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Super Investors OBERWEIS ASSET MANAGEMENT INC/
OA

OBERWEIS ASSET MANAGEMENT INC/

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$4.84B
Positions
176
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (53 quarters reported)

$4.84B $181M
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q2 26

$353M in Q2 2013 → $4.84B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
CT Credo Technology Group 5.7% Trimmed 0.8% 1,013,428 $276M
Applied Optoelectronics Inc. 5.5% Trimmed 24% 1,791,127 $265M
Digitalocean Holdings, Inc. 3.0% Added 0.3% 930,005 $146M
SM Silicon Motion Techn ADR 2.2% Added 12% 316,350 $105M
Ultra Clean Holdings 1.9% Added 1.1% 647,276 $92.3M
Sharkninja, Inc. 1.9% Trimmed 1.1% 593,500 $90.4M
Sitime Corporation 1.8% Added 0.2% 119,501 $89.1M
Brightspring Health Services 1.7% Added 2.3% 1,185,280 $82.7M
Hinge Health, Inc. 1.5% Added 84% 855,476 $71M
Rambus, Inc 1.4% Added 0.1% 527,016 $70M
MT Macom Technology Solutions 1.4% Trimmed 17% 179,356 $68.2M
LH Lumentum Hldgs, Inc. 1.3% Trimmed 73% 72,185 $61.9M
LS Lattice Semiconductor Corporat 1.2% Added 4.6% 391,816 $59.9M
Nova Ltd. 1.2% Trimmed 21% 108,675 $59M
Carpenter Technology Corp. 1.2% Trimmed 1.2% 93,273 $57.5M
Frontdoor, Inc. 1.2% Added 0.2% 719,060 $55.8M
Everus Construction Group 1.1% Added 0.5% 328,183 $54.5M
Veracyte, Inc. 1.1% Added 4.5% 877,734 $51.5M
Powell Industries Inc. 1.1% Added 426% 179,521 $51.4M
LT Life Time Holdings, Inc. 1.0% Added 2.5% 1,189,620 $48.6M
Rush Street Interactive, Inc. 1.0% Added 13% 1,627,930 $48.4M
Mercury Systems, Inc. 1.0% Added 0.4% 392,723 $48M
Dutch Bros., Inc. 1.0% Added 9.6% 656,093 $47.1M
Clean Harbors, Inc. 0.9% Added 6.3% 153,475 $45.9M
SE Solaris Energy Infrastructur 0.9% Added 6.1% 564,581 $45.4M
Diodes, Inc. 0.9% Added 84% 413,750 $45.3M
Arcosa, Inc. 0.9% Added 10% 295,450 $42.9M
Blue Bird Corporation 0.9% Added 36% 529,838 $41.8M
Camtek, Ltd. 0.9% Added 14% 253,380 $41.3M
Livanova PLC 0.8% Added 55% 500,150 $41.1M
American Superconductor 0.8% Added 16% 987,500 $41M
MC Maxlinear, Inc. Class A 0.8% New 319,500 $40.9M
GM Globus Medical, Inc.-a 0.8% Added 31% 512,100 $40.5M
Novanta, Inc. 0.8% New 244,260 $39.6M
Skywest Inc 0.8% Trimmed 2.2% 383,799 $38.1M
Viavi Solutions, Inc. 0.8% Added 34% 793,600 $37.9M
M- Moog Inc. - A 0.8% Added 93% 86,735 $36.8M
Littelfuse, Inc. 0.8% Added 11% 79,800 $36.3M
Arcutis Biotherapeutics, Inc. 0.7% Added 0.5% 1,372,941 $36M
FH Firstcash Holdings, Inc 0.7% Added 0.3% 166,105 $35.9M
Billiontoone, Inc. 0.7% New 299,030 $35.9M
Dana Inc. 0.7% Trimmed 18% 1,318,300 $35.9M
Element Solutions, Inc. 0.7% New 740,100 $35.3M
Aar Corp. 0.7% Added 0.5% 246,325 $35.2M
Remitly Global, Inc. 0.7% Added 8.0% 1,570,400 $35.2M
Icu Medical, Inc. 0.7% Added 16% 237,050 $34.8M
Federal Signal Corp. 0.7% Added 0.5% 269,084 $34.6M
Ouster, Inc. 0.7% New 545,810 $34.1M
Levi Strauss & Co. 0.7% Added 16% 1,358,100 $33.7M
MM Merit Medical System Inc 0.7% Added 12% 473,409 $32.8M
Assurant, Inc. 0.7% Added 19% 122,100 $32.8M
Waystar Holding Corp. 0.7% Added 36% 1,589,364 $32.6M
Ceco Environmental Corp. 0.7% Added 165% 358,072 $32.5M
Liquidia Corp. 0.7% Added 9.2% 406,400 $32.4M
Encompass Health Corporation 0.7% Added 9.5% 316,886 $32M
IP Indivior PLC 0.7% Added 19% 779,188 $32M
Cognex Corp. 0.6% New 427,820 $31M
Granite Construction 0.6% New 193,090 $30.5M
Pdf Solutions, Inc. 0.6% New 426,400 $30.2M
Envista Holdings Corp. 0.6% Added 68% 1,120,782 $29.5M

Showing top 60 of 176 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
LH Lumentum Hldgs, Inc. Trimmed −194,037 −$166M 1.3%
Applied Optoelectronics Inc. Trimmed −558,842 −$82.8M 5.5%
Powell Industries Inc. Added +145,364 +$41.6M 1.1%
MC Maxlinear, Inc. Class A New +319,500 +$40.9M 0.8%
Novanta, Inc. New +244,260 +$39.6M 0.8%
Billiontoone, Inc. New +299,030 +$35.9M 0.7%
Element Solutions, Inc. New +740,100 +$35.3M 0.7%
Ouster, Inc. New +545,810 +$34.1M 0.7%
Hinge Health, Inc. Added +389,710 +$32.3M 1.5%
Flowserve Corporation Exited −434,681 −$32M —

Showing the 10 largest of 190 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 15, 2026

Company Action Shares changed Value of change % of portfolio
CT Credo Technology Group Added +346,580 +$32.5M 2.8%
Dana Inc. Added +815,000 +$27.4M 1.6%
Applied Optoelectronics Inc. Added +310,328 +$26.3M 5.9%
Leonardo Drs, Inc. New +449,500 +$20M 0.6%
IP Indivior PLC New +653,413 +$19.9M 0.6%
Cargurus, Inc. Exited −518,400 −$19.9M —
Chime Financial Inc. New +1,035,530 +$19.4M 0.6%
Hinge Health, Inc. New +465,766 +$18M 0.5%
Sensient Technologies Corp. Exited −188,000 −$17.7M —
Genius Sports Ltd. Exited −1,585,900 −$17.5M —

Showing the 10 largest of 191 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 17, 2026

Company Action Shares changed Value of change % of portfolio
Adma Biologics, Inc. Exited −2,712,040 −$39.8M —
SG Sportradar Group Exited −1,379,100 −$37.1M —
Itron Inc Exited −284,150 −$35.4M —
Stride, Inc. Exited −181,800 −$27.1M —
Qorvo, Inc. Exited −260,900 −$23.8M —
GM Globus Medical, Inc.-a New +270,000 +$23.6M 0.9%
Arcutis Biotherapeutics, Inc. New +808,400 +$23.5M 0.9%
Parsons Corp. Exited −272,730 −$22.6M —
Dana Inc. New +796,500 +$18.9M 0.7%
LH Lumentum Hldgs, Inc. Trimmed −47,700 −$17.6M 3.8%

Showing the 10 largest of 170 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 17, 2025

Company Action Shares changed Value of change % of portfolio
MC Mr. Cooper Group Inc. Exited −155,800 −$23.2M —
Levi Strauss & Co. New +903,500 +$21.1M 0.8%
LS Lattice Semiconductor Corporat New +275,536 +$20.2M 0.8%
Impinj, Inc. New +107,120 +$19.4M 0.7%
Primo Brands Corp. Exited −611,300 −$18.1M —
The Gap,inc. Exited −790,300 −$17.2M —
CT Credo Technology Group Trimmed −114,620 −$16.7M 3.6%
Littelfuse, Inc. New +62,300 +$16.1M 0.6%
Bellring Brands, Inc. Exited −264,200 −$15.3M —
Fabrinet Trimmed −40,300 −$14.7M 0.6%

Showing the 10 largest of 131 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
CT Credo Technology Group Trimmed −501,347 −$46.4M 3.1%
Doximity, Inc. Exited −584,060 −$33.9M —
LH Lumentum Hldgs, Inc. New +269,050 +$25.6M 1.1%
Dorman Products, Inc. Exited −208,520 −$25.1M —
Deckers Outdoor Corp. Exited −169,870 −$19M —
Brightspring Health Services New +775,800 +$18.3M 0.8%
Qorvo, Inc. New +200,300 +$17M 0.7%
Century Communities, Inc. Exited −248,000 −$16.6M —
Clear Secure, Inc. Exited −609,400 −$15.8M —
Onto Innovation, Inc. Exited −129,175 −$15.7M —

Showing the 10 largest of 168 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 15, 2025

Company Action Shares changed Value of change % of portfolio
LT Life Time Holdings, Inc. New +797,000 +$24.1M 1.2%
Abercrombie & Fitch Co. Exited −147,300 −$22M —
Hims & Hers Health, Inc. Exited −843,600 −$20.4M —
Weatherford International PLC Exited −275,888 −$19.8M —
Ambarella, Inc. Added +386,025 +$19.4M 1.4%
Tandem Diabetes Care, Inc. Exited −506,600 −$18.2M —
Waystar Holding Corp. Added +481,740 +$18M 1.3%
Mercury Systems, Inc. New +412,300 +$17.8M 0.9%
Haemonetics Corp. Exited −224,920 −$17.6M —
E.l.f. Beauty, Inc. Exited −137,700 −$17.3M —

Showing the 10 largest of 138 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 14, 2025

Company Action Shares changed Value of change % of portfolio
Transmedics Group, Inc. Exited −168,690 −$26.5M —
Dorman Products, Inc. New +179,720 +$23.3M 1.1%
Crocs, Inc. Exited −152,900 −$22.1M —
Rambus, Inc New +409,400 +$21.6M 1.0%
LH Lantheus Hldgs Inc. Exited −191,400 −$21M —
Arcosa, Inc. New +203,000 +$19.6M 0.9%
Cargurus, Inc. New +500,000 +$18.3M 0.9%
The Gap,inc. New +726,500 +$17.2M 0.8%
Tidewater Inc Exited −211,505 −$15.2M —
Omnicell, Inc. New +333,200 +$14.8M 0.7%

Showing the 10 largest of 211 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 14, 2024

Company Action Shares changed Value of change % of portfolio
CN Constellium Nv Cl A Exited −1,838,871 −$34.7M —
Icu Medical, Inc. New +130,500 +$23.8M 1.2%
LH Lantheus Hldgs Inc. New +191,400 +$21M 1.1%
Doximity, Inc. New +463,100 +$20.2M 1.0%
Genpact Ltd. New +442,400 +$17.3M 0.9%
Adma Biologics, Inc. Added +866,380 +$17.3M 3.0%
Box, Inc. New +522,000 +$17.1M 0.9%
DO Digital Ocean Holdings, Inc. New +422,200 +$17.1M 0.9%
MT Macom Technology Solutions New +153,100 +$17M 0.9%
LH Liveramp Hldgs, Inc. Exited −512,630 −$15.9M —

Showing the 10 largest of 171 changes.

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