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Oberweis Asset Management Inc

Portfolio

Holdings

Most recent quarter

% of Total Shares

% of Total Assets

Shares

Book Value

Market Price Value

Fundamental Score

Communication Equipment

2024-09-30

1.921

0.635

865.9k

$3.7m

$35.4m

Acm Research Inc

Semiconductor Equipment & Materials

2024-09-30

0.665

0.433

416.5k

$6.6m

$6.5m

ADMA Biologics Inc

2024-09-30

1.23

2.978

2.9m

$2.7m

$52m

Aehr Test Systems

Semiconductor Equipment & Materials

2024-08-31

1.804

0.352

534.4k

$2.2m

$8.7m

Drug Manufacturers - Specialty & Generic

2024-09-30

0.853

1.327

417.8k

$5.8m

$15.9m

American Superconductor Corporation

Specialty Industrial Machinery

2024-09-30

1.684

0.803

664.4k

$3.1m

$17.5m

Medical Devices

2024-09-30

0.674

0.385

282.4k

$2m

$8.2m

Alpha and Omega Semiconductor Ltd

2024-09-30

0.705

0.389

204.7k

$6.3m

$8.4m

Amtech Systems Inc

Semiconductor Equipment & Materials

2024-09-30

0.838

0.096

118.9k

$685.9k

$644.4k

Alphatec Holdings Inc

Medical Devices

2024-09-30

0.987

1.382

1.3m

-$12.4k

$12.9m

Aviat Networks Inc

Communication Equipment

2024-09-30

1.571

0.221

199.3k

$3.8m

$3.5m

Software - Infrastructure

2024-09-30

0.231

0.303

425k

$449.6k

$7.4m

Semiconductor Equipment & Materials

2024-09-30

1.935

0.107

865.7k

$5.1m

$1.9m

Electronic Components

2024-09-30

0.953

0.616

121.5k

$3.5m

$10.2m

Farm & Heavy Construction Machinery

2024-09-30

0.937

0.823

301.3k

$1.4m

$12m

Software - Infrastructure

2024-09-30

1.044

0.176

538.7k

$447.1k

$3.4m

Medical Devices

2024-09-30

0.782

0.313

510.9k

$1.4m

$5.6m

Semiconductor Equipment & Materials

2024-09-30

0.331

0.642

148.2k

$1.4m

$12.4m

Communication Equipment

2024-09-30

0.62

1.892

94.5k

$1.8m

$2.9m

Clearwater Paper Corporation

Basic Materials

Paper & Paper Products

2024-09-30

1.058

0.256

175.2k

$7m

$5.5m

Basic Materials

2024-09-30

1.257

2.125

1.8m

$11.9m

$19m

CVD Equipment Corporation

Specialty Industrial Machinery

2024-09-30

1.509

0.073

103k

$373.7k

$408.9k

CYBE.NASDAQ

-

-

-

-

0.576

0.378

42.8k

-

-

Consumer Cyclical

Internet Retail

2024-09-30

0.179

0.678

457.6k

$1.3m

$627k

Software - Infrastructure

2024-09-30

0.697

8.844

395.8k

$5.2m

$12m

Destination XL Group Inc

Consumer Cyclical

2024-10-31

0.717

0.198

415.7k

$997.2k

$1.2m

Communication Equipment

2024-09-30

0.421

0.485

117.8k

$98.2k

$82.4k

Financial Services

Credit Services

2024-09-30

1.259

0.394

685.5k

$6.6m

$8.4m

Full House Resorts Inc

Consumer Cyclical

Resorts & Casinos

2024-09-30

0.645

0.101

223.1k

$324.8k

$881.4k

KVH Industries Inc

Communication Equipment

2024-09-30

0.466

0.101

91k

$655.8k

$487.7k

Limbach Holdings Inc

Building Products & Equipment

2024-09-30

0.983

0.43

110.8k

$1.3m

$9.7m

LSI Industries Inc

Electronic Components

2024-09-30

1.028

0.504

298.7k

$2m

$5.9m

Mercantile Bank Corporation

Financial Services

Banks - Regional

2024-09-30

0.557

0.224

89.8k

$3.2m

$4m

Natural Grocers by Vitamin Cottage Inc

Consumer Defensive

2024-09-30

0.459

0.16

105k

$789.4k

$4.2m

Nicolet Bankshares Inc.

Financial Services

Banks - Regional

2024-09-30

0.305

0.227

46.4k

$3.4m

$4.9m

Nine Energy Service Inc

Oil & Gas Equipment & Services

2024-09-30

0.667

0.11

235.8k

-$320.4k

$245.2k

Communication Services

Internet Content & Information

2024-09-30

0.232

0.359

175.9k

$715.2k

$2.3m

Semiconductor Equipment & Materials

2024-09-30

1.803

10.33

517.2k

$14.5m

$104.7m

Navitas Semiconductor Corp

2024-09-30

0.542

0.244

1m

$2m

$4.1m

Software - Infrastructure

2024-09-30

0.976

0.317

370.7k

$1.8m

$7m

Communication Services

Internet Content & Information

2024-09-30

0.971

1.53

470.2k

$7m

$3.9m

Playa Hotels & Resorts BV

Consumer Cyclical

Resorts & Casinos

2024-09-30

0.636

0.307

772.5k

$2.9m

$9.4m

RF Industries Ltd

Electrical Equipment & Parts

2024-07-31

0.613

0.032

63.1k

$205.2k

$244.8k

Rush Street Interactive Inc

Consumer Cyclical

2024-09-30

1.097

0.54

971.9k

$787.2k

$13m

Tactile Systems Technology Inc

Medical Devices

2024-09-30

1.4

0.493

330.3k

$2.8m

$5.7m

Ultra Clean Holdings Inc

Semiconductor Equipment & Materials

2024-09-30

0.977

0.9

440.1k

$9m

$16.3m

Universal Logistics Holdings Inc

2024-09-30

0.262

0.152

69k

$1.6m

$3.2m

Universal Stainless & Alloy

Basic Materials

2024-09-30

0.859

0.16

80.9k

$2m

$3.5m

Weave Communications Inc

Health Information Services

2024-09-30

0.837

0.4

609.4k

$576.4k

$9.7m

Willdan Group Inc

Engineering & Construction

2024-09-30

0.565

0.14

79.1k

$1.2m

$3m

Trades

Buys

Report date: 2024-09-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
NGVC.NYSE	105k	-	2.6m	21-30	$40.30	92.7%
NIC.NYSE	46.4k	-	4.3m	80-105	$106.96	34.0%

Report date: 2024-06-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AXTI.NASDAQ	659k	-	2.3m	3-5	$2.28	-17.1%
BVS.NASDAQ	380.9k	-	2m	4-7	$11.00	182.1%
OSPN.NASDAQ	370.7k	-	4.4m	10-14	$18.96	95.9%
ULH.NASDAQ	62.2k	-	2.5m	32-51	$47.41	49.2%
USAP.NASDAQ	80.9k	-	2.3m	23-35	$44.00	92.1%
WLDN.NASDAQ	79.1k	-	2.3m	26-35	$38.76	49.6%

Report date: 2024-03-31

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AMSC.NASDAQ	634.4k	-	7.8m	9-15	$26.48	182.6%
BLZE.NASDAQ	357.8k	-	3.3m	7-13	$6.43	-6.9%
LMB.NASDAQ	164.8k	-	7.1m	35-53	$88.38	150.8%
RSI.NYSE	776.7k	-	4.1m	4-7	$13.42	276.8%

Report date: 2023-09-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AAOI.NASDAQ	468.4k	-	4.9m	6-16	$40.94	619.5%
AVPT.NASDAQ	425k	-	2.6m	6-7	$17.43	215.8%

Report date: 2023-06-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
WEAV.NYSE	394.5k	-	2.6m	4-12	$16.08	298.0%

Report date: 2023-03-31

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
CVV.NASDAQ	32.3k	-	364.5k	5-16	$3.97	-27.2%

Report date: 2022-12-31

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
KVHI.NASDAQ	88k	-	893.1k	9-12	$5.36	-38.5%
NRDS.NASDAQ	175.9k	-	1.9m	8-14	$13.35	58.0%

Sells

Report date: 2022-06-30

Trade					Current
Symbol	Shares	%	Total	Price Range	Price	%
ATRS.NASDAQ	-344.2k	-100.0	-0.00	0-0	-	-

Adds

Report date: 2024-09-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
ADMA.NASDAQ	866.3k	42.5	13.4m	10-20	$17.89	75.2%
AOSL.NASDAQ	24.7k	13.7	937.9k	32-47	$41.05	29.4%
AXTI.NASDAQ	206.7k	31.4	584.7k	2-4	$2.28	14.0%
BVS.NASDAQ	130k	34.1	1.1m	5-12	$11.00	101.1%
CLW.NYSE	63k	56.2	2.4m	28-57	$31.96	15.4%
UCTT.NASDAQ	120.5k	37.7	4.9m	32-56	$37.08	14.7%
ULH.NASDAQ	6.8k	10.9	281.3k	36-47	$47.41	31.7%

Report date: 2024-06-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AAOI.NASDAQ	16.3k	1.9	179.1k	8-15	$40.94	396.2%
AMSC.NASDAQ	30k	4.7	495.5k	11-27	$26.48	133.1%
BLZE.NASDAQ	180.9k	50.6	1.4m	5-11	$6.43	19.7%
CSTM.NYSE	35.6k	2.0	740.3k	19-23	$10.35	-45.0%
MBWM.NASDAQ	563.00	0.6	21k	33-41	$45.56	36.2%
NVTS.NASDAQ	205.8k	25.5	865.8k	3-5	$4.12	18.4%
RSI.NYSE	195.2k	25.1	1.5m	6-10	$13.42	134.9%

Report date: 2024-03-31

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AAOI.NASDAQ	381.2k	81.4	6.4m	12-25	$40.94	237.2%
ACMR.NASDAQ	99.3k	29.1	2.2m	16-34	$15.66	-0.3%
ADMA.NASDAQ	712.3k	34.3	3.8m	4-7	$17.89	309.4%
AEHR.NASDAQ	57.7k	6.3	962.3k	11-26	$16.29	54.6%
AMPH.NASDAQ	265.3k	174.0	13.7m	42-66	$38.17	-9.5%
AORT.NYSE	34.2k	13.8	636.7k	16-22	$29.34	78.0%
ATEC.NASDAQ	149.8k	12.1	2.2m	13-17	$9.33	-26.6%
AVNW.NASDAQ	74k	59.1	2.4m	29-39	$17.94	-37.6%
WEAV.NYSE	85.8k	16.4	1m	11-14	$16.08	53.1%

Report date: 2023-09-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AEHR.NASDAQ	37k	4.2	1.7m	38-54	$16.29	-57.0%
AORT.NYSE	36.9k	17.5	598k	15-18	$29.34	101.2%
ATEC.NASDAQ	255.5k	26.1	4m	12-19	$9.33	-22.8%
AVNW.NASDAQ	15.8k	14.4	499.8k	28-36	$17.94	-34.8%
CSTM.NYSE	133.8k	4.8	2.3m	16-19	$10.35	-35.4%
LYTS.NASDAQ	15k	5.3	208.9k	12-17	$19.79	68.6%
MBWM.NASDAQ	22.8k	36.3	743.6k	27-37	$45.56	69.1%
NVTS.NASDAQ	272.5k	42.6	2.4m	7-11	$4.12	-38.7%
PERI.NASDAQ	44k	10.3	1.4m	30-37	$8.37	-71.7%
TCMD.NASDAQ	35.4k	12.0	695.7k	13-26	$17.33	35.8%
WEAV.NYSE	129.1k	32.7	1.3m	8-12	$16.08	102.0%

Report date: 2023-06-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AEHR.NASDAQ	174k	24.9	5.7m	23-44	$16.29	-29.5%
BLBD.NASDAQ	174k	136.7	3.7m	17-29	$40.02	130.4%
CAMT.NASDAQ	30.5k	25.9	873.9k	25-37	$83.69	237.4%
CVV.NASDAQ	70.7k	218.9	640.1k	6-14	$3.97	-38.8%
NINE.NYSE	10.6k	4.7	41.3k	3-7	$1.04	-64.1%
OSPN.NASDAQ	55.5k	15.4	868.9k	11-19	$18.96	76.5%
PERI.NASDAQ	39k	10.1	1.3m	30-43	$8.37	-71.6%

Report date: 2023-03-31

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AEHR.NASDAQ	91.5k	15.1	2.9m	17-41	$16.29	-4.5%
ASYS.NASDAQ	5k	4.4	46.9k	8-11	$5.42	-30.6%
BELFB.NASDAQ	6.7k	5.8	241.2k	31-42	$84.41	169.6%
KVHI.NASDAQ	3k	3.4	30.6k	9-12	$5.36	-42.0%
NINE.NYSE	126.1k	127.2	1.3m	5-17	$1.04	-78.7%
OSPN.NASDAQ	144.4k	66.6	2.1m	11-19	$18.96	68.7%
PERI.NASDAQ	139.7k	56.5	4.6m	25-40	$8.37	-66.2%

Report date: 2022-12-31

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AEHR.NASDAQ	99.2k	19.5	2.1m	14-28	$16.29	18.9%
BELFB.NASDAQ	10k	9.5	326.4k	25-38	$84.41	234.3%
CLFD.NASDAQ	35.5k	60.3	3.7m	83-135	$31.58	-61.9%
DADA.NASDAQ	25.9k	6.0	135.7k	3-8	$1.37	-54.0%
PERI.NASDAQ	80.4k	48.1	1.9m	19-28	$8.37	-56.5%

Report date: 2022-09-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AEHR.NASDAQ	333k	190.0	4.4m	7-19	$16.29	142.8%
ASYS.NASDAQ	5k	4.6	45.9k	7-13	$5.42	-18.6%
BELFB.NASDAQ	23.3k	28.6	544.5k	15-30	$84.41	466.0%
CSTM.NYSE	232.2k	4.4	3m	10-15	$10.35	5.4%
PERI.NASDAQ	22.7k	15.7	456.8k	18-23	$8.37	-52.2%

Report date: 2022-06-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
DADA.NASDAQ	182.7k	50.9	1.4m	5-11	$1.37	-74.2%
FLL.NASDAQ	35.2k	18.5	273.4k	5-10	$3.95	-25.0%

Reduces

Report date: 2024-09-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
ACMR.NASDAQ	-24.6k	-5.6	-472.1k	14-26	$15.66	12.3%
LMB.NASDAQ	-54k	-32.8	-3.4m	48-82	$88.38	83.5%

Report date: 2024-06-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AEHR.NASDAQ	-433.4k	-44.8	-5m	10-14	$16.29	65.7%

Report date: 2024-03-31

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
CSTM.NYSE	-1.1m	-38.5	-21.8m	18-22	$10.35	-41.1%

Report date: 2023-06-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
CSTM.NYSE	-1.7m	-38.5	-26.9m	13-17	$10.35	-22.8%

Report date: 2023-03-31

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
CSTM.NYSE	-385.5k	-7.8	-5.6m	12-17	$10.35	-12.0%

Report date: 2022-12-31

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
CSTM.NYSE	-565.7k	-10.3	-6.6m	10-13	$10.35	2.6%

Report date: 2022-09-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
NVMI.NASDAQ	-22.6k	-4.2	-2.2m	82-111	$202.44	148.0%
RFIL.NASDAQ	-800.00	-1.3	-5.3k	5-7	$3.88	-25.0%

Report date: 2022-06-30

Trade					Current
Symbol	Shares	%	Total	$ Range	Price	%
AEHR.NASDAQ	-2.9k	-1.6	-24.2k	7-11	$16.29	137.5%
ASYS.NASDAQ	-1.8k	-1.6	-15.6k	7-10	$5.42	-22.5%
BELFB.NASDAQ	-1.4k	-1.7	-22.8k	15-19	$84.41	468.8%
CSTM.NYSE	-274.2k	-4.9	-4.4m	12-19	$10.35	-12.2%
CYBE.NASDAQ	-700.00	-1.6	-28.6k	34-49	-	-
DAVA.NYSE	-18.8k	-4.6	-1.9m	83-141	$30.54	-63.1%
DZSI.NASDAQ	-2k	-1.7	-29.4k	12-20	$0.70	-94.0%
NVMI.NASDAQ	-26.6k	-4.7	-2.6m	86-116	$202.44	134.3%
RFIL.NASDAQ	-1.1k	-1.7	-7k	5-7	$3.88	-29.2%

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