OBERWEIS ASSET MANAGEMENT INC/ Q4 2020 Filing

Filed February 16, 2021

Portfolio Value

$379.8M

Holdings

138

Report Date

Q4 2020

Filing Type

13F-HR

All Holdings (138 positions)

#	Stock	Shares	Value	% Portfolio
1	CSTMConstellium NV Cl A	6,380,797	$89.3M	23.50%
2	FVRRFiverr Intl Ltd.	349,224	$68.1M	17.94%
3	DAVAEndava Plc Ads	469,431	$36.0M	9.49%
4	UPWKUpwork, Inc.	401,050	$13.8M	3.65%
5	CSTLCastle Biosciences, Inc.	163,110	$11.0M	2.88%
6	CDNACareDx, Inc.	123,240	$8.9M	2.35%
7	MGNIMagnite, Inc.	275,857	$8.5M	2.23%
8	—ChannelAdvisor Corporation	314,810	$5.0M	1.32%
9	TUPTupperware Corp.	145,780	$4.7M	1.24%
10	DECKDeckers Outdoor Corp.	16,190	$4.6M	1.22%
11	BANDBandwidth, Inc.	29,150	$4.5M	1.18%
12	SSTKShutterstock, Inc.	57,230	$4.1M	1.08%
13	ATECAlphatec Hldgs Inc.	263,400	$3.8M	1.01%
14	VNET21Vianet Group, Inc. - ADR	109,100	$3.8M	1.00%
15	IPHIINPHI Corp.	23,110	$3.7M	0.98%
16	TNDMTandem Diabetes Care, Inc.	36,980	$3.5M	0.93%
17	MODNEURModel N, Inc.	84,480	$3.0M	0.79%
18	APPSDigital Turbine, Inc.	51,275	$2.9M	0.76%
19	COHRII-VI Inc.	36,040	$2.7M	0.72%
20	ADUSAddus Homecare Corp.	22,600	$2.6M	0.70%
21	CA8ACACI International, Inc.	10,225	$2.5M	0.67%
22	RPDRapid7, Inc.	27,560	$2.5M	0.65%
23	—Golden Nugget Online Gaming, I	120,100	$2.4M	0.62%
24	TALTal Education Group ADR	30,000	$2.1M	0.56%
25	SESea Ltd	10,764	$2.1M	0.56%
26	CROXCrocs, Inc.	31,300	$2.0M	0.52%
27	PDDPinduoduo Inc.	11,000	$2.0M	0.51%
28	AMRCAmeresco, Inc.	36,808	$1.9M	0.51%
29	SYNASynaptics, Inc.	19,930	$1.9M	0.51%
30	BILIBilibili, Inc. Spon ADR	22,200	$1.9M	0.50%
31	SHYFShyft Group, Inc.	66,600	$1.9M	0.50%
32	TREXTrex Company, Inc.	21,190	$1.8M	0.47%
33	BJBJs Wholesale Club Holdings, I	46,330	$1.7M	0.45%
34	INMDInmode Ltd.	34,600	$1.6M	0.43%
35	SPYSPDR S&P 500 ETF Trust	4,390	$1.6M	0.43%
36	ZM3Zumiez Inc.	40,300	$1.5M	0.39%
37	ACLSAxcelis Technologies	49,320	$1.4M	0.38%
38	DOOREURMasonite Intl Corp.	14,300	$1.4M	0.37%
39	—LiqTech International, Inc	168,729	$1.4M	0.36%
40	ACHCAcadia Healthcare Co., Inc.	26,195	$1.3M	0.35%
41	UPLDUpland Software, Inc.	28,600	$1.3M	0.35%
42	CAMTCamtek, Ltd.	58,980	$1.3M	0.34%
43	—EnPro Industries, Inc.	16,400	$1.2M	0.33%
44	BOOTBoot Barn Hldgs, Inc.	28,400	$1.2M	0.32%
45	COHUCohu, Inc.	31,676	$1.2M	0.32%
46	TPDTempur Sealy International, In	44,190	$1.2M	0.31%
47	MBUUMalibu Boats, Inc.	19,100	$1.2M	0.31%
48	VCRAUSDVocera Communications, Inc.	28,100	$1.2M	0.31%
49	MHOM/I Homes, Inc.	26,300	$1.2M	0.31%
50	UCTTUltra Clean Holdings	37,000	$1.2M	0.30%
51	MXMagnachip Semiconductor Corp.	85,300	$1.2M	0.30%
52	ATSG*Air Transport Services Group,	36,400	$1.1M	0.30%
53	PPHMEURAvid Bioservices, Inc.	95,500	$1.1M	0.29%
54	SAHSonic Automotive 'a'	28,100	$1.1M	0.29%
55	PRFTUSDPerficient Inc.	22,500	$1.1M	0.28%
56	AAPLApple, Inc.	7,991	$1.1M	0.28%
57	MYRGMYR Group, Inc.	17,600	$1.1M	0.28%
58	—VOXX International Corporation	82,300	$1.1M	0.28%
59	FLXSFlexsteel Inds, Inc.	30,000	$1.0M	0.28%
60	ENSGEnsign Group, Inc.	14,200	$1.0M	0.27%
61	NIONIO Inc	20,000	$975K	0.26%
62	ALNTAllied Motion Technologies	18,600	$950K	0.25%
63	CRAICRA Int'l Inc.	18,500	$942K	0.25%
64	COLLCollegium Pharmaceutical, Inc.	46,000	$921K	0.24%
65	ATHMAutohome, Inc. ADR	9,000	$897K	0.24%
66	ATENA10 Networks, Inc.	88,100	$869K	0.23%
67	OOMAOOMA Inc.	59,400	$855K	0.23%
68	CVGICommercial Vehicle Group	98,000	$848K	0.22%
69	AMEDAmedisys Inc.	2,852	$837K	0.22%
70	—Antares Pharma, Inc.	200,600	$800K	0.21%
71	HSIHeidrick & Struggles	27,000	$793K	0.21%
72	CEVACeva Inc.	16,600	$755K	0.20%
73	GFFGriffon Corp.	36,800	$750K	0.20%
74	IMXIInternational Money Express, I	48,000	$745K	0.20%
75	D0ADada Nexus Limited	19,900	$726K	0.19%
76	LOCOEl Pollo Loco Hldgs, Inc.	38,000	$688K	0.18%
77	FFWMFirst Foundation Inc.	32,800	$656K	0.17%
78	MSFTMicrosoft Corp.	2,920	$649K	0.17%
79	—Arco Platform Ltd. Com Cl A	17,620	$625K	0.16%
80	PTENPatterson-Uti Energy, Inc.	114,000	$600K	0.16%
81	ADTNEURAdtran, Inc.	39,800	$588K	0.15%
82	JPMJP Morgan Chase & Company Inc.	4,477	$569K	0.15%
83	SHOPShopify, Inc.	501	$567K	0.15%
84	XXYCross Country Healthcare, Inc.	63,800	$566K	0.15%
85	VPGVishay Precision Group	17,800	$560K	0.15%
86	CDNSCadence Design System, Inc.	3,956	$540K	0.14%
87	CLFDClearfield, Inc.	21,600	$534K	0.14%
88	MBWMMercantile Bank Corp.	19,500	$530K	0.14%
89	JYNTThe Joint Corp.	20,000	$525K	0.14%
90	FTCHQFarfetch Ltd.	7,900	$504K	0.13%
91	EFSCEnterprise Finl Svcs	14,256	$498K	0.13%
92	MAMastercard, Inc.	1,344	$480K	0.13%
93	PLPCPreformed Line Prods Co.	7,000	$479K	0.13%
94	RBBNRibbon Communications, Inc.	72,000	$472K	0.12%
95	BABAAlibaba Group Holding Ltd ADR	2,010	$468K	0.12%
96	NGVCNatural Grocers By Vitamin C	31,200	$429K	0.11%
97	MRCYMercury Systems, Inc.	4,790	$422K	0.11%
98	UUnity Software, Inc.	2,664	$409K	0.11%
99	DSKEUSDDaseke, Inc.	70,000	$407K	0.11%
100	—Inovalon Holdings, Inc.	22,080	$401K	0.11%

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