	USA
U.S. Treasury Bonds	41.52 mm	59.00 mm principal	0.15	Debt	Long	USA
Freddie Mac Pool	41.24 mm	54.43 mm principal	0.15	ABS-mortgage backed security	Long	USA
U.S. Treasury Bonds	41.10 mm	52.50 mm principal	0.15	Debt	Long	USA
U.S. Treasury Notes	40.27 mm	41.50 mm principal	0.15	Debt	Long	USA
U.S. Treasury Notes	40.18 mm	41.34 mm principal	0.15	Debt	Long	USA
U.S. Treasury Bonds	40.11 mm	61.05 mm principal	0.15	Debt	Long	USA
U.S. Treasury Notes	40.02 mm	41.63 mm principal	0.15	Debt	Long	USA
Uniform Mortgage-Backed Security, TBA	39.93 mm	47.50 mm principal	0.14	ABS-mortgage backed security	Long	USA
Fannie Mae Pool	39.48 mm	51.96 mm principal	0.14	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	39.42 mm	42.40 mm principal	0.14	Debt	Long	USA
U.S. Treasury Notes	39.26 mm	38.92 mm principal	0.14	Debt	Long	USA
U.S. Treasury Notes	39.25 mm	45.10 mm principal	0.14	Debt	Long	USA
Fannie Mae Pool	38.89 mm	49.08 mm principal	0.14	ABS-mortgage backed security	Long	USA
Uniform Mortgage-Backed Security, TBA	38.62 mm	51.18 mm principal	0.14	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	38.25 mm	38.44 mm principal	0.14	Debt	Long	USA
Ginnie Mae II Pool	38.24 mm	48.56 mm principal	0.14	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	38.22 mm	40.42 mm principal	0.14	Debt	Long	USA
Freddie Mac Pool	38.15 mm	50.50 mm principal	0.14	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	37.71 mm	38.70 mm principal	0.14	Debt	Long	USA
U.S. Treasury Notes	37.46 mm	40.00 mm principal	0.14	Debt	Long	USA
U.S. Treasury Notes	37.34 mm	43.40 mm principal	0.14	Debt	Long	USA
U.S. Treasury Notes	37.28 mm	43.40 mm principal	0.14	Debt	Long	USA
U.S. Treasury Bonds	37.15 mm	64.70 mm principal	0.13	Debt	Long	USA
U.S. Treasury Bonds	36.97 mm	60.63 mm principal	0.13	Debt	Long	USA
U.S. Treasury Bonds	36.95 mm	53.85 mm principal	0.13	Debt	Long	USA
U.S. Treasury Bonds	36.37 mm	41.50 mm principal	0.13	Debt	Long	USA
Uniform Mortgage-Backed Security, TBA	36.28 mm	36.63 mm principal	0.13	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	36.11 mm	38.05 mm principal	0.13	Debt	Long	USA
Fannie Mae Pool	36.05 mm	47.45 mm principal	0.13	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	35.97 mm	37.23 mm principal	0.13	Debt	Long	USA
U.S. Treasury Notes	35.84 mm	38.25 mm principal	0.13	Debt	Long	USA
Fannie Mae Pool	35.81 mm	45.09 mm principal	0.13	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	35.70 mm	36.06 mm principal	0.13	Debt	Long	USA
U.S. Treasury Bonds	35.66 mm	55.70 mm principal	0.13	Debt	Long	USA
U.S. Treasury Notes	35.57 mm	38.00 mm principal	0.13	Debt	Long	USA
U.S. Treasury Notes	35.51 mm	37.43 mm principal	0.13	Debt	Long	USA
U.S. Treasury Notes	35.23 mm	37.60 mm principal	0.13	Debt	Long	USA
U.S. Treasury Notes	35.21 mm	36.87 mm principal	0.13	Debt	Long	USA
U.S. Treasury Bonds	35.02 mm	55.50 mm principal	0.13	Debt	Long	USA
U.S. Treasury Bonds	34.66 mm	48.00 mm principal	0.13	Debt	Long	USA
U.S. Treasury Notes	34.50 mm	37.00 mm principal	0.13	Debt	Long	USA
Uniform Mortgage-Backed Security, TBA	34.41 mm	35.45 mm principal	0.12	ABS-mortgage backed security	Long	USA
Uniform Mortgage-Backed Security, TBA	34.41 mm	36.31 mm principal	0.12	ABS-mortgage backed security	Long	USA
Ginnie Mae II Pool	34.35 mm	43.53 mm principal	0.12	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	34.05 mm	39.58 mm principal	0.12	Debt	Long	USA
U.S. Treasury Notes	34.01 mm	37.00 mm principal	0.12	Debt	Long	USA
Fannie Mae Pool	33.96 mm	40.79 mm principal	0.12	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	33.88 mm	37.30 mm principal	0.12	Debt	Long	USA
Ginnie Mae II Pool	33.87 mm	39.75 mm principal	0.12	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	33.82 mm	34.51 mm principal	0.12	Debt	Long	USA
U.S. Treasury Bonds	33.71 mm	46.00 mm principal	0.12	Debt	Long	USA
U.S. Treasury Notes	33.65 mm	35.10 mm principal	0.12	Debt	Long	USA
U.S. Treasury Notes	33.64 mm	36.90 mm principal	0.12	Debt	Long	USA
U.S. Treasury Notes	33.59 mm	34.48 mm principal	0.12	Debt	Long	USA
U.S. Treasury Notes	33.59 mm	36.05 mm principal	0.12	Debt	Long	USA
U.S. Treasury Notes	33.58 mm	37.50 mm principal	0.12	Debt	Long	USA
U.S. Treasury Notes	33.48 mm	39.10 mm principal	0.12	Debt	Long	USA
U.S. Treasury Notes	33.36 mm	35.45 mm principal	0.12	Debt	Long	USA
U.S. Treasury Notes	33.23 mm	38.50 mm principal	0.12	Debt	Long	USA
Uniform Mortgage-Backed Security, TBA	32.68 mm	35.47 mm principal	0.12	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	32.46 mm	32.88 mm principal	0.12	Debt	Long	USA
U.S. Treasury Bonds	32.10 mm	47.34 mm principal	0.12	Debt	Long	USA
Ginnie Mae II Pool	31.95 mm	40.56 mm principal	0.12	ABS-mortgage backed security	Long	USA
Freddie Mac Pool	31.91 mm	41.91 mm principal	0.12	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	31.72 mm	32.56 mm principal	0.12	Debt	Long	USA
U.S. Treasury Notes	31.64 mm	36.60 mm principal	0.11	Debt	Long	USA
Ginnie Mae II Pool	31.59 mm	38.48 mm principal	0.11	ABS-mortgage backed security	Long	USA
Uniform Mortgage-Backed Security, TBA	31.39 mm	36.42 mm principal	0.11	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	31.19 mm	40.00 mm principal	0.11	Debt	Long	USA
Fannie Mae Pool	30.93 mm	40.82 mm principal	0.11	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	30.47 mm	32.60 mm principal	0.11	Debt	Long	USA
U.S. Treasury Notes	30.39 mm	33.00 mm principal	0.11	Debt	Long	USA
Ginnie Mae II Pool	30.32 mm	36.92 mm principal	0.11	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	30.21 mm	30.90 mm principal	0.11	Debt	Long	USA
Ginnie Mae	30.13 mm	34.21 mm principal	0.11	ABS-mortgage backed security	Long	USA
Ginnie Mae II Pool	30.12 mm	36.62 mm principal	0.11	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	30.03 mm	31.00 mm principal	0.11	Debt	Long	USA
U.S. Treasury Notes	30.00 mm	34.40 mm principal	0.11	Debt	Long	USA
U.S. Treasury Bonds	29.85 mm	42.00 mm principal	0.11	Debt	Long	USA
U.S. Treasury Notes	29.68 mm	34.60 mm principal	0.11	Debt	Long	USA
U.S. Treasury Notes	29.64 mm	31.85 mm principal	0.11	Debt	Long	USA
U.S. Treasury Notes	29.63 mm	30.17 mm principal	0.11	Debt	Long	USA
U.S. Treasury Notes	29.37 mm	31.00 mm principal	0.11	Debt	Long	USA
U.S. Treasury Notes	29.14 mm	29.80 mm principal	0.11	Debt	Long	USA
Ginnie Mae II Pool	29.08 mm	35.43 mm principal	0.11	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	29.02 mm	32.35 mm principal	0.11	Debt	Long	USA
U.S. Treasury Bonds	29.01 mm	45.70 mm principal	0.11	Debt	Long	USA
Freddie Mac Pool	28.96 mm	31.97 mm principal	0.11	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	28.56 mm	29.59 mm principal	0.10	Debt	Long	USA
Fannie Mae Pool	28.41 mm	35.85 mm principal	0.10	ABS-mortgage backed security	Long	USA
U.S. Treasury Notes	28.33 mm	30.00 mm principal	0.10	Debt	Long	USA
Fannie Mae Pool	28.30 mm	35.48 mm principal	0.10	ABS-mortgage backed security	Long	USA