Oberweis Asset Management 13FHR Quarterly holdings report by institutional manager | SEC 16 Nov 20

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

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COLUMN 1	COLUMN 2	COLUMN 3	COLUMN 4	COLUMN 5			COLUMN 6	COLUMN 7	COLUMN 8
			VALUE	SHRS OR	SH/	PUT/	INVESTMENT	OTHER	VOTING AUTHORITY
NAME OF ISSUER	TITLE OF CLASS	CUSIP	(x$1000)	PRN AMT	PRN	CALL	DISCRETION	MANAGER	SOLE	SHARED	NONE
21Vianet Group, Inc. - ADR	com	90138A103	1,853	80,000	SH		SOLE		80,000	0	0
ACM Research, Inc. Class A	com	00108J109	713	10,320	SH		SOLE		10,320	0	0
AMR Corp Escrow	com	001ESC102	0	18,000	SH		SOLE		18,000	0	0
Accuray Inc.	com	004397105	435	181,200	SH		SOLE		181,200	0	0
Addus Homecare Corp.	com	006739106	2,130	22,540	SH		SOLE		18,210	0	4,330
Adtran, Inc.	com	00738A106	408	39,800	SH		SOLE		39,800	0	0
Air Transport Services Group,	com	00922R105	967	38,580	SH		SOLE		38,100	0	480
Alibaba Group Holding Ltd ADR	com	01609W102	607	2,065	SH		SOLE		130	0	1,935
Allied Motion Technologies	com	019330109	722	17,500	SH		SOLE		17,500	0	0
Alphatec Hldgs Inc.	com	02081G201	914	137,600	SH		SOLE		137,600	0	0
Amazon.com	com	023135106	315	100	SH		SOLE		0	0	100
Amedisys Inc.	com	023436108	709	3,000	SH		SOLE		3,000	0	0
Ameresco, Inc.	com	02361E108	1,487	44,508	SH		SOLE		44,508	0	0
American Power Corp	com	02906T107	0	10,000	SH		SOLE		0	0	10,000
Amgen, Inc.	com	031162100	380	1,493	SH		SOLE		0	0	1,493
Antares Pharma, Inc.	com	036642106	542	200,600	SH		SOLE		200,600	0	0
Apple, Inc.	com	037833100	992	8,569	SH		SOLE		240	0	8,329
Arco Platform Ltd. Com Cl A	com	G04553106	748	18,310	SH		SOLE		18,310	0	0
Arcosa, Inc.	com	039653100	203	4,600	SH		SOLE		4,600	0	0
Audio Codes ADR	com	M15342104	14,724	468,012	SH		SOLE		337,698	0	130,314
Avatar Ventures	com	05350B100	0	10,000	SH		SOLE		0	0	10,000
Axcelis Technologies	com	054540208	1,236	56,170	SH		SOLE		43,780	0	12,390
BJs Wholesale Club Holdings, I	com	05550J101	1,895	45,600	SH		SOLE		35,650	0	9,950
Bandwidth, Inc.	com	05988J103	7,538	43,179	SH		SOLE		34,259	0	8,920
Baudax Bio, Inc.	com	07160F107	369	133,160	SH		SOLE		133,160	0	0
BioDelivery Sciences Internati	com	09060J106	645	172,850	SH		SOLE		170,750	0	2,100
Boot Barn Hldgs, Inc.	com	099406100	704	25,000	SH		SOLE		25,000	0	0
Bottomline Technologies	com	101388106	1,256	29,780	SH		SOLE		27,130	0	2,650
CACI International, Inc.	com	127190304	2,137	10,025	SH		SOLE		6,820	0	3,205
CRA Int'l Inc.	com	12618T105	693	18,500	SH		SOLE		18,500	0	0
Cadence Design System, Inc.	com	127387108	346	3,241	SH		SOLE		3,241	0	0
Camtek, Ltd.	com	M20791105	907	58,980	SH		SOLE		58,980	0	0
CareDx, Inc.	com	14167L103	4,511	118,900	SH		SOLE		101,550	0	17,350
Castle Biosciences, Inc.	com	14843C105	8,269	160,720	SH		SOLE		121,100	0	39,620
Ceva Inc.	com	157210105	870	22,100	SH		SOLE		22,100	0	0
ChannelAdvisor Corporation	com	159179100	4,622	319,390	SH		SOLE		272,670	0	46,720
Clearfield, Inc.	com	18482P103	436	21,600	SH		SOLE		21,600	0	0
Collegium Pharmaceutical, Inc.	com	19459J104	1,108	53,200	SH		SOLE		53,200	0	0
Constellium NV Cl A	com	F21107101	49,261	6,275,307	SH		SOLE		4,531,007	0	1,744,300
Crocs, Inc.	com	227046109	1,884	44,100	SH		SOLE		44,100	0	0
Dada Nexus Limited	com	23344D108	265	10,000	SH		SOLE		10,000	0	0
Deckers Outdoor Corp.	com	243537107	3,509	15,950	SH		SOLE		10,480	0	5,470
Digital Turbine, Inc.	com	25400W102	2,891	88,300	SH		SOLE		88,300	0	0
El Pollo Loco Hldgs, Inc.	com	268603107	530	32,700	SH		SOLE		32,700	0	0
EnPro Industries, Inc.	com	29355x107	795	14,100	SH		SOLE		14,100	0	0
Endava Plc Ads	com	29260V105	26,459	418,982	SH		SOLE		305,282	0	113,700
Ensign Group, Inc.	com	29358P101	1,295	22,700	SH		SOLE		22,700	0	0
Enterprise Finl Svcs	com	293712105	785	28,805	SH		SOLE		15,620	0	13,185
EverQuote, Inc.	com	30041R108	483	12,500	SH		SOLE		12,500	0	0
Faro Technologies, Inc.	com	311642102	1,195	19,600	SH		SOLE		19,600	0	0
First Foundation Inc.	com	32026V104	344	26,300	SH		SOLE		26,300	0	0
Fiverr Intl Ltd.	com	M4R82T106	65,514	471,394	SH		SOLE		340,194	0	131,200
GDS Holdings Ltd. ADR	com	36165L108	2,583	31,561	SH		SOLE		31,461	0	100
Graphic Packaging Hldg., Co.	com	388689101	172	12,200	SH		SOLE		12,200	0	0
Green Dot Corp. Cl A	com	39304D102	243	4,800	SH		SOLE		4,800	0	0
Griffon Corp.	com	398433102	719	36,800	SH		SOLE		36,800	0	0
Helen of Troy Corp., Ltd.	com	G4388N106	213	1,100	SH		SOLE		1,100	0	0
Helix Energy Solutions Group,	com	42330p107	201	83,300	SH		SOLE		83,300	0	0
Huron Consulting Group, Inc.	com	447462102	653	16,600	SH		SOLE		16,600	0	0
I-Mab ADR	com	44975P103	470	10,000	SH		SOLE		10,000	0	0
II-VI Inc.	com	902104108	1,586	39,110	SH		SOLE		27,720	0	11,390
INPHI Corp.	com	45772F107	4,774	42,530	SH		SOLE		26,810	0	15,720
Inmode Ltd.	com	M5425M103	970	26,800	SH		SOLE		26,800	0	0
Inovalon Holdings, Inc.	com	45781D101	1,684	63,680	SH		SOLE		38,000	0	25,680
Intel Corporation	com	458140100	307	5,934	SH		SOLE		0	0	5,934
International Money Express, I	com	46005L101	520	36,200	SH		SOLE		36,200	0	0
JP Morgan Chase & Company Inc.	com	46625H100	431	4,473	SH		SOLE		140	0	4,333
Johnson & Johnson	com	478160104	369	2,481	SH		SOLE		0	0	2,481
LI Auto, Inc. ADR	com	50202M102	530	30,500	SH		SOLE		30,500	0	0
Limelight Networks, Inc.	com	53261M104	1,181	205,100	SH		SOLE		205,100	0	0
LiqTech International, Inc	com	53632A201	1,426	168,729	SH		SOLE		168,729	0	0
Liveperson, Inc.	com	538146101	224	4,300	SH		SOLE		4,300	0	0
M/I Homes, Inc.	com	55305B101	1,151	25,000	SH		SOLE		25,000	0	0
MYR Group, Inc.	com	55405W104	837	22,500	SH		SOLE		22,500	0	0
Macom Technology Solutions	com	55405Y100	201	5,900	SH		SOLE		5,900	0	0
Magnachip Semiconductor Corp.	com	55933J203	1,110	81,000	SH		SOLE		81,000	0	0
Magnite, Inc.	com	55955D100	1,906	274,507	SH		SOLE		192,187	0	82,320
Malibu Boats, Inc.	com	56117J100	788	15,900	SH		SOLE		15,900	0	0
Masonite Intl Corp.	com	575385109	1,338	13,600	SH		SOLE		13,600	0	0
Mastercard, Inc.	com	57636Q104	454	1,343	SH		SOLE		0	0	1,343
Matson, Inc.	com	57686g105	204	5,100	SH		SOLE		4,700	0	400
McDonald's Corporation	com	580135101	234	1,068	SH		SOLE		0	0	1,068
Mercantile Bank Corp.	com	587376104	332	18,400	SH		SOLE		18,400	0	0
Mercury Systems, Inc.	com	589378108	613	7,910	SH		SOLE		3,410	0	4,500
Merit Medical System Inc	com	589889104	235	5,400	SH		SOLE		5,400	0	0
Microsoft Corp.	com	594918104	629	2,990	SH		SOLE		0	0	2,990
Model N, Inc.	com	607525102	2,877	81,540	SH		SOLE		66,430	0	15,110
NIO Inc	com	62914V106	1,698	80,000	SH		SOLE		80,000	0	0
Natural Grocers By Vitamin C	com	63888U108	225	22,800	SH		SOLE		22,800	0	0
New Oriental Education ADR	com	647581107	1,570	10,500	SH		SOLE		10,500	0	0
Newmont Mining	com	651639106	405	6,381	SH		SOLE		400	0	5,981
OOMA Inc.	com	683416101	775	59,400	SH		SOLE		59,400	0	0
OneSpan, Inc.	com	68287N100	952	45,400	SH		SOLE		42,700	0	2,700
Oxford Immunotec Global Plc	com	G6855A103	495	42,300	SH		SOLE		42,300	0	0
Perdoceo Education Corp.	com	71363P106	424	34,659	SH		SOLE		34,659	0	0
Perficient Inc.	com	71375U101	962	22,500	SH		SOLE		22,500	0	0
Preformed Line Prods Co.	com	740444104	341	7,000	SH		SOLE		7,000	0	0
Rapid7, Inc.	com	753422104	1,786	29,160	SH		SOLE		16,750	0	12,410
Resmed Inc.	com	761152107	249	1,450	SH		SOLE		0	0	1,450
SVMK Inc	com	78489X103	780	35,300	SH		SOLE		9,890	0	25,410
Sea Ltd	com	81141R100	1,716	11,137	SH		SOLE		11,137	0	0
Shopify, Inc.	com	82509L107	367	359	SH		SOLE		359	0	0
Shutterstock, Inc.	com	825690100	779	14,960	SH		SOLE		6,110	0	8,850
Shyft Group, Inc.	com	825698103	1,257	66,600	SH		SOLE		66,600	0	0
Sonic Automotive 'a'	com	83545G102	1,128	28,100	SH		SOLE		28,100	0	0
Synaptics, Inc.	com	87157D109	876	10,890	SH		SOLE		5,130	0	5,760
Synnex Corp.	com	87162W100	224	1,600	SH		SOLE		1,600	0	0
TTEC Hldgs, Inc.	com	89854H102	218	4,000	SH		SOLE		4,000	0	0
Tal Education Group ADR	com	874080104	2,509	33,000	SH		SOLE		33,000	0	0
Tandem Diabetes Care, Inc.	com	875372203	6,057	53,370	SH		SOLE		35,960	0	17,410
Tempur Sealy International, In	com	88023U101	330	3,700	SH		SOLE		3,700	0	0
The Travelers Co., Inc.	com	89417E109	269	2,485	SH		SOLE		0	0	2,485
Titan Oil & Gas, Inc.	com	888309101	0	10,000	SH		SOLE		0	0	10,000
Trex Company, Inc.	com	89531P105	1,539	21,500	SH		SOLE		12,740	0	8,760
Truecar, Inc.	com	89785L107	650	130,000	SH		SOLE		130,000	0	0
US Xpress Enterprises, Inc.	com	90338N202	958	116,000	SH		SOLE		116,000	0	0
Ultra Clean Holdings	com	90385V107	839	39,100	SH		SOLE		39,100	0	0
Upland Software, Inc.	com	91544A109	1,120	29,700	SH		SOLE		29,700	0	0
Upwork, Inc.	com	91688F104	6,985	400,500	SH		SOLE		320,280	0	80,220
Verizon Communications	com	92343V104	203	3,412	SH		SOLE		0	0	3,412
Vocera Communications, Inc.	com	92857F107	817	28,100	SH		SOLE		28,100	0	0
Wal Mart Stores Inc.	com	931142103	246	1,757	SH		SOLE		0	0	1,757
Xenacare Hldgs, Inc.	com	98401A106	0	140,000	SH		SOLE		0	0	140,000
Zumiez Inc.	com	989817101	1,121	40,300	SH		SOLE		40,300	0	0
eGain Corp.	com	28225C806	937	66,100	SH		SOLE		66,100	0	0
SPDR S&P 500 ETF Trust	com	78462F103	1,465	4,376	SH		SOLE		0	0	4,376

Oberweis Asset Management 13F-HRQuarterly holdings report by institutional manager