OBERWEIS ASSET MANAGEMENT INC/ Q2 2021 Filing

Filed August 16, 2021

Portfolio Value

$456.5B

Holdings

163

Report Date

Q2 2021

Filing Type

13F-HR

All Holdings (163 positions)

#	Stock	Shares	Value	% Portfolio
1	CSTMConstellium NV Cl A	6,592,097	$124.9B	27.37%
2	DAVAEndava Plc Ads	597,721	$67.8B	14.85%
3	SESea Ltd	56,863	$15.6B	3.42%
4	—ChannelAdvisor Corporation	418,280	$10.3B	2.25%
5	ORGOOrganogenesis Hlgs, Inc.	561,608	$9.3B	2.04%
6	SYNASynaptics, Inc.	55,560	$8.6B	1.89%
7	SSTKShutterstock, Inc.	76,282	$7.5B	1.64%
8	DECKDeckers Outdoor Corp.	19,150	$7.4B	1.61%
9	INMDInmode Ltd.	70,660	$6.7B	1.47%
10	ATECAlphatec Hldgs Inc.	435,530	$6.7B	1.46%
11	COHRII-VI Inc.	79,060	$5.7B	1.26%
12	CROXCrocs, Inc.	48,770	$5.7B	1.24%
13	CSTLCastle Biosciences, Inc.	74,060	$5.4B	1.19%
14	ACLSAxcelis Technologies	128,080	$5.2B	1.13%
15	UPWKUpwork, Inc.	85,070	$5.0B	1.09%
16	SHOPShopify, Inc.	3,320	$4.8B	1.06%
17	UCTTUltra Clean Holdings	86,580	$4.7B	1.02%
18	CDNACareDx, Inc.	46,830	$4.3B	0.94%
19	GU9Guess, Inc	147,708	$3.9B	0.85%
20	MBUUMalibu Boats, Inc.	46,630	$3.4B	0.75%
21	MODNEURModel N, Inc.	93,310	$3.2B	0.70%
22	HALOHalozyme Therapeutics, Inc.	69,200	$3.1B	0.69%
23	CDNSCadence Design System, Inc.	21,524	$2.9B	0.65%
24	AVNWAviat Networks, Inc.	89,607	$2.9B	0.64%
25	ACHCAcadia Healthcare Co., Inc.	42,995	$2.7B	0.59%
26	BOOTBoot Barn Hldgs, Inc.	32,000	$2.7B	0.59%
27	ANGOAngiodynamics, Inc.	98,300	$2.7B	0.58%
28	RRNRed Robin Gourmet Burger	79,200	$2.6B	0.57%
29	AMRCAmeresco, Inc.	40,908	$2.6B	0.56%
30	VRTVEURVeritiv Corp.	41,500	$2.5B	0.56%
31	DOOREURMasonite Intl Corp.	22,075	$2.5B	0.54%
32	RDNTRadnet, Inc.	71,400	$2.4B	0.53%
33	ZM3Zumiez Inc.	47,800	$2.3B	0.51%
34	—Entravision Communications	331,400	$2.2B	0.49%
35	BLDRBuilders Firstsource	46,420	$2.0B	0.43%
36	AVYAUSDAvaya Hldgs Corp.	73,260	$2.0B	0.43%
37	HSIHeidrick & Struggles	43,500	$1.9B	0.42%
38	LILI Auto, Inc. ADR	55,000	$1.9B	0.42%
39	SPYSPDR S&P 500 ETF Trust	4,388	$1.9B	0.41%
40	TREXTrex Company, Inc.	18,040	$1.8B	0.40%
41	PRFTUSDPerficient Inc.	22,500	$1.8B	0.40%
42	TUPTupperware Corp.	73,990	$1.8B	0.38%
43	CLFDClearfield, Inc.	44,900	$1.7B	0.37%
44	VCRAUSDVocera Communications, Inc.	40,426	$1.6B	0.35%
45	RPDRapid7, Inc.	17,010	$1.6B	0.35%
46	TPDTempur Sealy International, In	39,471	$1.5B	0.34%
47	CAMTCamtek, Ltd.	40,980	$1.5B	0.34%
48	—Golden Nugget Online Gaming, I	120,300	$1.5B	0.34%
49	VREXVarex Imaging Corp.	57,200	$1.5B	0.34%
50	MOVMovado Group, Inc.	48,200	$1.5B	0.33%
51	FLLFull House Resorts, Inc.	152,543	$1.5B	0.33%
52	MXLMaxlinear, Inc. Class A	35,450	$1.5B	0.33%
53	STRLSterling Construction Co., Inc	61,600	$1.5B	0.33%
54	BILIBilibili, Inc. Spon ADR	12,100	$1.5B	0.32%
55	ROFKForce, Inc.	23,100	$1.5B	0.32%
56	XXYCross Country Healthcare, Inc.	85,900	$1.4B	0.31%
57	CVGICommercial Vehicle Group	131,800	$1.4B	0.31%
58	IIIInformation Svcs Group, Inc.	235,000	$1.4B	0.30%
59	AOSLAlpha & Omega Semiconductor	45,000	$1.4B	0.30%
60	DZSIQDZS, Inc.	65,500	$1.4B	0.30%
61	DBDEURDiebold, Inc.	104,300	$1.3B	0.29%
62	SSUPSuperior Industries Intl. Inc.	152,498	$1.3B	0.29%
63	ARNC1EURArconic Corporation	36,400	$1.3B	0.28%
64	HCKTHackett Group, Inc.	72,000	$1.3B	0.28%
65	FTCHQFarfetch Ltd.	25,700	$1.3B	0.28%
66	NOTVInotiv, Inc.	47,700	$1.3B	0.28%
67	STIMNeuronetics, Inc.	78,500	$1.3B	0.28%
68	QFIN360 DigiTech, Inc.	30,000	$1.3B	0.27%
69	—LiqTech International, Inc	168,729	$1.2B	0.27%
70	FLXSFlexsteel Inds, Inc.	30,000	$1.2B	0.27%
71	—EnPro Industries, Inc.	12,400	$1.2B	0.26%
72	MHOM/I Homes, Inc.	20,300	$1.2B	0.26%
73	EXTRExtreme Networks, Inc.	106,200	$1.2B	0.26%
74	—VOXX International Corporation	84,000	$1.2B	0.26%
75	ABT2EURAbsolute Software Corp.	80,500	$1.2B	0.26%
76	COHUCohu, Inc.	31,676	$1.2B	0.26%
77	FUTUFutu Holdings Ltd.	6,500	$1.2B	0.25%
78	LOCOEl Pollo Loco Hldgs, Inc.	63,000	$1.2B	0.25%
79	PTENPatterson-Uti Energy, Inc.	114,000	$1.1B	0.25%
80	JOUTJohnson Outdoors, Inc.	9,300	$1.1B	0.25%
81	VPGVishay Precision Group	32,800	$1.1B	0.24%
82	MBWMMercantile Bank Corp.	36,074	$1.1B	0.24%
83	BJBJs Wholesale Club Holdings, I	22,250	$1.1B	0.23%
84	TBITrueBlue, Inc.	36,500	$1.0B	0.22%
85	SHYFShyft Group, Inc.	27,400	$1.0B	0.22%
86	PPHMEURAvid Bioservices, Inc.	39,700	$1.0B	0.22%
87	AAPLApple, Inc.	7,334	$1.0B	0.22%
88	—Cyberoptics Corp.	24,200	$991.0M	0.22%
89	HOFTHooker Furniture Corp	28,500	$987.0M	0.22%
90	CTSCTS Corp.	26,000	$966.0M	0.21%
91	ALNTAllied Motion Technologies	27,900	$963.0M	0.21%
92	GFFGriffon Corp.	36,800	$943.0M	0.21%
93	EIGEmployers Holdings, Inc.	22,000	$942.0M	0.21%
94	RESRPC, Inc.	189,400	$938.0M	0.21%
95	OOMAOOMA Inc.	49,300	$930.0M	0.20%
96	—Luna Innovations	85,000	$921.0M	0.20%
97	MYRGMYR Group, Inc.	10,100	$918.0M	0.20%
98	HSTMHealthstream Inc.	32,600	$911.0M	0.20%
99	3TYTitan Machinery, Inc.	29,000	$897.0M	0.20%
100	—Antares Pharma, Inc.	200,600	$875.0M	0.19%

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