OBERWEIS ASSET MANAGEMENT INC/ Q3 2023 Filing

Filed November 14, 2023

Portfolio Value

$941.5M

Holdings

195

Report Date

Q3 2023

Filing Type

13F-HR

All Holdings (195 positions)

#	Stock	Shares	Value	% Portfolio
1	CSTMConstellium NV Cl A	2,933,071	$53.0M	5.63%
2	AEHRAehr Test Systems	910,108	$41.0M	4.35%
3	ACLSAxcelis Technologies	193,559	$31.0M	3.29%
4	WFRDWeatherford International PLC	196,920	$17.0M	1.81%
5	ATECAlphatec Hldgs Inc.	1,236,040	$16.0M	1.70%
6	VRTVertiv Holdings Co.	380,990	$14.0M	1.49%
7	PERIPerion Network, Ltd.	470,290	$14.0M	1.49%
8	VCYTVeracyte, Inc.	597,540	$13.0M	1.38%
9	ICFIICF International, Inc.	95,700	$11.0M	1.17%
10	LNTHLantheus Hldgs Inc.	169,340	$11.0M	1.17%
11	CAMTCamtek, Ltd.	166,380	$10.0M	1.06%
12	OLEDUniversal Display Corp.	62,015	$9.0M	0.96%
13	AXNX*Axonics, Inc.	161,620	$9.0M	0.96%
14	EXTRExtreme Networks, Inc.	381,470	$9.0M	0.96%
15	BDCBelden, Inc.	91,480	$8.0M	0.85%
16	FLSFlowserve Corporation	210,840	$8.0M	0.85%
17	VCVisteon Corp.	57,970	$8.0M	0.85%
18	STRLSterling Construction Co., Inc	110,000	$8.0M	0.85%
19	TMDXTransMedics Group, Inc.	151,100	$8.0M	0.85%
20	PSNParsons Corp.	131,300	$7.0M	0.74%
21	ALGMAllegro MicroSystems, Inc.	225,930	$7.0M	0.74%
22	EHCEncompass Health Corporation	111,600	$7.0M	0.74%
23	PWIPower Integrations	94,573	$7.0M	0.74%
24	ADMAADMA Biologics, Inc.	2,078,400	$7.0M	0.74%
25	AMPHAmphastar Pharmaceuticals, Inc	152,500	$7.0M	0.74%
26	CLHClean Harbors, Inc.	45,415	$7.0M	0.74%
27	JPXAerovironment, Inc.	69,100	$7.0M	0.74%
28	HAEHaemonetics Corp.	77,400	$6.0M	0.64%
29	FMFFormfactor Inc.	188,100	$6.0M	0.64%
30	SIBNSI-BONE, Inc.	315,100	$6.0M	0.64%
31	RESRPC, Inc.	708,576	$6.0M	0.64%
32	VECOVeeco Instruments, Inc.	226,800	$6.0M	0.64%
33	FCFSFirstCash Holdings, Inc	61,700	$6.0M	0.64%
34	MMSIMerit Medical System Inc	95,660	$6.0M	0.64%
35	WWDWoodward, Inc.	48,800	$6.0M	0.64%
36	CROXCrocs, Inc.	78,730	$6.0M	0.64%
37	UCTTUltra Clean Holdings	218,100	$6.0M	0.64%
38	BLBDBlue Bird Corporation	306,500	$6.0M	0.64%
39	EVHEvolent Health, Inc.	255,460	$6.0M	0.64%
40	CECOCECO Environmental Corp.	416,700	$6.0M	0.64%
41	ACMRACM Research, Inc. Class A	341,800	$6.0M	0.64%
42	NVTSNavitas Semiconductor Corp.	912,500	$6.0M	0.64%
43	ALSNAllison Transmission Holdings,	94,100	$5.0M	0.53%
44	INMDInmode Ltd.	180,260	$5.0M	0.53%
45	ZETAZeta Global Holdings Corp.	674,700	$5.0M	0.53%
46	CIR2USDCIRCOR International, Inc.	97,900	$5.0M	0.53%
47	VVXV2X, Inc.	112,500	$5.0M	0.53%
48	ACHCAcadia Healthcare Co., Inc.	77,800	$5.0M	0.53%
49	FTDRFrontdoor, Inc.	164,700	$5.0M	0.53%
50	PLYAPlaya Hotels & Resorts N.V.	701,500	$5.0M	0.53%
51	OSKOshkosh Corp.	54,136	$5.0M	0.53%
52	PRKSSeaWorld Entertainment Inc.	119,280	$5.0M	0.53%
53	DVAXDynavax Technologies Corp.	385,200	$5.0M	0.53%
54	MGPIMGP Ingredients, Inc.	53,650	$5.0M	0.53%
55	SPXCSPX Technologies, Inc.	68,000	$5.0M	0.53%
56	MODNEURModel N, Inc.	241,430	$5.0M	0.53%
57	PFBCPreferred Bank	82,600	$5.0M	0.53%
58	FSSFederal Signal Corp.	91,400	$5.0M	0.53%
59	OPCHOption Care Health Inc.	167,800	$5.0M	0.53%
60	IPARInter Parfums	41,600	$5.0M	0.53%
61	PRIMPrimoris Services Corp.	178,600	$5.0M	0.53%
62	HNIHNI Corp.	169,700	$5.0M	0.53%
63	BELFBBel Fuse, Inc.	121,500	$5.0M	0.53%
64	HURNHuron Consulting Group, Inc.	55,900	$5.0M	0.53%
65	AAOIApplied Optoelectronics Inc.	468,415	$5.0M	0.53%
66	ONTOOnto Innovation, Inc.	41,100	$5.0M	0.53%
67	JBIJanus International Group, Inc	378,600	$4.0M	0.42%
68	PLABPhotronics, Inc.	230,100	$4.0M	0.42%
69	GVAGranite Construction	114,600	$4.0M	0.42%
70	SPUSDSP Plus Corporation	122,500	$4.0M	0.42%
71	TCMDTactile Sys Technology, Inc.	330,350	$4.0M	0.42%
72	CDNSCadence Design System, Inc.	17,200	$4.0M	0.42%
73	SNCYSun Country Airlines Holdings,	283,000	$4.0M	0.42%
74	ALGTAllegiant Travel Co.	56,762	$4.0M	0.42%
75	—Applied Industrial	30,500	$4.0M	0.42%
76	KWRQuaker Chemical Corporation	25,500	$4.0M	0.42%
77	TMCITreace Medical Concepts, Inc.	355,600	$4.0M	0.42%
78	PETQEURPetlQ Inc	219,600	$4.0M	0.42%
79	ESTEEUREarthstone Energy Inc.	240,600	$4.0M	0.42%
80	BOOTBoot Barn Hldgs, Inc.	60,800	$4.0M	0.42%
81	WEAVWeave Communications, Inc.	523,600	$4.0M	0.42%
82	EZPWEZCorp, Inc.	595,300	$4.0M	0.42%
83	SMCIUSDSuper Micro Computer Inc.	15,700	$4.0M	0.42%
84	HXLHexcel Corporation	73,300	$4.0M	0.42%
85	DGIIDigi International I	161,100	$4.0M	0.42%
86	ANFAbercrombie & Fitch Co.	73,500	$4.0M	0.42%
87	BOOMDMC Global, Inc.	174,100	$4.0M	0.42%
88	EIGEmployers Holdings, Inc.	112,200	$4.0M	0.42%
89	LYTSLSI Industries Inc.	298,700	$4.0M	0.42%
90	MMSMaximus, Inc.	55,200	$4.0M	0.42%
91	MHOM/I Homes, Inc.	44,300	$3.0M	0.32%
92	AMLXAmylyx Pharmaceuticals, Inc.	170,000	$3.0M	0.32%
93	SHLSShoals Technology Group, Inc.	174,300	$3.0M	0.32%
94	FSLYFastly, Inc.	170,300	$3.0M	0.32%
95	FNFabrinet	22,200	$3.0M	0.32%
96	CHEFThe Chefs Warehouse, Inc.	146,400	$3.0M	0.32%
97	CLWClearwater Paper Corp	101,000	$3.0M	0.32%
98	NEONeoGenomics, Inc.	293,400	$3.0M	0.32%
99	JELDJELD-WEN Holding, Inc.	247,400	$3.0M	0.32%
100	UNMUNUM Group	76,700	$3.0M	0.32%

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