Oberweis Asset Management 13FHR Quarterly holdings report by institutional manager | SEC 14 Feb 24

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

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COLUMN 1	COLUMN 2	COLUMN 3	COLUMN 4	COLUMN 5			COLUMN 6	COLUMN 7	COLUMN 8
			VALUE	SHRS OR	SH/	PUT/	INVESTMENT	OTHER	VOTING AUTHORITY
NAME OF ISSUER	TITLE OF CLASS	CUSIP	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
1st Source Corp.	com	336901103	3,297,000	60,000	SH		SOLE		60,000	0	0
AAON, Inc.	com	000360206	2,681,481	36,300	SH		SOLE		36,300	0	0
ACI Worldwide Inc.	com	004498101	4,414,417	144,262	SH		SOLE		144,262	0	0
ACM Research, Inc. Class A	com	00108J109	7,687,036	393,400	SH		SOLE		393,400	0	0
ADMA Biologics, Inc.	com	000899104	12,252,364	2,710,700	SH		SOLE		2,710,700	0	0
AMR Corp Escrow	com	001ESC102	0	18,000	SH		SOLE		18,000	0	0
ANI Pharmaceuticals, Inc.	com	00182C103	2,398,590	43,500	SH		SOLE		43,500	0	0
ATI, Inc.	com	01741R102	4,660,675	102,500	SH		SOLE		102,500	0	0
Abercrombie & Fitch Co.	com	002896207	4,852,100	55,000	SH		SOLE		55,000	0	0
Acadia Healthcare Co., Inc.	com	00404A109	7,013,952	90,200	SH		SOLE		90,200	0	0
Adtalem Global Education Inc.	com	00737L103	5,099,175	86,500	SH		SOLE		86,500	0	0
Aehr Test Systems	com	00760J108	28,949,589	1,091,202	SH		SOLE		1,072,112	0	19,090
Aerovironment, Inc.	com	008073108	8,797,592	69,800	SH		SOLE		69,800	0	0
Allegro MicroSystems, Inc.	com	01749D105	7,809,055	257,980	SH		SOLE		219,220	0	38,760
Alphatec Hldgs Inc.	com	02081G201	24,294,160	1,607,820	SH		SOLE		1,465,320	0	142,500
American Superconductor	com	030111207	4,186,412	375,800	SH		SOLE		375,800	0	0
Amgen, Inc.	com	031162100	308,012	1,069	SH		SOLE		0	0	1,069
Amphastar Pharmaceuticals, Inc	com	03209R103	21,045,390	340,265	SH		SOLE		322,520	0	17,745
Apple, Inc.	com	037833100	650,917	3,381	SH		SOLE		120	0	3,261
Applied Optoelectronics Inc.	com	03823U102	17,231,798	891,915	SH		SOLE		891,915	0	0
Arcos Dorados Holdings, Inc.	com	G0457F107	380,700	30,000	SH		SOLE		30,000	0	0
Artivion, Inc	com	228903100	4,613,040	258,000	SH		SOLE		258,000	0	0
Assurant, Inc.	com	04621X108	5,172,643	30,700	SH		SOLE		30,700	0	0
Atricure, Inc.	com	04963C209	2,466,179	69,100	SH		SOLE		69,100	0	0
AvePoint, Inc.	com	053604104	1,979,431	241,100	SH		SOLE		241,100	0	0
Aviat Networks, Inc.	com	05366Y201	4,219,901	129,207	SH		SOLE		129,207	0	0
Axcelis Technologies	com	054540208	31,816,718	245,329	SH		SOLE		217,039	0	28,290
Axonics, Inc.	com	05465P101	11,106,188	178,470	SH		SOLE		159,450	0	19,020
BJ's Restaurants, Inc.	com	09180C106	5,351,086	148,600	SH		SOLE		148,600	0	0
Bel Fuse, Inc.	com	077347300	8,299,511	124,300	SH		SOLE		124,300	0	0
Blackbaud	com	09227Q100	2,609,670	30,100	SH		SOLE		30,100	0	0
Blue Bird Corporation	com	095306106	7,729,432	286,700	SH		SOLE		286,700	0	0
Boot Barn Hldgs, Inc.	com	099406100	3,960,816	51,600	SH		SOLE		51,600	0	0
CECO Environmental Corp.	com	125141101	8,653,476	426,700	SH		SOLE		426,700	0	0
Cadence Design System, Inc.	com	127387108	3,431,862	12,600	SH		SOLE		12,600	0	0
Cadre Hldgs, Inc.	com	12763L105	3,367,936	102,400	SH		SOLE		102,400	0	0
Caleres Inc.	com	129500104	2,716,532	88,400	SH		SOLE		88,400	0	0
Camtek, Ltd.	com	M20791105	12,105,422	174,480	SH		SOLE		174,480	0	0
Carpenter Technology Corp.	com	144285103	2,527,560	35,700	SH		SOLE		35,700	0	0
Carrols Restaurant Group, Inc.	com	14574X104	4,913,180	623,500	SH		SOLE		623,500	0	0
Catalyst Pharmaceuticals, Inc.	com	14888U101	5,859,966	348,600	SH		SOLE		348,600	0	0
Clean Harbors, Inc.	com	184496107	9,956,668	57,055	SH		SOLE		48,780	0	8,275
Clear Secure, Inc.	com	18467V109	6,267,275	303,500	SH		SOLE		303,500	0	0
Clearwater Paper Corp	com	18538R103	3,752,868	103,900	SH		SOLE		103,900	0	0
Comfort Systems USA Inc.	com	199908104	3,640,359	17,700	SH		SOLE		17,700	0	0
Comstock Res	com	205768302	639,809	72,295	SH		SOLE		72,295	0	0
Constellium NV Cl A	com	F21107101	36,933,405	1,850,371	SH		SOLE		1,190,139	0	660,232
Crocs, Inc.	com	227046109	4,670,500	50,000	SH		SOLE		40,210	0	9,790
Dada Nexus Limited	com	23344D108	75,696	22,800	SH		SOLE		22,800	0	0
Deckers Outdoor Corp.	com	243537107	8,051,239	12,045	SH		SOLE		7,750	0	4,295
Despegar Com Corp.	com	G27358103	212,850	22,500	SH		SOLE		22,500	0	0
Dorian LPG Ltd.	com	Y2106R110	2,873,485	65,500	SH		SOLE		65,500	0	0
Dycom Industries, Inc.	com	267475101	2,647,070	23,000	SH		SOLE		23,000	0	0
Dynavax Technologies Corp.	com	268158201	5,835,252	417,400	SH		SOLE		417,400	0	0
EPlus, Inc.	com	294268107	2,658,672	33,300	SH		SOLE		33,300	0	0
ESAB Corporation	com	29605J106	6,851,642	79,100	SH		SOLE		79,100	0	0
EZCorp, Inc.	com	302301106	5,729,070	655,500	SH		SOLE		655,500	0	0
Employers Holdings, Inc.	com	292218104	3,250,500	82,500	SH		SOLE		82,500	0	0
Encompass Health Corporation	com	29261A100	9,690,746	145,245	SH		SOLE		135,300	0	9,945
Enerpac Tool Group Corp.	com	292765104	2,216,717	71,300	SH		SOLE		71,300	0	0
Evolent Health, Inc.	com	30050B101	7,086,256	214,540	SH		SOLE		195,960	0	18,580
Evolus, Inc.	com	30052C107	3,910,842	371,400	SH		SOLE		371,400	0	0
Fabrinet	com	G3323L100	6,318,956	33,200	SH		SOLE		33,200	0	0
Fastly, Inc.	com	31188V100	4,446,440	249,800	SH		SOLE		249,800	0	0
Federal Signal Corp.	com	313855108	7,584,214	98,830	SH		SOLE		98,700	0	130
First Merchants Corporation	com	320817109	2,936,736	79,200	SH		SOLE		79,200	0	0
FirstCash Holdings, Inc	com	33768G107	8,042,538	74,200	SH		SOLE		74,200	0	0
Flowserve Corporation	com	34354P105	10,110,081	245,271	SH		SOLE		228,580	0	16,691
Formfactor Inc.	com	346375108	6,640,232	159,200	SH		SOLE		159,200	0	0
Frontdoor, Inc.	com	35905A109	9,548,142	271,100	SH		SOLE		268,000	0	3,100
Full House Resorts, Inc.	com	359678109	1,198,278	223,143	SH		SOLE		223,143	0	0
G-III Apparel Group Ltd.	com	36237H101	6,680,468	196,600	SH		SOLE		196,600	0	0
Gibraltar Inds	com	374689107	3,419,834	43,300	SH		SOLE		43,300	0	0
Grand Canyon Education, Inc.	com	38526M106	3,538,672	26,800	SH		SOLE		26,800	0	0
Grocery Outlet Hldg Corp.	com	39874R101	3,752,832	139,200	SH		SOLE		139,200	0	0
H&E Equipment Services, Inc.	com	404030108	5,174,448	98,900	SH		SOLE		98,900	0	0
HNI Corp.	com	404251100	6,475,284	154,800	SH		SOLE		154,800	0	0
Haemonetics Corp.	com	405024100	9,053,799	105,880	SH		SOLE		97,810	0	8,070
Halozyme Therapeutics, Inc.	com	40637H109	3,559,248	96,300	SH		SOLE		96,300	0	0
Hawkins, Inc.	com	420261109	2,640,750	37,500	SH		SOLE		37,500	0	0
HealthEquity Inc.	com	42226A107	2,565,810	38,700	SH		SOLE		38,700	0	0
Helix Energy Solutions Group,	com	42330P107	3,674,072	357,400	SH		SOLE		357,400	0	0
Heritage Financial Corporation	com	42722X106	3,003,156	140,400	SH		SOLE		140,400	0	0
Hibbett, Inc.	com	428567101	2,455,882	34,100	SH		SOLE		34,100	0	0
Huron Consulting Group, Inc.	com	447462102	4,883,000	47,500	SH		SOLE		47,500	0	0
ICF International, Inc.	com	44925C103	8,863,349	66,100	SH		SOLE		66,100	0	0
Informatica Corp.	com	45674M101	5,169,819	182,100	SH		SOLE		182,100	0	0
Integer Holdings Corporation	com	45826H109	7,034,680	71,000	SH		SOLE		71,000	0	0
Inter Parfums	com	458334109	6,970,084	48,400	SH		SOLE		48,400	0	0
International Seaways, Inc.	com	Y41053102	4,302,408	94,600	SH		SOLE		94,600	0	0
JELD-WEN Holding, Inc.	com	47580P103	4,912,576	260,200	SH		SOLE		260,200	0	0
JP Morgan Chase & Company Inc.	com	46625H100	646,723	3,802	SH		SOLE		140	0	3,662
Janus International Group, Inc	com	47103N106	6,895,620	528,400	SH		SOLE		528,400	0	0
Johnson & Johnson	com	478160104	339,292	2,165	SH		SOLE		0	0	2,165
LeMaitre Vascular, Inc.	com	525558201	3,706,428	65,300	SH		SOLE		65,300	0	0
Legend Biotech Corp.	com	52490G102	962,720	16,000	SH		SOLE		16,000	0	0
Li Auto, Inc. ADR	com	50202M102	1,235,190	33,000	SH		SOLE		33,000	0	0
Liberty Energy, Inc.	com	53115L104	2,492,436	137,400	SH		SOLE		137,400	0	0
Light & Wonder Inc.	com	80874P109	2,471,511	30,100	SH		SOLE		30,100	0	0
Limbach Hldgs, Inc.	com	53263P105	4,523,992	99,494	SH		SOLE		99,494	0	0
LivaNova Plc	com	G5509L101	3,839,108	74,200	SH		SOLE		74,200	0	0
Liveramp Hldgs, Inc.	com	53815P108	5,265,320	139,000	SH		SOLE		139,000	0	0
M/I Homes, Inc.	com	55305B101	6,721,712	48,800	SH		SOLE		48,800	0	0
MGP Ingredients, Inc.	com	55303J106	6,349,614	64,450	SH		SOLE		64,300	0	150
MINISO Group Holding Limited	com	66981J102	1,640,160	80,400	SH		SOLE		80,400	0	0
MSA Safety Inc	com	553498106	4,744,123	28,100	SH		SOLE		28,100	0	0
Magnolia Oil & Gas Corp.	com	559663109	2,495,188	117,200	SH		SOLE		117,200	0	0
Mannkind Corp.	com	56400P706	2,630,992	722,800	SH		SOLE		722,800	0	0
Mastercard, Inc.	com	57636Q104	330,737	775	SH		SOLE		0	0	775
Matador Resources Company	com	576485205	3,002,208	52,800	SH		SOLE		52,800	0	0
Maximus, Inc.	com	577933104	5,065,144	60,400	SH		SOLE		60,400	0	0
McDonald's Corporation	com	580135101	249,935	843	SH		SOLE		0	0	843
McGrath RentCorp	com	580589109	3,122,082	26,100	SH		SOLE		26,100	0	0
Mercantile Bank Corp.	com	587376104	3,445,012	85,315	SH		SOLE		64,500	0	20,815
Merit Medical System Inc	com	589889104	8,134,556	107,090	SH		SOLE		100,720	0	6,370
Microsoft Corp.	com	594918104	1,028,469	2,735	SH		SOLE		0	0	2,735
Mirum Pharmaceuticals, Inc.	com	604749101	2,284,848	77,400	SH		SOLE		77,400	0	0
Modine Mfg Co Com	com	607828100	5,164,050	86,500	SH		SOLE		86,500	0	0
Monarch Casino & Resort, Inc.	com	609027107	4,045,275	58,500	SH		SOLE		58,500	0	0
NOV, Inc.	com	62955J103	3,181,932	156,900	SH		SOLE		156,900	0	0
Navitas Semiconductor Corp.	com	63942X106	7,746,393	959,900	SH		SOLE		959,100	0	800
NeoGenomics, Inc.	com	64049M209	6,353,886	392,700	SH		SOLE		392,700	0	0
Nextracker, Inc.	com	65290E101	4,834,920	103,200	SH		SOLE		103,200	0	0
OneSpaWorld Holdings Limited	com	P73684113	3,502,440	248,400	SH		SOLE		248,400	0	0
Onto Innovation, Inc.	com	683344105	6,819,340	44,600	SH		SOLE		44,600	0	0
Option Care Health Inc.	com	68404L201	3,830,553	113,700	SH		SOLE		113,700	0	0
Oshkosh Corp.	com	688239201	10,721,646	98,899	SH		SOLE		90,001	0	8,898
Osi Systems, Inc.	com	671044105	4,555,465	35,300	SH		SOLE		35,300	0	0
Oxford Inds, Inc.	com	691497309	3,150,000	31,500	SH		SOLE		31,500	0	0
PDD Holdings Inc.	com	722304102	3,657,750	25,000	SH		SOLE		25,000	0	0
Parsons Corp.	com	70202L102	8,340,430	133,000	SH		SOLE		133,000	0	0
Pdf Solutions, Inc.	com	693282105	2,233,730	69,500	SH		SOLE		69,500	0	0
Perion Network, Ltd.	com	M78673114	14,085,672	456,290	SH		SOLE		426,820	0	29,470
PetlQ Inc	com	71639T106	6,011,900	304,400	SH		SOLE		304,400	0	0
Photronics, Inc.	com	719405102	7,764,075	247,500	SH		SOLE		247,500	0	0
Playa Hotels & Resorts N.V.	com	N70544106	6,067,975	701,500	SH		SOLE		701,500	0	0
Powell Industries Inc.	com	739128106	2,528,240	28,600	SH		SOLE		28,600	0	0
Power Integrations	com	739276103	8,062,792	98,195	SH		SOLE		89,392	0	8,803
Precision Drilling Corp.	com	74022D407	3,241,113	59,700	SH		SOLE		59,700	0	0
Preferred Bank	com	740367404	6,545,280	89,600	SH		SOLE		89,600	0	0
Primo Water Corp.	com	74167P108	3,624,040	240,800	SH		SOLE		240,800	0	0
Primoris Services Corp.	com	74164F103	6,970,779	209,900	SH		SOLE		209,900	0	0
Proto Labs Inc.	com	743713109	4,573,904	117,400	SH		SOLE		117,400	0	0
Quaker Chemical Corporation	com	747316107	5,762,340	27,000	SH		SOLE		27,000	0	0
Qualys, Inc.	com	74758T303	3,454,528	17,600	SH		SOLE		17,600	0	0
Quanterix Corp.	com	74766Q101	2,400,452	87,800	SH		SOLE		87,800	0	0
RPC, Inc.	com	749660106	6,247,170	858,128	SH		SOLE		804,079	0	54,048
Rapid7, Inc.	com	753422104	2,752,220	48,200	SH		SOLE		48,200	0	0
Resmed Inc.	com	761152107	249,429	1,450	SH		SOLE		0	0	1,450
Rev Group, Inc.	com	749527107	2,756,389	151,700	SH		SOLE		151,700	0	0
Rover Group, Inc.	com	77936F103	5,072,256	466,200	SH		SOLE		466,200	0	0
RxSight, Inc.	com	78349D107	3,350,592	83,100	SH		SOLE		83,100	0	0
SI-BONE, Inc.	com	825704109	6,026,229	287,100	SH		SOLE		287,100	0	0
SPX Technologies, Inc.	com	78473E103	7,373,730	73,000	SH		SOLE		73,000	0	0
Silicon Motion Techn ADR	com	82706C108	4,681,028	76,400	SH		SOLE		76,400	0	0
Simpson Manufacturing	com	829073105	3,326,064	16,800	SH		SOLE		16,800	0	0
Skyward Specialty Ins Group	com	830940102	2,771,384	81,800	SH		SOLE		81,800	0	0
Skywest Inc	com	830879102	6,979,140	133,700	SH		SOLE		133,700	0	0
Sterling Construction Co., Inc	com	859241101	7,737,840	88,000	SH		SOLE		88,000	0	0
Stride, Inc.	com	86333M108	2,523,225	42,500	SH		SOLE		42,500	0	0
Sun Country Airlines Holdings,	com	866683105	4,682,821	297,700	SH		SOLE		297,700	0	0
Super Micro Computer Inc.	com	86800U104	5,429,366	19,100	SH		SOLE		19,100	0	0
Taiwan Semiconductor	com	874039100	1,768,000	17,000	SH		SOLE		17,000	0	0
Tal Education Group ADR	com	874080104	694,650	55,000	SH		SOLE		55,000	0	0
The Gorman-Rupp Co.	com	383082104	2,448,017	68,900	SH		SOLE		68,900	0	0
The Travelers Co., Inc.	com	89417E109	393,581	2,066	SH		SOLE		0	0	2,066
The Vita Coco Co., Inc.	com	92846Q107	2,734,290	106,600	SH		SOLE		106,600	0	0
Thermon Group Hldgs Inc.	com	88362T103	6,211,099	190,700	SH		SOLE		190,700	0	0
TransMedics Group, Inc.	com	89377M109	16,804,197	212,900	SH		SOLE		212,900	0	0
Transcat, Inc.	com	893529107	2,383,394	21,800	SH		SOLE		21,800	0	0
Trex Company, Inc.	com	89531P105	3,319,879	40,100	SH		SOLE		40,100	0	0
Ultra Clean Holdings	com	90385V107	8,435,994	247,100	SH		SOLE		247,100	0	0
Universal Display Corp.	com	91347P105	12,726,865	66,542	SH		SOLE		60,520	0	6,022
Upwork, Inc.	com	91688F104	5,901,903	396,900	SH		SOLE		396,900	0	0
V2X, Inc.	com	92242T101	4,676,508	100,700	SH		SOLE		100,700	0	0
VSE Corp.	com	918284100	4,283,643	66,300	SH		SOLE		66,300	0	0
VTEX	com	G9470A102	322,672	46,900	SH		SOLE		46,900	0	0
Veeco Instruments, Inc.	com	922417100	7,447,200	240,000	SH		SOLE		240,000	0	0
Veracyte, Inc.	com	92337F107	18,068,843	656,810	SH		SOLE		623,740	0	33,070
Vertiv Holdings Co.	com	92537N108	11,223,263	233,672	SH		SOLE		218,002	0	15,670
Visteon Corp.	com	92839U206	5,466,873	43,770	SH		SOLE		43,770	0	0
Vital Energy, Inc.	com	516806205	4,535,353	99,700	SH		SOLE		99,700	0	0
Weatherford International PLC	com	G48833118	23,485,070	240,060	SH		SOLE		219,860	0	20,200
Weave Communications, Inc.	com	94724R108	6,989,818	609,400	SH		SOLE		609,400	0	0
Wingstop, Inc.	com	974155103	4,079,622	15,900	SH		SOLE		15,900	0	0
Woodward, Inc.	com	980745103	7,078,760	52,000	SH		SOLE		52,000	0	0
Xenacare Hldgs, Inc.	com	98401A106	0	140,000	SH		SOLE		0	0	140,000
Zeta Global Holdings Corp.	com	98956A105	8,250,934	935,480	SH		SOLE		857,280	0	78,200
e.l.f. Beauty, Inc.	com	26856L103	4,113,690	28,500	SH		SOLE		28,500	0	0
iQIYI, Inc.	com	46267X108	97,600	20,000	SH		SOLE		20,000	0	0
SPDR S&P 500 ETF Trust	com	78462F103	1,705,626	3,588	SH		SOLE		0	0	3,588
iShares TR Russell 2000 Growth	com	464287648	308,970	1,225	SH		SOLE		0	0	1,225

Oberweis Asset Management 13F-HRQuarterly holdings report by institutional manager