OBERWEIS ASSET MANAGEMENT INC/ Q4 2021 Filing

Filed February 14, 2022

Portfolio Value

$548.1B

Holdings

160

Report Date

Q4 2021

Filing Type

13F-HR

All Holdings (160 positions)

#	Stock	Shares	Value	% Portfolio
1	CSTMConstellium NV Cl A	5,491,697	$98.4B	17.94%
2	NVMINova Measuring Instruments	530,200	$77.7B	14.17%
3	DAVAEndava Plc Ads	409,187	$68.7B	12.54%
4	SYNASynaptics, Inc.	51,620	$14.9B	2.73%
5	ACLSAxcelis Technologies	155,000	$11.6B	2.11%
6	—ChannelAdvisor Corporation	382,750	$9.4B	1.72%
7	SESea Ltd	39,200	$8.8B	1.60%
8	SSTKShutterstock, Inc.	73,515	$8.2B	1.49%
9	UCTTUltra Clean Holdings	141,630	$8.1B	1.48%
10	ATECAlphatec Hldgs Inc.	674,170	$7.7B	1.41%
11	DDOGDatadog, Inc. Class A	42,800	$7.6B	1.39%
12	DECKDeckers Outdoor Corp.	20,810	$7.6B	1.39%
13	CDNSCadence Design System, Inc.	36,900	$6.9B	1.25%
14	CROXCrocs, Inc.	49,960	$6.4B	1.17%
15	MTRNMaterion Corp.	69,657	$6.4B	1.17%
16	ANGOAngiodynamics, Inc.	204,210	$5.6B	1.03%
17	INMDInmode Ltd.	79,400	$5.6B	1.02%
18	VRTVEURVeritiv Corp.	42,242	$5.2B	0.94%
19	GU9Guess, Inc	204,781	$4.8B	0.88%
20	AOSLAlpha & Omega Semiconductor	74,000	$4.5B	0.82%
21	BLDRBuilders Firstsource	49,880	$4.3B	0.78%
22	HALOHalozyme Therapeutics, Inc.	105,650	$4.2B	0.78%
23	VCRAUSDVocera Communications, Inc.	61,326	$4.0B	0.73%
24	BOOTBoot Barn Hldgs, Inc.	30,500	$3.8B	0.68%
25	SHOPShopify, Inc.	2,600	$3.6B	0.65%
26	CLFDClearfield, Inc.	40,000	$3.4B	0.62%
27	LNTHLantheus Hldgs Inc.	107,100	$3.1B	0.56%
28	VREXVarex Imaging Corp.	97,600	$3.1B	0.56%
29	ACHCAcadia Healthcare Co., Inc.	47,095	$2.9B	0.52%
30	AMRCAmeresco, Inc.	34,608	$2.8B	0.51%
31	RPDRapid7, Inc.	23,090	$2.7B	0.50%
32	MODNEURModel N, Inc.	88,190	$2.6B	0.48%
33	AVNWAviat Networks, Inc.	82,107	$2.6B	0.48%
34	MXLMaxlinear, Inc. Class A	34,850	$2.6B	0.48%
35	BDCBelden, Inc.	39,270	$2.6B	0.47%
36	DOOREURMasonite Intl Corp.	21,675	$2.6B	0.47%
37	EXTRExtreme Networks, Inc.	160,400	$2.5B	0.46%
38	ZM3Zumiez Inc.	51,300	$2.5B	0.45%
39	G2CEveri Hldgs, Inc.	113,800	$2.4B	0.44%
40	FLLFull House Resorts, Inc.	190,543	$2.3B	0.42%
41	MBUUMalibu Boats, Inc.	32,500	$2.2B	0.41%
42	CAMTCamtek, Ltd.	48,380	$2.2B	0.41%
43	AEHRAehr Test Systems	91,800	$2.2B	0.41%
44	MHOM/I Homes, Inc.	34,900	$2.2B	0.40%
45	XXYCross Country Healthcare, Inc.	77,900	$2.2B	0.39%
46	PENGSmart Global Hldgs, Inc.	30,400	$2.2B	0.39%
47	PERIPerion Network, Ltd.	85,600	$2.1B	0.38%
48	MOVMovado Group, Inc.	48,200	$2.0B	0.37%
49	—Houghton Mifflin Harcourt Comp	124,700	$2.0B	0.37%
50	PRKSSeaWorld Entertainment Inc.	30,460	$2.0B	0.36%
51	DZSIQDZS, Inc.	119,800	$1.9B	0.35%
52	RGPResources Connection, Inc.	106,800	$1.9B	0.35%
53	ARNC1EURArconic Corporation	57,370	$1.9B	0.35%
54	TPDTempur Sealy International, In	39,983	$1.9B	0.34%
55	—Entravision Communications	270,100	$1.8B	0.33%
56	INVNIdentiv Inc.	64,200	$1.8B	0.33%
57	MCRIMonarch Casino & Resort, Inc.	24,400	$1.8B	0.33%
58	—Cyberoptics Corp.	38,700	$1.8B	0.33%
59	STRLSterling Construction Co., Inc	67,900	$1.8B	0.33%
60	HSTMHealthstream Inc.	67,500	$1.8B	0.32%
61	—EnPro Industries, Inc.	15,900	$1.8B	0.32%
62	FORRForrester Research, Inc.	29,700	$1.7B	0.32%
63	SPYSPDR S&P 500 ETF Trust	3,599	$1.7B	0.31%
64	CTSCTS Corp.	46,200	$1.7B	0.31%
65	ICFIICF International, Inc.	16,300	$1.7B	0.31%
66	BJBJs Wholesale Club Holdings, I	24,690	$1.7B	0.30%
67	HSIHeidrick & Struggles	37,400	$1.6B	0.30%
68	RDNTRadnet, Inc.	53,600	$1.6B	0.29%
69	IIIInformation Svcs Group, Inc.	199,800	$1.5B	0.28%
70	SCSCScansource, Inc.	40,400	$1.4B	0.26%
71	VPGVishay Precision Group	37,800	$1.4B	0.26%
72	AKA2GBPa.k.a. Brands Hldg Corp.	151,000	$1.4B	0.25%
73	MBWMMercantile Bank Corp.	39,834	$1.4B	0.25%
74	ADTNEURAdtran, Inc.	59,400	$1.4B	0.25%
75	SHYFShyft Group, Inc.	27,400	$1.3B	0.25%
76	FNKOFunko, Inc.	71,100	$1.3B	0.24%
77	3TYTitan Machinery, Inc.	39,500	$1.3B	0.24%
78	JOUTJohnson Outdoors, Inc.	14,100	$1.3B	0.24%
79	ALNTAllied Motion Technologies	34,100	$1.2B	0.23%
80	—Avid Technology, Inc.	37,100	$1.2B	0.22%
81	PATKPatrick Industries, Inc.	14,800	$1.2B	0.22%
82	OOMAOOMA Inc.	58,300	$1.2B	0.22%
83	TREXTrex Company, Inc.	8,810	$1.2B	0.22%
84	HCKTHackett Group, Inc.	57,500	$1.2B	0.22%
85	CSTLCastle Biosciences, Inc.	26,260	$1.1B	0.21%
86	TLYSTilly's, Inc.	69,700	$1.1B	0.20%
87	DVAXDynavax Technologies Corp.	79,300	$1.1B	0.20%
88	IMXIInternational Money Express, I	68,900	$1.1B	0.20%
89	AAPLApple, Inc.	6,146	$1.1B	0.20%
90	COHUCohu, Inc.	28,576	$1.1B	0.20%
91	SPUSDSP Plus Corporation	37,600	$1.1B	0.19%
92	PRFTUSDPerficient Inc.	8,200	$1.1B	0.19%
93	PTENPatterson-Uti Energy, Inc.	125,200	$1.1B	0.19%
94	TDCTeradata Corp	24,460	$1.0B	0.19%
95	EIGEmployers Holdings, Inc.	25,100	$1.0B	0.19%
96	MSFTMicrosoft Corp.	3,055	$1.0B	0.19%
97	ROFKForce, Inc.	13,600	$1.0B	0.19%
98	—Amtech Systems, Inc.	102,500	$1.0B	0.18%
99	NOTVInotiv, Inc.	23,457	$987.0M	0.18%
100	CERSCerus Corp.	143,100	$975.0M	0.18%

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