Filed: 5/15/2025ACC: 0001213900-25-043859
📋 What this filing means
OBERWEIS ASSET MANAGEMENT INC/ filed this quarterly 13F‑HR report disclosing 192 equity positions with a total reported market value of $2.01B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
192
Positions
$2.01B
Total AUM (reported)
59.02M
Total Shares
Allocation by class
COM$2.01B99.9%
ETF$1.21M0.1%
Portfolio Concentration
Top 3$160.29M8.0%
4–10$209.52M10.4%
11–25$357.93M17.8%
Rest$1.28B63.7%
Top 3 weight
8.0%
Top 10 weight
18.4%
Voting Authority Distribution
Total shares with voting rights: 59.02M
Sole
Full voting authority
57.82M
shares
% of voting shares98.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
1.20M
shares
% of voting shares2.0%
Investment Discretion (by position count)
Sole192
Shared0
Other0
Dominant voting typeSole · 98.0% of voting shares
Institutional Holdings192
Rows:
ADMA Biologics, Inc.
SOLEShares3.43M
TypeSH
Market value$67.98M
3.39%
Sole
3.37M
Shared
0.00
None
59.70K
Credo Technology Group
SOLEShares1.26M
TypeSH
Market value$50.60M
2.52%
Sole
1.23M
Shared
0.00
None
30.07K
SharkNinja, Inc.
SOLEShares500.16K
TypeSH
Market value$41.72M
2.08%
Sole
485.01K
Shared
0.00
None
15.14K
Encompass Health Corporation
SOLEShares370.72K
TypeSH
Market value$37.55M
1.87%
Sole
359.50K
Shared
0.00
None
11.22K
Doximity, Inc.
SOLEShares584.06K
TypeSH
Market value$33.89M
1.69%
Sole
584.06K
Shared
0.00
None
0.00
Ambarella, Inc.
SOLEShares568.83K
TypeSH
Market value$28.63M
1.43%
Sole
555.97K
Shared
0.00
None
12.86K
Itron Inc
SOLEShares272.51K
TypeSH
Market value$28.55M
1.42%
Sole
272.40K
Shared
0.00
None
110.00
Skywest Inc
SOLEShares319.15K
TypeSH
Market value$27.88M
1.39%
Sole
317.10K
Shared
0.00
None
2.05K
Waystar Holding Corp.
SOLEShares713.04K
TypeSH
Market value$26.64M
1.33%
Sole
708.66K
Shared
0.00
None
4.38K
Genpact Ltd.
SOLEShares523.60K
TypeSH
Market value$26.38M
1.31%
Sole
523.60K
Shared
0.00
None
0.00
Rambus, Inc
SOLEShares507.35K
TypeSH
Market value$26.27M
1.31%
Sole
507.35K
Shared
0.00
None
0.00
Stride, Inc.
SOLEShares207.30K
TypeSH
Market value$26.22M
1.31%
Sole
207.30K
Shared
0.00
None
0.00
Dorman Products, Inc.
SOLEShares208.52K
TypeSH
Market value$25.14M
1.25%
Sole
201.35K
Shared
0.00
None
7.17K
Flowserve Corporation
SOLEShares513.18K
TypeSH
Market value$25.06M
1.25%
Sole
494.20K
Shared
0.00
None
18.98K
Zeta Global Holdings Corp.
SOLEShares1.84M
TypeSH
Market value$24.99M
1.25%
Sole
1.75M
Shared
0.00
None
92.70K
Sportradar Group
SOLEShares1.14M
TypeSH
Market value$24.75M
1.23%
Sole
657.10K
Shared
0.00
None
487.60K
Freshworks, Inc.
SOLEShares1.73M
TypeSH
Market value$24.39M
1.22%
Sole
1.66M
Shared
0.00
None
64K
Life Time Holdings, Inc.
SOLEShares797K
TypeSH
Market value$24.07M
1.20%
Sole
797K
Shared
0.00
None
0.00
Macom Technology Solutions
SOLEShares232.52K
TypeSH
Market value$23.34M
1.16%
Sole
225.02K
Shared
0.00
None
7.50K
Frontdoor, Inc.
SOLEShares599.46K
TypeSH
Market value$23.03M
1.15%
Sole
596.50K
Shared
0.00
None
2.96K
Veracyte, Inc.
SOLEShares769.35K
TypeSH
Market value$22.81M
1.14%
Sole
738.84K
Shared
0.00
None
30.51K
Primo Brands Corp.
SOLEShares632.40K
TypeSH
Market value$22.44M
1.12%
Sole
632.40K
Shared
0.00
None
0.00
Merit Medical System Inc
SOLEShares208.56K
TypeSH
Market value$22.05M
1.10%
Sole
200.02K
Shared
0.00
None
8.54K
Clean Harbors, Inc.
SOLEShares110.32K
TypeSH
Market value$21.74M
1.08%
Sole
103K
Shared
0.00
None
7.32K
ICU Medical, Inc.
SOLEShares155.69K
TypeSH
Market value$21.62M
1.08%
Sole
150.11K
Shared
0.00
None
5.58K
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
ADMA Biologics, Inc.SOLE | COM | 3.43M | SH | $67.98M 3.39% | 3.37M | 0.00 | 59.70K |
Credo Technology GroupSOLE | COM | 1.26M | SH | $50.60M 2.52% | 1.23M | 0.00 | 30.07K |
SharkNinja, Inc.SOLE | COM | 500.16K | SH | $41.72M 2.08% | 485.01K | 0.00 | 15.14K |
Encompass Health CorporationSOLE | COM | 370.72K | SH | $37.55M 1.87% | 359.50K | 0.00 | 11.22K |
Doximity, Inc.SOLE | COM | 584.06K | SH | $33.89M 1.69% | 584.06K | 0.00 | 0.00 |
Ambarella, Inc.SOLE | COM | 568.83K | SH | $28.63M 1.43% | 555.97K | 0.00 | 12.86K |
Itron IncSOLE | COM | 272.51K | SH | $28.55M 1.42% | 272.40K | 0.00 | 110.00 |
Skywest IncSOLE | COM | 319.15K | SH | $27.88M 1.39% | 317.10K | 0.00 | 2.05K |
Waystar Holding Corp.SOLE | COM | 713.04K | SH | $26.64M 1.33% | 708.66K | 0.00 | 4.38K |
Genpact Ltd.SOLE | COM | 523.60K | SH | $26.38M 1.31% | 523.60K | 0.00 | 0.00 |
Rambus, IncSOLE | COM | 507.35K | SH | $26.27M 1.31% | 507.35K | 0.00 | 0.00 |
Stride, Inc.SOLE | COM | 207.30K | SH | $26.22M 1.31% | 207.30K | 0.00 | 0.00 |
Dorman Products, Inc.SOLE | COM | 208.52K | SH | $25.14M 1.25% | 201.35K | 0.00 | 7.17K |
Flowserve CorporationSOLE | COM | 513.18K | SH | $25.06M 1.25% | 494.20K | 0.00 | 18.98K |
Zeta Global Holdings Corp.SOLE | COM | 1.84M | SH | $24.99M 1.25% | 1.75M | 0.00 | 92.70K |
Sportradar GroupSOLE | COM | 1.14M | SH | $24.75M 1.23% | 657.10K | 0.00 | 487.60K |
Freshworks, Inc.SOLE | COM | 1.73M | SH | $24.39M 1.22% | 1.66M | 0.00 | 64K |
Life Time Holdings, Inc.SOLE | COM | 797K | SH | $24.07M 1.20% | 797K | 0.00 | 0.00 |
Macom Technology SolutionsSOLE | COM | 232.52K | SH | $23.34M 1.16% | 225.02K | 0.00 | 7.50K |
Frontdoor, Inc.SOLE | COM | 599.46K | SH | $23.03M 1.15% | 596.50K | 0.00 | 2.96K |
Veracyte, Inc.SOLE | COM | 769.35K | SH | $22.81M 1.14% | 738.84K | 0.00 | 30.51K |
Primo Brands Corp.SOLE | COM | 632.40K | SH | $22.44M 1.12% | 632.40K | 0.00 | 0.00 |
Merit Medical System IncSOLE | COM | 208.56K | SH | $22.05M 1.10% | 200.02K | 0.00 | 8.54K |
Clean Harbors, Inc.SOLE | COM | 110.32K | SH | $21.74M 1.08% | 103K | 0.00 | 7.32K |
ICU Medical, Inc.SOLE | COM | 155.69K | SH | $21.62M 1.08% | 150.11K | 0.00 | 5.58K |
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