OBERWEIS ASSET MANAGEMENT INC/ Q4 2022 Filing

Filed February 14, 2023

Portfolio Value

$470.4M

Holdings

168

Report Date

Q4 2022

Filing Type

13F-HR

All Holdings (168 positions)

#	Stock	Shares	Value	% Portfolio
1	CSTMConstellium NV Cl A	4,939,312	$58.0M	12.33%
2	ACLSAxcelis Technologies	279,549	$22.0M	4.68%
3	AEHRAehr Test Systems	607,608	$12.0M	2.55%
4	PIImpinj, Inc.	110,665	$12.0M	2.55%
5	CROXCrocs, Inc.	104,050	$11.0M	2.34%
6	DECKDeckers Outdoor Corp.	27,120	$10.0M	2.13%
7	SMCIUSDSuper Micro Computer Inc.	121,240	$9.0M	1.91%
8	CLFDClearfield, Inc.	94,540	$8.0M	1.70%
9	HALOHalozyme Therapeutics, Inc.	143,390	$8.0M	1.70%
10	LNTHLantheus Hldgs Inc.	164,940	$8.0M	1.70%
11	VRTVEURVeritiv Corp.	62,142	$7.0M	1.49%
12	PERIPerion Network, Ltd.	247,400	$6.0M	1.28%
13	ATECAlphatec Hldgs Inc.	503,290	$6.0M	1.28%
14	BDCBelden, Inc.	91,769	$6.0M	1.28%
15	CLHClean Harbors, Inc.	48,335	$5.0M	1.06%
16	TMDXTransMedics Group, Inc.	82,400	$5.0M	1.06%
17	MODNEURModel N, Inc.	145,340	$5.0M	1.06%
18	CDNSCadence Design System, Inc.	25,500	$4.0M	0.85%
19	ACHCAcadia Healthcare Co., Inc.	58,780	$4.0M	0.85%
20	AMRCAmeresco, Inc.	86,208	$4.0M	0.85%
21	ICFIICF International, Inc.	43,400	$4.0M	0.85%
22	CIENCiena Corporation	80,385	$4.0M	0.85%
23	MXLMaxlinear, Inc. Class A	113,460	$3.0M	0.64%
24	SYNASynaptics, Inc.	36,410	$3.0M	0.64%
25	G2CEveri Hldgs, Inc.	224,800	$3.0M	0.64%
26	MGPIMGP Ingredients, Inc.	33,501	$3.0M	0.64%
27	ALGMAllegro MicroSystems, Inc.	115,200	$3.0M	0.64%
28	INMDInmode Ltd.	93,950	$3.0M	0.64%
29	PRKSSeaWorld Entertainment Inc.	57,200	$3.0M	0.64%
30	AMPHAmphastar Pharmaceuticals, Inc	134,000	$3.0M	0.64%
31	D0ADada Nexus Limited	457,672	$3.0M	0.64%
32	BELFBBel Fuse, Inc.	114,800	$3.0M	0.64%
33	TWITitan Int'l Inc.	225,200	$3.0M	0.64%
34	EVHEvolent Health, Inc.	139,340	$3.0M	0.64%
35	FNFabrinet	28,515	$3.0M	0.64%
36	—Applied Industrial	16,600	$2.0M	0.43%
37	CECOCECO Environmental Corp.	182,100	$2.0M	0.43%
38	RESRPC, Inc.	292,900	$2.0M	0.43%
39	ADMAADMA Biologics, Inc.	536,900	$2.0M	0.43%
40	CBTCabot Corp.	44,747	$2.0M	0.43%
41	SPUSDSP Plus Corporation	67,600	$2.0M	0.43%
42	FCFranklin Covey Co.	46,300	$2.0M	0.43%
43	CHEFThe Chefs Warehouse, Inc.	66,900	$2.0M	0.43%
44	STRLSterling Construction Co., Inc	80,600	$2.0M	0.43%
45	DXLGDestination XL Group, Inc.	338,100	$2.0M	0.43%
46	OSPNOneSpan, Inc.	216,900	$2.0M	0.43%
47	MTSIMacom Technology Solutions	38,400	$2.0M	0.43%
48	FELEFranklin Electric	26,600	$2.0M	0.43%
49	ADTNAdtran, Inc.	116,400	$2.0M	0.43%
50	HEESEURH&E Equipment Services, Inc.	50,100	$2.0M	0.43%
51	CALXCalix, Inc.	37,900	$2.0M	0.43%
52	IPARInter Parfums	22,100	$2.0M	0.43%
53	PFBCPreferred Bank	30,200	$2.0M	0.43%
54	AVNWAviat Networks, Inc.	83,307	$2.0M	0.43%
55	—EnPro Industries, Inc.	19,300	$2.0M	0.43%
56	XXYCross Country Healthcare, Inc.	77,700	$2.0M	0.43%
57	EXTRExtreme Networks, Inc.	150,100	$2.0M	0.43%
58	PDCEUSDPDC Energy, Inc.	37,705	$2.0M	0.43%
59	FSSFederal Signal Corp.	57,100	$2.0M	0.43%
60	EZPWEZCorp, Inc.	262,000	$2.0M	0.43%
61	ATENA10 Networks, Inc.	131,200	$2.0M	0.43%
62	PDDPinduoduo Inc.	35,000	$2.0M	0.43%
63	UCTTUltra Clean Holdings	67,900	$2.0M	0.43%
64	PTENPatterson-Uti Energy, Inc.	139,100	$2.0M	0.43%
65	SOYSunOpta, Inc.	262,600	$2.0M	0.43%
66	VCYTVeracyte, Inc.	92,400	$2.0M	0.43%
67	VCVisteon Corp.	22,400	$2.0M	0.43%
68	MMSIMerit Medical System Inc	35,600	$2.0M	0.43%
69	TCMDTactile Sys Technology, Inc.	204,200	$2.0M	0.43%
70	VVXV2X, Inc.	50,100	$2.0M	0.43%
71	MBWMMercantile Bank Corp.	49,819	$1.0M	0.21%
72	CRKComstock Res	142,800	$1.0M	0.21%
73	UNMUNUM Group	29,000	$1.0M	0.21%
74	NOVNOV, Inc.	80,800	$1.0M	0.21%
75	PRSUViad Corp.	51,100	$1.0M	0.21%
76	CPRXCatalyst Pharmaceuticals, Inc.	96,600	$1.0M	0.21%
77	PLYAPlaya Hotels & Resorts N.V.	284,100	$1.0M	0.21%
78	WAFDWashington Federal, Inc.	43,200	$1.0M	0.21%
79	ABMABM Industries, Inc.	44,500	$1.0M	0.21%
80	ALTGAlta Equipment Group, Inc.	93,600	$1.0M	0.21%
81	SCSCScansource, Inc.	46,800	$1.0M	0.21%
82	NSPInsperity, Inc.	13,700	$1.0M	0.21%
83	VSECVSE Corp.	26,100	$1.0M	0.21%
84	UFPIUFP Industries, Inc.	14,700	$1.0M	0.21%
85	TMETencent Music Entertainment	175,000	$1.0M	0.21%
86	NRDSNerdWallet, Inc.	175,900	$1.0M	0.21%
87	HCQAMN Healthcare Svcs	15,200	$1.0M	0.21%
88	EIGEmployers Holdings, Inc.	38,500	$1.0M	0.21%
89	37MMRC Global, Inc.	119,900	$1.0M	0.21%
90	OXMOxford Inds, Inc.	17,500	$1.0M	0.21%
91	MPMP Materials Corp.	48,000	$1.0M	0.21%
92	VPGVishay Precision Group	43,600	$1.0M	0.21%
93	KWRQuaker Chemical Corporation	11,600	$1.0M	0.21%
94	FWRDUSDForward Air Corp.	9,800	$1.0M	0.21%
95	NVEEUSDNV5 Global, Inc	11,800	$1.0M	0.21%
96	FLLFull House Resorts, Inc.	221,743	$1.0M	0.21%
97	HAEHaemonetics Corp.	19,700	$1.0M	0.21%
98	ALNTAllied Motion Technologies	46,400	$1.0M	0.21%
99	CERSCerus Corp.	283,900	$1.0M	0.21%
100	MTDRMatador Resources Company	30,300	$1.0M	0.21%

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