Oberweis Asset Management 13FHR Quarterly holdings report by institutional manager | SEC 15 May 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	3,349,638	63,900	SH		SOLE		63,900	0	0
AAON, Inc.	com	000360206	4,264,040	48,400	SH		SOLE		48,400	0	0
ACI Worldwide Inc.	com	004498101	11,442,904	344,562	SH		SOLE		344,562	0	0
ACM Research, Inc. Class A	com	00108J109	12,854,528	441,130	SH		SOLE		441,130	0	0
ADMA Biologics, Inc.	com	000899104	18,418,620	2,790,700	SH		SOLE		2,790,700	0	0
AMR Corp Escrow	com	001ESC102	0	18,000	SH		SOLE		18,000	0	0
ANI Pharmaceuticals, Inc.	com	00182C103	3,007,155	43,500	SH		SOLE		43,500	0	0
ATI, Inc.	com	01741R102	7,261,023	141,900	SH		SOLE		141,900	0	0
Abercrombie & Fitch Co.	com	002896207	6,028,373	48,100	SH		SOLE		48,100	0	0
Acadia Healthcare Co., Inc.	com	00404A109	12,013,713	151,650	SH		SOLE		151,650	0	0
Aehr Test Systems	com	00760J108	12,001,365	967,852	SH		SOLE		950,112	0	17,740
Aerovironment, Inc.	com	008073108	15,568,650	101,570	SH		SOLE		101,500	0	70
Allegro MicroSystems, Inc.	com	01749D105	5,965,709	221,280	SH		SOLE		203,120	0	18,160
Alphatec Hldgs Inc.	com	02081G201	19,111,285	1,385,880	SH		SOLE		1,300,720	0	85,160
Amer Sports, Inc.	com	G0260P102	244,500	15,000	SH		SOLE		15,000	0	0
American Superconductor	com	030111207	8,570,744	634,400	SH		SOLE		634,400	0	0
Amgen, Inc.	com	031162100	304,262	1,070	SH		SOLE		0	0	1,070
Amphastar Pharmaceuticals, Inc	com	03209R103	18,348,452	417,865	SH		SOLE		399,320	0	18,545
Apple, Inc.	com	037833100	579,826	3,381	SH		SOLE		120	0	3,261
Applied Optoelectronics Inc.	com	03823U102	11,775,664	849,615	SH		SOLE		849,615	0	0
Arcos Dorados Holdings, Inc.	com	G0457F107	874,032	78,600	SH		SOLE		78,600	0	0
Aris Water Solutions, Inc.	com	04041L106	2,762,080	195,200	SH		SOLE		195,200	0	0
Arlo Technologies, Inc.	com	04206A101	3,458,510	273,400	SH		SOLE		273,400	0	0
Artivion, Inc	com	228903100	5,975,584	282,400	SH		SOLE		282,400	0	0
Assurant, Inc.	com	04621X108	8,470,800	45,000	SH		SOLE		45,000	0	0
AvePoint, Inc.	com	053604104	2,113,056	266,800	SH		SOLE		266,800	0	0
Aviat Networks, Inc.	com	05366Y201	7,641,430	199,307	SH		SOLE		199,307	0	0
Axcelis Technologies	com	054540208	23,345,485	209,339	SH		SOLE		195,919	0	13,420
AxoGen Inc.	com	05463X106	2,311,248	286,400	SH		SOLE		286,400	0	0
Axonics, Inc.	com	05465P101	11,281,423	163,570	SH		SOLE		147,750	0	15,820
Azek Co., Inc.	com	05478C105	11,093,598	220,900	SH		SOLE		220,900	0	0
BBB Foods, Inc.	com	G0896C103	261,580	11,000	SH		SOLE		11,000	0	0
BJ's Restaurants, Inc.	com	09180C106	2,301,048	63,600	SH		SOLE		63,600	0	0
Backblaze, Inc.	com	05637B105	3,660,294	357,800	SH		SOLE		357,800	0	0
Blackbaud	com	09227Q100	4,248,222	57,300	SH		SOLE		57,300	0	0
Blue Bird Corporation	com	095306106	11,467,494	299,100	SH		SOLE		299,100	0	0
Boot Barn Hldgs, Inc.	com	099406100	5,176,160	54,400	SH		SOLE		54,400	0	0
CECO Environmental Corp.	com	125141101	10,667,468	463,400	SH		SOLE		463,400	0	0
Cabot Corp.	com	127055101	8,491,620	92,100	SH		SOLE		92,100	0	0
Cadence Design System, Inc.	com	127387108	4,077,768	13,100	SH		SOLE		13,100	0	0
Camtek, Ltd.	com	M20791105	14,926,139	178,180	SH		SOLE		178,180	0	0
Carpenter Technology Corp.	com	144285103	4,413,756	61,800	SH		SOLE		61,800	0	0
Catalyst Pharmaceuticals, Inc.	com	14888U101	7,306,896	458,400	SH		SOLE		458,400	0	0
Cellebrite DI Ltd.	com	M2197Q107	4,408,732	397,900	SH		SOLE		397,900	0	0
Celsius Hldgs Inc.	com	15118V207	248,760	3,000	SH		SOLE		0	0	3,000
Century Communities, Inc.	com	156504300	11,695,800	121,200	SH		SOLE		121,200	0	0
Clean Harbors, Inc.	com	184496107	16,365,496	81,295	SH		SOLE		73,020	0	8,275
Clear Secure, Inc.	com	18467V109	10,645,635	500,500	SH		SOLE		500,500	0	0
Clearwater Paper Corp	com	18538R103	4,906,506	112,200	SH		SOLE		112,200	0	0
Comfort Systems USA Inc.	com	199908104	6,290,658	19,800	SH		SOLE		19,800	0	0
Constellium NV Cl A	com	F21107101	39,870,322	1,803,271	SH		SOLE		1,135,639	0	667,632
Couchbase, Inc.	com	22207T101	2,310,018	87,800	SH		SOLE		87,800	0	0
Credo Technology Group	com	G25457105	6,821,061	321,900	SH		SOLE		321,900	0	0
Crocs, Inc.	com	227046109	13,718,520	95,400	SH		SOLE		85,610	0	9,790
Deckers Outdoor Corp.	com	243537107	8,866,669	9,420	SH		SOLE		8,155	0	1,265
Despegar Com Corp.	com	G27358103	269,100	22,500	SH		SOLE		22,500	0	0
Dorian LPG Ltd.	com	Y2106R110	2,903,730	75,500	SH		SOLE		75,500	0	0
Duolingo, Inc.	com	26603R106	4,168,962	18,900	SH		SOLE		18,900	0	0
Dycom Industries, Inc.	com	267475101	4,162,370	29,000	SH		SOLE		29,000	0	0
Dynavax Technologies Corp.	com	268158201	5,742,107	462,700	SH		SOLE		462,700	0	0
ESAB Corporation	com	29605J106	14,285,644	129,200	SH		SOLE		129,200	0	0
EZCorp, Inc.	com	302301106	7,766,715	685,500	SH		SOLE		685,500	0	0
Employers Holdings, Inc.	com	292218104	3,908,079	86,100	SH		SOLE		86,100	0	0
Encompass Health Corporation	com	29261A100	16,857,558	204,136	SH		SOLE		193,800	0	10,336
Enerpac Tool Group Corp.	com	292765104	2,756,518	77,300	SH		SOLE		77,300	0	0
Evolent Health, Inc.	com	30050B101	11,113,843	338,940	SH		SOLE		319,460	0	19,480
Evolus, Inc.	com	30052C107	5,562,200	397,300	SH		SOLE		397,300	0	0
Exlservice Holdings	com	302081104	4,235,760	133,200	SH		SOLE		133,200	0	0
Fabrinet	com	G3323L100	4,139,538	21,900	SH		SOLE		21,900	0	0
Federal Signal Corp.	com	313855108	10,848,932	127,830	SH		SOLE		127,700	0	130
First Merchants Corporation	com	320817109	4,306,660	123,400	SH		SOLE		123,400	0	0
FirstCash Holdings, Inc	com	33768G107	11,695,418	91,700	SH		SOLE		91,700	0	0
Flowserve Corporation	com	34354P105	12,533,571	274,378	SH		SOLE		256,684	0	17,693
Formfactor Inc.	com	346375108	10,800,621	236,700	SH		SOLE		236,700	0	0
Frontdoor, Inc.	com	35905A109	8,578,314	263,300	SH		SOLE		260,200	0	3,100
G-III Apparel Group Ltd.	com	36237H101	6,408,309	220,900	SH		SOLE		220,900	0	0
Gentherm, Inc.	com	37253A103	4,232,130	73,500	SH		SOLE		73,500	0	0
Gibraltar Inds	com	374689107	4,251,984	52,800	SH		SOLE		52,800	0	0
Grand Canyon Education, Inc.	com	38526M106	5,884,272	43,200	SH		SOLE		43,200	0	0
Grocery Outlet Hldg Corp.	com	39874R101	8,518,880	296,000	SH		SOLE		296,000	0	0
H&E Equipment Services, Inc.	com	404030108	4,460,510	69,500	SH		SOLE		69,500	0	0
HNI Corp.	com	404251100	3,763,842	83,400	SH		SOLE		83,400	0	0
Haemonetics Corp.	com	405024100	12,264,368	143,695	SH		SOLE		135,010	0	8,685
Hawkins, Inc.	com	420261109	2,856,960	37,200	SH		SOLE		37,200	0	0
HealthEquity Inc.	com	42226A107	4,187,619	51,300	SH		SOLE		51,300	0	0
Helix Energy Solutions Group,	com	42330P107	4,417,300	407,500	SH		SOLE		407,500	0	0
Huron Consulting Group, Inc.	com	447462102	4,753,704	49,200	SH		SOLE		49,200	0	0
ICF International, Inc.	com	44925C103	14,596,047	96,900	SH		SOLE		96,900	0	0
Imax Corp.	com	45245E109	3,819,354	236,200	SH		SOLE		236,200	0	0
Informatica Corp.	com	45674M101	10,815,000	309,000	SH		SOLE		309,000	0	0
Installed Building Products, I	com	45780R101	7,865,392	30,400	SH		SOLE		30,400	0	0
Integer Holdings Corporation	com	45826H109	11,282,956	96,700	SH		SOLE		96,700	0	0
Inter Parfums	com	458334109	6,786,633	48,300	SH		SOLE		48,300	0	0
International Seaways, Inc.	com	Y41053102	10,570,840	198,700	SH		SOLE		198,700	0	0
Itron Inc	com	465741106	11,620,512	125,600	SH		SOLE		125,600	0	0
JELD-WEN Holding, Inc.	com	47580P103	4,088,898	192,600	SH		SOLE		192,600	0	0
JP Morgan Chase & Company Inc.	com	46625H100	762,021	3,804	SH		SOLE		140	0	3,664
Janus International Group, Inc	com	47103N106	10,521,402	695,400	SH		SOLE		695,400	0	0
Johnson & Johnson	com	478160104	342,865	2,167	SH		SOLE		0	0	2,167
Kanzhun Limited ADR	com	48553T106	438,250	25,000	SH		SOLE		25,000	0	0
Krystal Biotech, Inc.	com	501147102	6,352,101	35,700	SH		SOLE		35,700	0	0
LeMaitre Vascular, Inc.	com	525558201	5,308,895	80,001	SH		SOLE		80,001	0	0
Legend Biotech Corp. ADR	com	52490G102	336,540	6,000	SH		SOLE		6,000	0	0
Li Auto, Inc. ADR	com	50202M102	696,440	23,000	SH		SOLE		23,000	0	0
Liberty Energy, Inc.	com	53115L104	4,896,136	236,300	SH		SOLE		236,300	0	0
Light & Wonder Inc.	com	80874P109	4,349,034	42,600	SH		SOLE		42,600	0	0
Limbach Hldgs, Inc.	com	53263P105	6,826,016	164,800	SH		SOLE		164,800	0	0
Liquidia Corp.	com	53635D202	2,212,500	150,000	SH		SOLE		150,000	0	0
LivaNova Plc	com	G5509L101	11,327,850	202,500	SH		SOLE		202,500	0	0
Liveramp Hldgs, Inc.	com	53815P108	10,204,410	295,780	SH		SOLE		280,990	0	14,790
M/I Homes, Inc.	com	55305B101	4,933,698	36,200	SH		SOLE		36,200	0	0
MINISO Group Holding Limited A	com	66981J102	615,000	30,000	SH		SOLE		30,000	0	0
MSA Safety Inc	com	553498106	8,556,678	44,200	SH		SOLE		44,200	0	0
Magnolia Oil & Gas Corp.	com	559663109	4,790,370	184,600	SH		SOLE		184,600	0	0
MakeMyTrip Ltd.	com	V5633W109	611,030	8,600	SH		SOLE		8,600	0	0
Mannkind Corp.	com	56400P706	3,618,564	798,800	SH		SOLE		798,800	0	0
Mastercard, Inc.	com	57636Q104	373,505	776	SH		SOLE		0	0	776
Matador Resources Company	com	576485205	5,501,848	82,400	SH		SOLE		82,400	0	0
Matrix Service Co.	com	576853105	2,586,455	198,500	SH		SOLE		198,500	0	0
Maximus, Inc.	com	577933104	7,525,830	89,700	SH		SOLE		89,700	0	0
McDonald's Corporation	com	580135101	238,009	844	SH		SOLE		0	0	844
Mercantile Bank Corp.	com	587376104	3,438,231	89,328	SH		SOLE		68,700	0	20,628
Merck & Co.	com	58933Y105	228,274	1,730	SH		SOLE		0	0	1,730
Merit Medical System Inc	com	589889104	11,854,118	156,490	SH		SOLE		149,220	0	7,270
Microsoft Corp.	com	594918104	1,146,462	2,725	SH		SOLE		0	0	2,725
Modine Mfg Co Com	com	607828100	6,139,755	64,500	SH		SOLE		64,500	0	0
Monarch Casino & Resort, Inc.	com	609027107	6,464,138	86,200	SH		SOLE		86,200	0	0
NOV, Inc.	com	62955J103	4,233,888	216,900	SH		SOLE		216,900	0	0
Navitas Semiconductor Corp.	com	63942X106	3,851,298	807,400	SH		SOLE		806,600	0	800
NeoGenomics, Inc.	com	64049M209	11,588,784	737,200	SH		SOLE		737,200	0	0
Nextracker, Inc.	com	65290E101	13,262,839	235,700	SH		SOLE		235,700	0	0
OneSpaWorld Holdings Limited	com	P73684113	5,561,892	420,400	SH		SOLE		420,400	0	0
Onto Innovation, Inc.	com	683344105	19,362,884	106,930	SH		SOLE		102,395	0	4,535
Oscar Health, Inc.	com	687793109	4,386,650	295,000	SH		SOLE		295,000	0	0
Oshkosh Corp.	com	688239201	16,689,608	133,827	SH		SOLE		123,973	0	9,854
Osi Systems, Inc.	com	671044105	7,897,946	55,300	SH		SOLE		55,300	0	0
Oxford Inds, Inc.	com	691497309	2,630,160	23,400	SH		SOLE		23,400	0	0
PDD Holdings Inc. ADR	com	722304102	1,685,625	14,500	SH		SOLE		14,500	0	0
Parsons Corp.	com	70202L102	14,279,013	172,140	SH		SOLE		172,140	0	0
PetlQ Inc	com	71639T106	6,227,996	340,700	SH		SOLE		340,700	0	0
Photronics, Inc.	com	719405102	7,252,752	256,100	SH		SOLE		256,100	0	0
Playa Hotels & Resorts N.V.	com	N70544106	7,289,550	751,500	SH		SOLE		751,500	0	0
Powell Industries Inc.	com	739128106	2,390,640	16,800	SH		SOLE		16,800	0	0
Precision Drilling Corp.	com	74022D407	4,017,213	59,700	SH		SOLE		59,700	0	0
Preferred Bank	com	740367404	7,293,150	95,000	SH		SOLE		95,000	0	0
Primo Water Corp.	com	74167P108	5,890,935	323,500	SH		SOLE		323,500	0	0
Primoris Services Corp.	com	74164F103	8,935,443	209,900	SH		SOLE		209,900	0	0
Proto Labs Inc.	com	743713109	3,485,625	97,500	SH		SOLE		97,500	0	0
Quaker Chemical Corporation	com	747316107	8,312,625	40,500	SH		SOLE		40,500	0	0
Quanterix Corp.	com	74766Q101	2,348,932	99,700	SH		SOLE		99,700	0	0
RPC, Inc.	com	749660106	6,489,803	838,476	SH		SOLE		781,006	0	57,470
Rapid7, Inc.	com	753422104	4,634,280	94,500	SH		SOLE		94,500	0	0
Resmed Inc.	com	761152107	287,144	1,450	SH		SOLE		0	0	1,450
Rev Group, Inc.	com	749527107	2,789,967	126,300	SH		SOLE		126,300	0	0
Rush Street Interactive, Inc.	com	782011100	5,056,317	776,700	SH		SOLE		776,700	0	0
RxSight, Inc.	com	78349D107	6,532,091	126,640	SH		SOLE		126,640	0	0
SI-BONE, Inc.	com	825704109	5,081,248	310,400	SH		SOLE		310,400	0	0
SPX Technologies, Inc.	com	78473E103	8,495,970	69,000	SH		SOLE		69,000	0	0
SharkNinja, Inc.	com	G8068L108	14,650,608	235,200	SH		SOLE		235,200	0	0
Silicon Laboratories, Inc.	com	826919102	11,210,160	78,000	SH		SOLE		78,000	0	0
Silicon Motion Techn ADR	com	82706C108	16,726,756	217,400	SH		SOLE		217,400	0	0
Simpson Manufacturing	com	829073105	5,088,464	24,800	SH		SOLE		24,800	0	0
Skyward Specialty Ins Group	com	830940102	4,328,337	115,700	SH		SOLE		115,700	0	0
Skywest Inc	com	830879102	18,123,829	262,360	SH		SOLE		262,200	0	160
Sprouts Farmers Markets LLC	com	85208M102	4,171,856	64,700	SH		SOLE		64,700	0	0
Sterling Construction Co., Inc	com	859241101	10,655,946	96,600	SH		SOLE		96,600	0	0
Stride, Inc.	com	86333M108	4,161,300	66,000	SH		SOLE		66,000	0	0
Sun Country Airlines Holdings,	com	866683105	4,913,304	325,600	SH		SOLE		325,600	0	0
Sweetgreen, Inc.	com	87043Q108	2,471,716	97,851	SH		SOLE		97,851	0	0
Taiwan Semiconductor ADR	com	874039100	2,516,925	18,500	SH		SOLE		18,500	0	0
Tal Education Group ADR	com	874080104	283,750	25,000	SH		SOLE		25,000	0	0
Tencent Music Entertainment AD	com	88034P109	895,200	80,000	SH		SOLE		80,000	0	0
The Gorman-Rupp Co.	com	383082104	2,724,995	68,900	SH		SOLE		68,900	0	0
The Travelers Co., Inc.	com	89417E109	468,600	2,036	SH		SOLE		0	0	2,036
The Vita Coco Co., Inc.	com	92846Q107	4,040,722	165,400	SH		SOLE		165,400	0	0
Toyota Motor Corp. ADR	com	892331307	202,654	805	SH		SOLE		0	0	805
TransMedics Group, Inc.	com	89377M109	14,654,908	198,200	SH		SOLE		198,200	0	0
Transcat, Inc.	com	893529107	3,242,613	29,100	SH		SOLE		29,100	0	0
Trex Company, Inc.	com	89531P105	5,994,975	60,100	SH		SOLE		60,100	0	0
Ultra Clean Holdings	com	90385V107	14,682,424	319,600	SH		SOLE		319,600	0	0
Universal Display Corp.	com	91347P105	13,045,142	77,442	SH		SOLE		71,420	0	6,022
Upwork, Inc.	com	91688F104	5,752,392	469,200	SH		SOLE		469,200	0	0
VSE Corp.	com	918284100	5,304,000	66,300	SH		SOLE		66,300	0	0
VTEX	com	G9470A102	543,305	66,500	SH		SOLE		66,500	0	0
Veeco Instruments, Inc.	com	922417100	9,464,247	269,100	SH		SOLE		269,100	0	0
Veracyte, Inc.	com	92337F107	14,884,872	671,700	SH		SOLE		638,160	0	33,540
Vertiv Holdings Co.	com	92537N108	18,755,543	229,650	SH		SOLE		213,980	0	15,670
Vital Energy, Inc.	com	516806205	5,747,876	109,400	SH		SOLE		109,400	0	0
Weatherford International PLC	com	G48833118	25,634,782	222,100	SH		SOLE		210,960	0	11,140
Weave Communications, Inc.	com	94724R108	6,995,912	609,400	SH		SOLE		609,400	0	0
Wingstop, Inc.	com	974155103	7,328,000	20,000	SH		SOLE		20,000	0	0
Woodward, Inc.	com	980745103	10,541,808	68,400	SH		SOLE		68,400	0	0
Xenacare Hldgs, Inc.	com	98401A106	0	140,000	SH		SOLE		0	0	140,000
Zeta Global Holdings Corp.	com	98956A105	12,919,041	1,181,980	SH		SOLE		1,103,180	0	78,800
e.l.f. Beauty, Inc.	com	26856L103	8,570,432	43,720	SH		SOLE		43,720	0	0
SPDR S&P 500 ETF Trust	com	78462F103	1,870,317	3,576	SH		SOLE		0	0	3,576

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