OBERWEIS ASSET MANAGEMENT INC/ Q1 2024 Filing

Filed May 15, 2024

Portfolio Value

$1.4B

Holdings

196

Report Date

Q1 2024

Filing Type

13F-HR

All Holdings (196 positions)

#	Stock	Shares	Value	% Portfolio
1	CSTMConstellium NV Cl A	1,803,271	$39.9M	2.88%
2	WFRDWeatherford International PLC	222,100	$25.6M	1.85%
3	ACLSAxcelis Technologies	209,339	$23.3M	1.69%
4	ONTOOnto Innovation, Inc.	106,930	$19.4M	1.40%
5	ATECAlphatec Hldgs Inc.	1,385,880	$19.1M	1.38%
6	VRTVertiv Holdings Co.	229,650	$18.8M	1.36%
7	ADMAADMA Biologics, Inc.	2,790,700	$18.4M	1.33%
8	AMPHAmphastar Pharmaceuticals, Inc	417,865	$18.3M	1.33%
9	SKYWSkywest Inc	262,360	$18.1M	1.31%
10	EHCEncompass Health Corporation	204,136	$16.9M	1.22%
11	SIMOSilicon Motion Techn ADR	217,400	$16.7M	1.21%
12	OSKOshkosh Corp.	133,827	$16.7M	1.21%
13	CLHClean Harbors, Inc.	81,295	$16.4M	1.18%
14	JPXAerovironment, Inc.	101,570	$15.6M	1.13%
15	CAMTCamtek, Ltd.	178,180	$14.9M	1.08%
16	VCYTVeracyte, Inc.	671,700	$14.9M	1.08%
17	UCTTUltra Clean Holdings	319,600	$14.7M	1.06%
18	TMDXTransMedics Group, Inc.	198,200	$14.7M	1.06%
19	SNSharkNinja, Inc.	235,200	$14.7M	1.06%
20	ICFIICF International, Inc.	96,900	$14.6M	1.06%
21	ESABESAB Corporation	129,200	$14.3M	1.03%
22	PSNParsons Corp.	172,140	$14.3M	1.03%
23	CROXCrocs, Inc.	95,400	$13.7M	0.99%
24	NXTNextracker, Inc.	235,700	$13.3M	0.96%
25	OLEDUniversal Display Corp.	77,442	$13.0M	0.94%
26	ZETAZeta Global Holdings Corp.	1,181,980	$12.9M	0.93%
27	ACMRACM Research, Inc. Class A	441,130	$12.9M	0.93%
28	FLSFlowserve Corporation	274,378	$12.5M	0.91%
29	HAEHaemonetics Corp.	143,695	$12.3M	0.89%
30	ACHCAcadia Healthcare Co., Inc.	151,650	$12.0M	0.87%
31	AEHRAehr Test Systems	967,852	$12.0M	0.87%
32	MMSIMerit Medical System Inc	156,490	$11.9M	0.86%
33	AAOIApplied Optoelectronics Inc.	849,615	$11.8M	0.85%
34	CCSCentury Communities, Inc.	121,200	$11.7M	0.85%
35	FCFSFirstCash Holdings, Inc	91,700	$11.7M	0.85%
36	ITRIItron Inc	125,600	$11.6M	0.84%
37	NEONeoGenomics, Inc.	737,200	$11.6M	0.84%
38	BLBDBlue Bird Corporation	299,100	$11.5M	0.83%
39	TSAACI Worldwide Inc.	344,562	$11.4M	0.83%
40	LIVNLivaNova Plc	202,500	$11.3M	0.82%
41	ITGRInteger Holdings Corporation	96,700	$11.3M	0.82%
42	AXNX*Axonics, Inc.	163,570	$11.3M	0.82%
43	SLABSilicon Laboratories, Inc.	78,000	$11.2M	0.81%
44	EVHEvolent Health, Inc.	338,940	$11.1M	0.80%
45	AZEKAzek Co., Inc.	220,900	$11.1M	0.80%
46	FSSFederal Signal Corp.	127,830	$10.8M	0.78%
47	INFA1EURInformatica Corp.	309,000	$10.8M	0.78%
48	FMFFormfactor Inc.	236,700	$10.8M	0.78%
49	CECOCECO Environmental Corp.	463,400	$10.7M	0.77%
50	STRLSterling Construction Co., Inc	96,600	$10.7M	0.77%
51	YOUClear Secure, Inc.	500,500	$10.6M	0.77%
52	INSWInternational Seaways, Inc.	198,700	$10.6M	0.76%
53	WWDWoodward, Inc.	68,400	$10.5M	0.76%
54	JBIJanus International Group, Inc	695,400	$10.5M	0.76%
55	RAMPLiveramp Hldgs, Inc.	295,780	$10.2M	0.74%
56	VECOVeeco Instruments, Inc.	269,100	$9.5M	0.68%
57	PRIMPrimoris Services Corp.	209,900	$8.9M	0.65%
58	DECKDeckers Outdoor Corp.	9,420	$8.9M	0.64%
59	FTDRFrontdoor, Inc.	263,300	$8.6M	0.62%
60	AMSCAmerican Superconductor	634,400	$8.6M	0.62%
61	ELFe.l.f. Beauty, Inc.	43,720	$8.6M	0.62%
62	MSAMSA Safety Inc	44,200	$8.6M	0.62%
63	GOGrocery Outlet Hldg Corp.	296,000	$8.5M	0.62%
64	SPXCSPX Technologies, Inc.	69,000	$8.5M	0.61%
65	CBTCabot Corp.	92,100	$8.5M	0.61%
66	AIZAssurant, Inc.	45,000	$8.5M	0.61%
67	KWRQuaker Chemical Corporation	40,500	$8.3M	0.60%
68	OSISOsi Systems, Inc.	55,300	$7.9M	0.57%
69	IBPInstalled Building Products, I	30,400	$7.9M	0.57%
70	EZPWEZCorp, Inc.	685,500	$7.8M	0.56%
71	AVNWAviat Networks, Inc.	199,307	$7.6M	0.55%
72	MMSMaximus, Inc.	89,700	$7.5M	0.54%
73	WINGWingstop, Inc.	20,000	$7.3M	0.53%
74	CPRXCatalyst Pharmaceuticals, Inc.	458,400	$7.3M	0.53%
75	PFBCPreferred Bank	95,000	$7.3M	0.53%
76	PLYAPlaya Hotels & Resorts N.V.	751,500	$7.3M	0.53%
77	ATDATI, Inc.	141,900	$7.3M	0.53%
78	PLABPhotronics, Inc.	256,100	$7.3M	0.52%
79	WEAVWeave Communications, Inc.	609,400	$7.0M	0.51%
80	LMBLimbach Hldgs, Inc.	164,800	$6.8M	0.49%
81	CRDOCredo Technology Group	321,900	$6.8M	0.49%
82	IPARInter Parfums	48,300	$6.8M	0.49%
83	RXSTRxSight, Inc.	126,640	$6.5M	0.47%
84	RESRPC, Inc.	838,476	$6.5M	0.47%
85	MCRIMonarch Casino & Resort, Inc.	86,200	$6.5M	0.47%
86	GIIIG-III Apparel Group Ltd.	220,900	$6.4M	0.46%
87	KRYSKrystal Biotech, Inc.	35,700	$6.4M	0.46%
88	FIXComfort Systems USA Inc.	19,800	$6.3M	0.45%
89	PETQEURPetlQ Inc	340,700	$6.2M	0.45%
90	MODModine Mfg Co Com	64,500	$6.1M	0.44%
91	ANFAbercrombie & Fitch Co.	48,100	$6.0M	0.44%
92	TREXTrex Company, Inc.	60,100	$6.0M	0.43%
93	AORTArtivion, Inc	282,400	$6.0M	0.43%
94	ALGMAllegro MicroSystems, Inc.	221,280	$6.0M	0.43%
95	BCBEURPrimo Water Corp.	323,500	$5.9M	0.43%
96	GKDGrand Canyon Education, Inc.	43,200	$5.9M	0.43%
97	UPWKUpwork, Inc.	469,200	$5.8M	0.42%
98	8LP1Vital Energy, Inc.	109,400	$5.7M	0.42%
99	DVAXDynavax Technologies Corp.	462,700	$5.7M	0.42%
100	EOLSEvolus, Inc.	397,300	$5.6M	0.40%

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