Oberweis Asset Management 13FHR Quarterly holdings report by institutional manager | SEC 14 Aug 23

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
A10 Networks, Inc.	com	002121101	3,043,474	208,600	SH		SOLE		208,600	0	0
ABM Industries, Inc.	com	000957100	2,921,525	68,500	SH		SOLE		68,500	0	0
ACM Research, Inc. Class A	com	00108J109	3,735,648	285,600	SH		SOLE		285,600	0	0
ADMA Biologics, Inc.	com	000899104	6,157,503	1,668,700	SH		SOLE		1,668,700	0	0
AMR Corp Escrow	com	001ESC102	0	18,000	SH		SOLE		18,000	0	0
ATI, Inc.	com	01741R102	4,723,764	106,800	SH		SOLE		106,800	0	0
Acadia Healthcare Co., Inc.	com	00404A109	4,093,496	51,400	SH		SOLE		51,400	0	0
Aehr Test Systems	com	00760J108	36,015,705	873,108	SH		SOLE		872,808	0	300
Alight, Inc.	com	01626W101	3,338,412	361,300	SH		SOLE		361,300	0	0
Allegiant Travel Co.	com	01748X102	3,838,912	30,400	SH		SOLE		30,400	0	0
Allegro MicroSystems, Inc.	com	01749D105	8,849,246	196,040	SH		SOLE		177,520	0	18,520
Allied Motion Technologies	com	019330109	2,260,604	56,600	SH		SOLE		56,600	0	0
Allison Transmission Holdings,	com	01973R101	4,370,004	77,400	SH		SOLE		77,400	0	0
Alphatec Hldgs Inc.	com	02081G201	17,628,851	980,470	SH		SOLE		864,060	0	116,410
Alta Equipment Group, Inc.	com	02128L106	1,908,033	110,100	SH		SOLE		110,100	0	0
Alteryx, Inc. Com Cl A	com	02156B103	2,558,290	56,350	SH		SOLE		56,200	0	150
Amazon.com	com	023135106	260,720	2,000	SH		SOLE		0	0	2,000
American Power Corp	com	02906T107	0	10,000	SH		SOLE		0	0	10,000
Amgen, Inc.	com	031162100	306,992	1,383	SH		SOLE		0	0	1,383
Amphastar Pharmaceuticals, Inc	com	03209R103	8,494,066	147,800	SH		SOLE		147,800	0	0
Amtech Systems, Inc.	com	032332504	1,136,684	118,900	SH		SOLE		118,900	0	0
Amylyx Pharmaceuticals, Inc.	com	03237H101	1,833,450	85,000	SH		SOLE		85,000	0	0
Apple, Inc.	com	037833100	1,057,102	5,450	SH		SOLE		240	0	5,210
Applied Industrial	com	03820c105	3,533,852	24,400	SH		SOLE		24,400	0	0
Arcos Dorados Holdings, Inc.	com	G0457F107	237,800	23,200	SH		SOLE		23,200	0	0
Artivion, Inc	com	228903100	3,632,247	211,300	SH		SOLE		211,300	0	0
Avatar Ventures	com	05350B100	0	10,000	SH		SOLE		0	0	10,000
Aviat Networks, Inc.	com	05366Y201	3,654,249	109,507	SH		SOLE		109,507	0	0
Axcelis Technologies	com	054540208	44,072,349	240,399	SH		SOLE		208,639	0	31,760
Axonics, Inc.	com	05465P101	6,330,957	125,440	SH		SOLE		110,150	0	15,290
Bel Fuse, Inc.	com	077347300	6,975,315	121,500	SH		SOLE		121,500	0	0
Belden, Inc.	com	077454106	9,445,959	98,755	SH		SOLE		78,926	0	19,829
Blue Bird Corporation	com	095306106	6,773,224	301,300	SH		SOLE		301,300	0	0
Boot Barn Hldgs, Inc.	com	099406100	3,201,282	37,800	SH		SOLE		37,800	0	0
Brookline Bancorp, Inc.	com	11373M107	1,573,200	180,000	SH		SOLE		180,000	0	0
CECO Environmental Corp.	com	125141101	5,245,136	392,600	SH		SOLE		392,600	0	0
CIRCOR International, Inc.	com	17273K109	5,362,750	95,000	SH		SOLE		95,000	0	0
CVD Equipment Corp.	com	126601103	759,110	103,000	SH		SOLE		103,000	0	0
Cabot Corp.	com	127055101	4,174,286	62,405	SH		SOLE		51,639	0	10,766
Cadence Design System, Inc.	com	127387108	4,127,552	17,600	SH		SOLE		17,600	0	0
Caleres Inc.	com	129500104	1,600,917	66,900	SH		SOLE		66,900	0	0
Camtek, Ltd.	com	M20791105	5,280,437	148,202	SH		SOLE		148,202	0	0
Catalyst Pharmaceuticals, Inc.	com	14888U101	2,464,896	183,400	SH		SOLE		183,400	0	0
Ciena Corporation	com	171779309	5,026,779	118,305	SH		SOLE		99,390	0	18,915
Clean Harbors, Inc.	com	184496107	7,416,615	45,105	SH		SOLE		37,980	0	7,125
Comfort Systems USA Inc.	com	199908104	1,724,100	10,500	SH		SOLE		10,500	0	0
Comstock Res	com	205768302	2,394,966	206,463	SH		SOLE		206,463	0	0
Constellium NV Cl A	com	F21107101	48,147,461	2,799,271	SH		SOLE		1,869,439	0	929,832
Controladora Vuela Comp de Avi	com	21240E105	167,400	12,000	SH		SOLE		12,000	0	0
Crocs, Inc.	com	227046109	11,862,420	105,500	SH		SOLE		83,400	0	22,100
Dada Nexus Limited	com	23344D108	121,068	22,800	SH		SOLE		22,800	0	0
Deckers Outdoor Corp.	com	243537107	12,199,499	23,120	SH		SOLE		17,580	0	5,540
Destination XL Group, Inc.	com	25065K104	2,036,930	415,700	SH		SOLE		415,700	0	0
Digi International I	com	253798102	4,750,434	120,600	SH		SOLE		120,600	0	0
Dynavax Technologies Corp.	com	268158201	3,170,568	245,400	SH		SOLE		245,400	0	0
EZCorp, Inc.	com	302301106	4,241,956	506,200	SH		SOLE		506,200	0	0
Earthstone Energy Inc.	com	27032D304	3,186,670	223,000	SH		SOLE		223,000	0	0
Eli Lilly & Company	com	532457108	285,643	609	SH		SOLE		0	0	609
Employers Holdings, Inc.	com	292218104	3,557,691	95,100	SH		SOLE		95,100	0	0
Encompass Health Corporation	com	29261A100	5,288,151	78,100	SH		SOLE		78,100	0	0
Everi Hldgs, Inc.	com	30034T103	3,314,232	229,200	SH		SOLE		229,200	0	0
Evolent Health, Inc.	com	30050B101	6,905,673	227,910	SH		SOLE		206,360	0	21,550
Extreme Networks, Inc.	com	30226D106	8,802,295	337,900	SH		SOLE		297,600	0	40,300
Federal Signal Corp.	com	313855108	4,731,817	73,900	SH		SOLE		73,900	0	0
First Merchants Corporation	com	320817109	1,547,004	54,800	SH		SOLE		54,800	0	0
FirstCash Holdings, Inc	com	33768G107	3,742,533	40,100	SH		SOLE		40,100	0	0
Flowserve Corporation	com	34354P105	4,428,280	119,200	SH		SOLE		119,200	0	0
Formfactor Inc.	com	346375108	4,893,460	143,000	SH		SOLE		143,000	0	0
Franklin Electric	com	353514102	4,208,610	40,900	SH		SOLE		40,900	0	0
Frontdoor, Inc.	com	35905A109	3,754,630	117,700	SH		SOLE		117,700	0	0
Full House Resorts, Inc.	com	359678109	1,495,058	223,143	SH		SOLE		223,143	0	0
Granite Construction	com	387328107	4,379,778	110,100	SH		SOLE		110,100	0	0
Grupo Aeroportuario del Centro	com	400501102	229,068	2,700	SH		SOLE		2,700	0	0
H&E Equipment Services, Inc.	com	404030108	3,756,075	82,100	SH		SOLE		82,100	0	0
Haemonetics Corp.	com	405024100	4,044,150	47,500	SH		SOLE		47,500	0	0
Harmonic, Inc.	com	413160102	4,758,831	294,300	SH		SOLE		294,300	0	0
Haynes Intl, Inc.	com	420877201	3,689,532	72,600	SH		SOLE		72,600	0	0
Heritage Financial Corporation	com	42722X106	2,045,505	126,500	SH		SOLE		126,500	0	0
Hexcel Corporation	com	428291108	4,485,180	59,000	SH		SOLE		59,000	0	0
ICF International, Inc.	com	44925C103	9,976,078	80,200	SH		SOLE		80,200	0	0
Impinj, Inc.	com	453204109	16,060,349	179,145	SH		SOLE		159,120	0	20,025
Inmode Ltd.	com	M5425M103	5,120,685	137,100	SH		SOLE		126,760	0	10,340
Insperity, Inc.	com	45778Q107	2,141,280	18,000	SH		SOLE		18,000	0	0
Inspire Medical Systems, Inc.	com	457730109	2,483,496	7,650	SH		SOLE		7,650	0	0
Inter Parfums	com	458334109	4,110,992	30,400	SH		SOLE		30,400	0	0
International Money Express, I	com	46005L101	2,656,599	108,300	SH		SOLE		108,300	0	0
International Seaways, Inc.	com	Y41053102	2,860,352	74,800	SH		SOLE		74,800	0	0
JELD-WEN Holding, Inc.	com	47580P103	3,541,326	201,900	SH		SOLE		201,900	0	0
JP Morgan Chase & Company Inc.	com	46625H100	595,518	4,095	SH		SOLE		140	0	3,955
Janus International Group, Inc	com	47103N106	2,395,302	224,700	SH		SOLE		224,700	0	0
Johnson & Johnson	com	478160104	448,676	2,711	SH		SOLE		0	0	2,711
KVH Industries, Inc.	com	482738101	831,740	91,000	SH		SOLE		91,000	0	0
LSI Industries Inc.	com	50216C108	3,563,272	283,700	SH		SOLE		283,700	0	0
Lantheus Hldgs Inc.	com	516544103	13,945,826	166,180	SH		SOLE		151,820	0	14,360
LeMaitre Vascular, Inc.	com	525558201	2,126,048	31,600	SH		SOLE		31,600	0	0
Legend Biotech Corp.	com	52490G102	828,360	12,000	SH		SOLE		12,000	0	0
Li Auto, Inc. ADR	com	50202M102	1,158,300	33,000	SH		SOLE		33,000	0	0
Liberty Energy, Inc.	com	53115L104	1,469,363	109,900	SH		SOLE		109,900	0	0
Littelfuse, Inc.	com	537008104	4,427,912	15,200	SH		SOLE		15,200	0	0
M/I Homes, Inc.	com	55305B101	3,522,476	40,400	SH		SOLE		40,400	0	0
MGP Ingredients, Inc.	com	55303J106	4,766,658	44,850	SH		SOLE		44,700	0	150
MINISO Group Holding Limited	com	66981J102	1,644,632	96,800	SH		SOLE		96,800	0	0
MRC Global, Inc.	com	55345K103	2,249,638	223,400	SH		SOLE		223,400	0	0
Macom Technology Solutions	com	55405Y100	3,650,021	55,700	SH		SOLE		55,700	0	0
Magnite, Inc.	com	55955D100	4,650,555	340,700	SH		SOLE		340,700	0	0
Magnolia Oil & Gas Corp.	com	559663109	1,617,660	77,400	SH		SOLE		77,400	0	0
Mastercard, Inc.	com	57636Q104	371,727	945	SH		SOLE		0	0	945
Matador Resources Company	com	576485205	2,003,856	38,300	SH		SOLE		38,300	0	0
Maximus, Inc.	com	577933104	4,039,578	47,800	SH		SOLE		47,800	0	0
Maxlinear, Inc. Class A	com	57776J100	994,298	31,505	SH		SOLE		3,720	0	27,785
McDonald's Corporation	com	580135101	250,850	841	SH		SOLE		0	0	841
Mercantile Bank Corp.	com	587376104	1,734,219	62,789	SH		SOLE		42,400	0	20,389
Merit Medical System Inc	com	589889104	6,537,302	78,160	SH		SOLE		78,160	0	0
Microsoft Corp.	com	594918104	1,040,350	3,055	SH		SOLE		0	0	3,055
Model N, Inc.	com	607525102	6,888,764	194,818	SH		SOLE		169,928	0	24,890
Modine Mfg Co Com	com	607828100	3,797,300	115,000	SH		SOLE		115,000	0	0
Monarch Casino & Resort, Inc.	com	609027107	3,184,340	45,200	SH		SOLE		45,200	0	0
Murphy USA, Inc.	com	626755102	1,493,328	4,800	SH		SOLE		4,800	0	0
NOV, Inc.	com	62955J103	1,515,780	94,500	SH		SOLE		94,500	0	0
Napco Sec Technologies, Inc.	com	630402105	2,054,745	59,300	SH		SOLE		59,300	0	0
Navitas Semiconductor Corp.	com	63942X106	6,745,600	640,000	SH		SOLE		640,000	0	0
NeoGenomics, Inc.	com	64049M209	3,422,910	213,000	SH		SOLE		213,000	0	0
NerdWallet, Inc.	com	64082B102	1,766,257	187,700	SH		SOLE		187,700	0	0
New Relic, Inc.	com	64829B100	2,964,432	45,300	SH		SOLE		45,300	0	0
Newmont Mining	com	651639106	218,660	5,126	SH		SOLE		400	0	4,726
Nine Energy Service, Inc.	com	65441V101	903,114	235,800	SH		SOLE		235,800	0	0
Novanta, Inc.	com	67000B104	1,951,460	10,600	SH		SOLE		10,600	0	0
O-I Glass, Inc.	com	67098H104	3,585,573	168,100	SH		SOLE		168,100	0	0
OneSpan, Inc.	com	68287N100	6,185,980	416,845	SH		SOLE		416,845	0	0
Option Care Health Inc.	com	68404L201	3,606,390	111,000	SH		SOLE		111,000	0	0
Oxford Inds, Inc.	com	691497309	2,716,392	27,600	SH		SOLE		27,600	0	0
PDC Energy, Inc.	com	69327R101	2,817,454	39,604	SH		SOLE		26,460	0	13,144
PDD Holdings Inc.	com	722304102	1,106,240	16,000	SH		SOLE		16,000	0	0
Parsons Corp.	com	70202L102	4,351,856	90,400	SH		SOLE		90,400	0	0
Patterson-Uti Energy, Inc.	com	703481101	2,711,205	226,500	SH		SOLE		226,500	0	0
Pdf Solutions, Inc.	com	693282105	2,457,950	54,500	SH		SOLE		54,500	0	0
Pepsico, Inc.	com	713448108	202,816	1,095	SH		SOLE		0	0	1,095
Perion Network, Ltd.	com	M78673114	13,073,088	426,250	SH		SOLE		397,060	0	29,190
Photronics, Inc.	com	719405102	5,021,313	194,700	SH		SOLE		194,700	0	0
Playa Hotels & Resorts N.V.	com	N70544106	5,334,142	655,300	SH		SOLE		655,300	0	0
Power Integrations	com	739276103	6,557,791	69,270	SH		SOLE		67,270	0	2,000
Preferred Bank	com	740367404	3,134,430	57,000	SH		SOLE		57,000	0	0
Quaker Chemical Corporation	com	747316107	4,053,920	20,800	SH		SOLE		20,800	0	0
RF Industries Ltd.	com	749552105	261,865	63,100	SH		SOLE		63,100	0	0
RPC, Inc.	com	749660106	4,697,784	657,033	SH		SOLE		583,527	0	73,506
Resmed Inc.	com	761152107	316,825	1,450	SH		SOLE		0	0	1,450
SI-BONE, Inc.	com	825704109	5,940,996	220,200	SH		SOLE		220,200	0	0
SP Plus Corporation	com	78469C103	4,446,807	113,700	SH		SOLE		113,700	0	0
SPX Technologies, Inc.	com	78473E103	3,526,255	41,500	SH		SOLE		41,500	0	0
Scansource, Inc.	com	806037107	1,720,392	58,200	SH		SOLE		58,200	0	0
SeaWorld Entertainment Inc.	com	81282v100	5,578,596	99,600	SH		SOLE		82,220	0	17,380
Shoals Technology Group, Inc.	com	82489W107	3,568,176	139,600	SH		SOLE		139,600	0	0
ShockWave Medical, Inc.	com	82489T104	2,582,961	9,050	SH		SOLE		9,050	0	0
Silicon Laboratories, Inc.	com	826919102	4,023,947	25,510	SH		SOLE		25,510	0	0
Simpson Manufacturing	com	829073105	1,745,100	12,600	SH		SOLE		12,600	0	0
Sterling Construction Co., Inc	com	859241101	5,953,860	106,700	SH		SOLE		106,700	0	0
Sun Country Airlines Holdings,	com	866683105	4,792,736	213,200	SH		SOLE		213,200	0	0
SunOpta, Inc.	com	8676EP108	3,597,213	537,700	SH		SOLE		537,700	0	0
Super Micro Computer Inc.	com	86800U104	3,265,175	13,100	SH		SOLE		13,100	0	0
Tactile Sys Technology, Inc.	com	87357P100	7,353,104	294,950	SH		SOLE		294,950	0	0
Taiwan Semiconductor	com	874039100	1,059,660	10,500	SH		SOLE		10,500	0	0
Tencent Music Entertainment	com	88034P109	922,500	125,000	SH		SOLE		125,000	0	0
Texas Roadhouse	com	882681109	1,875,076	16,700	SH		SOLE		16,700	0	0
The Chefs Warehouse, Inc.	com	163086101	5,060,040	141,500	SH		SOLE		141,500	0	0
The Travelers Co., Inc.	com	89417E109	394,446	2,271	SH		SOLE		0	0	2,271
Titan Oil & Gas, Inc.	com	888309101	0	10,000	SH		SOLE		0	0	10,000
TransMedics Group, Inc.	com	89377M109	10,665,460	127,000	SH		SOLE		127,000	0	0
Treace Medical Concepts, Inc.	com	89455T109	6,433,370	251,500	SH		SOLE		251,500	0	0
UNUM Group	com	91529Y106	2,986,020	62,600	SH		SOLE		62,600	0	0
Ultra Clean Holdings	com	90385V107	6,572,814	170,900	SH		SOLE		170,900	0	0
V2X, Inc.	com	92242T101	4,846,968	97,800	SH		SOLE		97,800	0	0
VSE Corp.	com	918284100	2,608,713	47,700	SH		SOLE		47,700	0	0
Veeco Instruments, Inc.	com	922417100	5,200,200	202,500	SH		SOLE		202,500	0	0
Veracyte, Inc.	com	92337F107	12,284,436	482,310	SH		SOLE		454,270	0	28,040
Veritiv Corp.	com	923454102	9,143,152	72,790	SH		SOLE		72,790	0	0
Vertiv Holdings Co.	com	92537N108	6,151,382	248,340	SH		SOLE		247,790	0	550
Vishay Precision Group	com	92835K103	2,024,675	54,500	SH		SOLE		54,500	0	0
Visteon Corp.	com	92839U206	6,858,814	47,760	SH		SOLE		47,760	0	0
Wal Mart Stores Inc.	com	931142103	249,690	1,589	SH		SOLE		0	0	1,589
Washington Federal, Inc.	com	938824109	1,543,464	58,200	SH		SOLE		58,200	0	0
Weatherford International PLC	com	G48833118	5,219,284	78,580	SH		SOLE		78,580	0	0
Weave Communications, Inc.	com	94724R108	4,382,895	394,500	SH		SOLE		394,500	0	0
Wingstop, Inc.	com	974155103	1,521,216	7,600	SH		SOLE		7,600	0	0
Woodward, Inc.	com	980745103	4,411,561	37,100	SH		SOLE		37,100	0	0
Xenacare Hldgs, Inc.	com	98401A106	0	140,000	SH		SOLE		0	0	140,000
Zeta Global Holdings Corp.	com	98956A105	4,052,230	474,500	SH		SOLE		474,500	0	0
SPDR S&P 500 ETF Trust	com	78462F103	1,594,581	3,597	SH		SOLE		0	0	3,597

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