Filed: 2/17/2026ACC: 0001213900-26-017101
📋 What this filing means
OBERWEIS ASSET MANAGEMENT INC/ filed this quarterly 13F‑HR report disclosing 179 equity positions with a total reported market value of $2.73B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
179
Positions
$2.73B
Total AUM (reported)
62.89M
Total Shares
Allocation by class
COM$2.73B99.9%
ETF$1.67M0.1%
PFD$272.7K0.0%
Portfolio Concentration
Top 3$271.83M9.9%
4–10$296.66M10.8%
11–25$440.56M16.1%
Rest$1.73B63.1%
Top 3 weight
9.9%
Top 10 weight
20.8%
Voting Authority Distribution
Total shares with voting rights: 62.89M
Sole
Full voting authority
62.17M
shares
% of voting shares98.9%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
721.58K
shares
% of voting shares1.1%
Investment Discretion (by position count)
Sole179
Shared0
Other0
Dominant voting typeSole · 98.9% of voting shares
Institutional Holdings179
Rows:
Lumentum Hldgs, Inc.
SOLEShares280.93K
TypeSH
Market value$103.55M
3.79%
Sole
270.84K
Shared
0.00
None
10.09K
Credo Technology Group
SOLEShares675.39K
TypeSH
Market value$97.18M
3.55%
Sole
653.11K
Shared
0.00
None
22.28K
Applied Optoelectronics Inc.
SOLEShares2.04M
TypeSH
Market value$71.10M
2.60%
Sole
2.04M
Shared
0.00
None
0.00
SharkNinja, Inc.
SOLEShares526.31K
TypeSH
Market value$58.89M
2.15%
Sole
511.01K
Shared
0.00
None
15.29K
Ambarella, Inc.
SOLEShares617.86K
TypeSH
Market value$43.77M
1.60%
Sole
601.57K
Shared
0.00
None
16.29K
Rambus, Inc
SOLEShares462.10K
TypeSH
Market value$42.46M
1.55%
Sole
448.19K
Shared
0.00
None
13.91K
Skywest Inc
SOLEShares382.22K
TypeSH
Market value$38.38M
1.40%
Sole
373.52K
Shared
0.00
None
8.70K
Encompass Health Corporation
SOLEShares358.97K
TypeSH
Market value$38.10M
1.39%
Sole
347.62K
Shared
0.00
None
11.35K
SiTime Corporation
SOLEShares106.40K
TypeSH
Market value$37.58M
1.37%
Sole
106.40K
Shared
0.00
None
0.00
Digital Ocean Holdings, Inc.
SOLEShares778.83K
TypeSH
Market value$37.48M
1.37%
Sole
746.93K
Shared
0.00
None
31.90K
Nova Ltd.
SOLEShares113.28K
TypeSH
Market value$37.20M
1.36%
Sole
113.10K
Shared
0.00
None
185.00
Frontdoor, Inc.
SOLEShares610.86K
TypeSH
Market value$35.24M
1.29%
Sole
607.90K
Shared
0.00
None
2.96K
BrightSpring Health Services
SOLEShares908K
TypeSH
Market value$34.00M
1.24%
Sole
908K
Shared
0.00
None
0.00
Macom Technology Solutions
SOLEShares178.96K
TypeSH
Market value$30.65M
1.12%
Sole
170.92K
Shared
0.00
None
8.04K
Veracyte, Inc.
SOLEShares726.74K
TypeSH
Market value$30.60M
1.12%
Sole
722.44K
Shared
0.00
None
4.30K
Mercury Systems, Inc.
SOLEShares414.04K
TypeSH
Market value$30.23M
1.11%
Sole
400.10K
Shared
0.00
None
13.94K
Flowserve Corporation
SOLEShares409.94K
TypeSH
Market value$28.44M
1.04%
Sole
391.21K
Shared
0.00
None
18.73K
Life Time Holdings, Inc.
SOLEShares1.06M
TypeSH
Market value$28.16M
1.03%
Sole
1.06M
Shared
0.00
None
0.00
Waystar Holding Corp.
SOLEShares840.60K
TypeSH
Market value$27.53M
1.01%
Sole
819.59K
Shared
0.00
None
21.01K
Rush Street Interactive, Inc.
SOLEShares1.41M
TypeSH
Market value$27.43M
1.00%
Sole
1.35M
Shared
0.00
None
62.70K
Clean Harbors, Inc.
SOLEShares116.87K
TypeSH
Market value$27.40M
1.00%
Sole
109.54K
Shared
0.00
None
7.33K
Carpenter Technology Corp.
SOLEShares82.61K
TypeSH
Market value$26.01M
0.95%
Sole
82.61K
Shared
0.00
None
0.00
Tutor Perini Corp.
SOLEShares387.20K
TypeSH
Market value$25.95M
0.95%
Sole
387.20K
Shared
0.00
None
0.00
Osi Systems, Inc.
SOLEShares101.40K
TypeSH
Market value$25.86M
0.95%
Sole
101.40K
Shared
0.00
None
0.00
Genedx Holdings Corp.
SOLEShares198.77K
TypeSH
Market value$25.85M
0.95%
Sole
198.62K
Shared
0.00
None
150.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
Lumentum Hldgs, Inc.SOLE | COM | 280.93K | SH | $103.55M 3.79% | 270.84K | 0.00 | 10.09K |
Credo Technology GroupSOLE | COM | 675.39K | SH | $97.18M 3.55% | 653.11K | 0.00 | 22.28K |
Applied Optoelectronics Inc.SOLE | COM | 2.04M | SH | $71.10M 2.60% | 2.04M | 0.00 | 0.00 |
SharkNinja, Inc.SOLE | COM | 526.31K | SH | $58.89M 2.15% | 511.01K | 0.00 | 15.29K |
Ambarella, Inc.SOLE | COM | 617.86K | SH | $43.77M 1.60% | 601.57K | 0.00 | 16.29K |
Rambus, IncSOLE | COM | 462.10K | SH | $42.46M 1.55% | 448.19K | 0.00 | 13.91K |
Skywest IncSOLE | COM | 382.22K | SH | $38.38M 1.40% | 373.52K | 0.00 | 8.70K |
Encompass Health CorporationSOLE | COM | 358.97K | SH | $38.10M 1.39% | 347.62K | 0.00 | 11.35K |
SiTime CorporationSOLE | COM | 106.40K | SH | $37.58M 1.37% | 106.40K | 0.00 | 0.00 |
Digital Ocean Holdings, Inc.SOLE | COM | 778.83K | SH | $37.48M 1.37% | 746.93K | 0.00 | 31.90K |
Nova Ltd.SOLE | COM | 113.28K | SH | $37.20M 1.36% | 113.10K | 0.00 | 185.00 |
Frontdoor, Inc.SOLE | COM | 610.86K | SH | $35.24M 1.29% | 607.90K | 0.00 | 2.96K |
BrightSpring Health ServicesSOLE | COM | 908K | SH | $34.00M 1.24% | 908K | 0.00 | 0.00 |
Macom Technology SolutionsSOLE | COM | 178.96K | SH | $30.65M 1.12% | 170.92K | 0.00 | 8.04K |
Veracyte, Inc.SOLE | COM | 726.74K | SH | $30.60M 1.12% | 722.44K | 0.00 | 4.30K |
Mercury Systems, Inc.SOLE | COM | 414.04K | SH | $30.23M 1.11% | 400.10K | 0.00 | 13.94K |
Flowserve CorporationSOLE | COM | 409.94K | SH | $28.44M 1.04% | 391.21K | 0.00 | 18.73K |
Life Time Holdings, Inc.SOLE | COM | 1.06M | SH | $28.16M 1.03% | 1.06M | 0.00 | 0.00 |
Waystar Holding Corp.SOLE | COM | 840.60K | SH | $27.53M 1.01% | 819.59K | 0.00 | 21.01K |
Rush Street Interactive, Inc.SOLE | COM | 1.41M | SH | $27.43M 1.00% | 1.35M | 0.00 | 62.70K |
Clean Harbors, Inc.SOLE | COM | 116.87K | SH | $27.40M 1.00% | 109.54K | 0.00 | 7.33K |
Carpenter Technology Corp.SOLE | COM | 82.61K | SH | $26.01M 0.95% | 82.61K | 0.00 | 0.00 |
Tutor Perini Corp.SOLE | COM | 387.20K | SH | $25.95M 0.95% | 387.20K | 0.00 | 0.00 |
Osi Systems, Inc.SOLE | COM | 101.40K | SH | $25.86M 0.95% | 101.40K | 0.00 | 0.00 |
Genedx Holdings Corp.SOLE | COM | 198.77K | SH | $25.85M 0.95% | 198.62K | 0.00 | 150.00 |
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