Filed: 8/14/2023ACC: 0001213900-23-066668
📋 What this filing means
OBERWEIS ASSET MANAGEMENT INC/ filed this quarterly 13F‑HR report disclosing 187 equity positions with a total reported market value of $822.84M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
187
Positions
$822.84M
Total AUM (reported)
28.86M
Total Shares
Allocation by class
COM$822.84M100.0%
Portfolio Concentration
Top 3$128.24M15.6%
4–10$97.05M11.8%
11–25$121.29M14.7%
Rest$476.26M57.9%
Top 3 weight
15.6%
Top 10 weight
27.4%
Voting Authority Distribution
Total shares with voting rights: 28.86M
Sole
Full voting authority
27.11M
shares
% of voting shares94.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
1.75M
shares
% of voting shares6.0%
Investment Discretion (by position count)
Sole187
Shared0
Other0
Dominant voting typeSole · 94.0% of voting shares
Institutional Holdings187
Rows:
Constellium NV Cl A
SOLEShares2.80M
TypeSH
Market value$48.15M
5.85%
Sole
1.87M
Shared
0.00
None
929.83K
Axcelis Technologies
SOLEShares240.40K
TypeSH
Market value$44.07M
5.36%
Sole
208.64K
Shared
0.00
None
31.76K
Aehr Test Systems
SOLEShares873.11K
TypeSH
Market value$36.02M
4.38%
Sole
872.81K
Shared
0.00
None
300.00
Alphatec Hldgs Inc.
SOLEShares980.47K
TypeSH
Market value$17.63M
2.14%
Sole
864.06K
Shared
0.00
None
116.41K
Impinj, Inc.
SOLEShares179.15K
TypeSH
Market value$16.06M
1.95%
Sole
159.12K
Shared
0.00
None
20.02K
Lantheus Hldgs Inc.
SOLEShares166.18K
TypeSH
Market value$13.95M
1.69%
Sole
151.82K
Shared
0.00
None
14.36K
Perion Network, Ltd.
SOLEShares426.25K
TypeSH
Market value$13.07M
1.59%
Sole
397.06K
Shared
0.00
None
29.19K
Veracyte, Inc.
SOLEShares482.31K
TypeSH
Market value$12.28M
1.49%
Sole
454.27K
Shared
0.00
None
28.04K
Deckers Outdoor Corp.
SOLEShares23.12K
TypeSH
Market value$12.20M
1.48%
Sole
17.58K
Shared
0.00
None
5.54K
Crocs, Inc.
SOLEShares105.50K
TypeSH
Market value$11.86M
1.44%
Sole
83.40K
Shared
0.00
None
22.10K
TransMedics Group, Inc.
SOLEShares127K
TypeSH
Market value$10.67M
1.30%
Sole
127K
Shared
0.00
None
0.00
ICF International, Inc.
SOLEShares80.20K
TypeSH
Market value$9.98M
1.21%
Sole
80.20K
Shared
0.00
None
0.00
Belden, Inc.
SOLEShares98.75K
TypeSH
Market value$9.45M
1.15%
Sole
78.93K
Shared
0.00
None
19.83K
Veritiv Corp.
SOLEShares72.79K
TypeSH
Market value$9.14M
1.11%
Sole
72.79K
Shared
0.00
None
0.00
Allegro MicroSystems, Inc.
SOLEShares196.04K
TypeSH
Market value$8.85M
1.08%
Sole
177.52K
Shared
0.00
None
18.52K
Extreme Networks, Inc.
SOLEShares337.90K
TypeSH
Market value$8.80M
1.07%
Sole
297.60K
Shared
0.00
None
40.30K
Amphastar Pharmaceuticals, Inc
SOLEShares147.80K
TypeSH
Market value$8.49M
1.03%
Sole
147.80K
Shared
0.00
None
0.00
Clean Harbors, Inc.
SOLEShares45.10K
TypeSH
Market value$7.42M
0.90%
Sole
37.98K
Shared
0.00
None
7.13K
Tactile Sys Technology, Inc.
SOLEShares294.95K
TypeSH
Market value$7.35M
0.89%
Sole
294.95K
Shared
0.00
None
0.00
Bel Fuse, Inc.
SOLEShares121.50K
TypeSH
Market value$6.98M
0.85%
Sole
121.50K
Shared
0.00
None
0.00
Evolent Health, Inc.
SOLEShares227.91K
TypeSH
Market value$6.91M
0.84%
Sole
206.36K
Shared
0.00
None
21.55K
Model N, Inc.
SOLEShares194.82K
TypeSH
Market value$6.89M
0.84%
Sole
169.93K
Shared
0.00
None
24.89K
Visteon Corp.
SOLEShares47.76K
TypeSH
Market value$6.86M
0.83%
Sole
47.76K
Shared
0.00
None
0.00
Blue Bird Corporation
SOLEShares301.30K
TypeSH
Market value$6.77M
0.82%
Sole
301.30K
Shared
0.00
None
0.00
Navitas Semiconductor Corp.
SOLEShares640K
TypeSH
Market value$6.75M
0.82%
Sole
640K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
Constellium NV Cl ASOLE | com | 2.80M | SH | $48.15M 5.85% | 1.87M | 0.00 | 929.83K |
Axcelis TechnologiesSOLE | com | 240.40K | SH | $44.07M 5.36% | 208.64K | 0.00 | 31.76K |
Aehr Test SystemsSOLE | com | 873.11K | SH | $36.02M 4.38% | 872.81K | 0.00 | 300.00 |
Alphatec Hldgs Inc.SOLE | com | 980.47K | SH | $17.63M 2.14% | 864.06K | 0.00 | 116.41K |
Impinj, Inc.SOLE | com | 179.15K | SH | $16.06M 1.95% | 159.12K | 0.00 | 20.02K |
Lantheus Hldgs Inc.SOLE | com | 166.18K | SH | $13.95M 1.69% | 151.82K | 0.00 | 14.36K |
Perion Network, Ltd.SOLE | com | 426.25K | SH | $13.07M 1.59% | 397.06K | 0.00 | 29.19K |
Veracyte, Inc.SOLE | com | 482.31K | SH | $12.28M 1.49% | 454.27K | 0.00 | 28.04K |
Deckers Outdoor Corp.SOLE | com | 23.12K | SH | $12.20M 1.48% | 17.58K | 0.00 | 5.54K |
Crocs, Inc.SOLE | com | 105.50K | SH | $11.86M 1.44% | 83.40K | 0.00 | 22.10K |
TransMedics Group, Inc.SOLE | com | 127K | SH | $10.67M 1.30% | 127K | 0.00 | 0.00 |
ICF International, Inc.SOLE | com | 80.20K | SH | $9.98M 1.21% | 80.20K | 0.00 | 0.00 |
Belden, Inc.SOLE | com | 98.75K | SH | $9.45M 1.15% | 78.93K | 0.00 | 19.83K |
Veritiv Corp.SOLE | com | 72.79K | SH | $9.14M 1.11% | 72.79K | 0.00 | 0.00 |
Allegro MicroSystems, Inc.SOLE | com | 196.04K | SH | $8.85M 1.08% | 177.52K | 0.00 | 18.52K |
Extreme Networks, Inc.SOLE | com | 337.90K | SH | $8.80M 1.07% | 297.60K | 0.00 | 40.30K |
Amphastar Pharmaceuticals, IncSOLE | com | 147.80K | SH | $8.49M 1.03% | 147.80K | 0.00 | 0.00 |
Clean Harbors, Inc.SOLE | com | 45.10K | SH | $7.42M 0.90% | 37.98K | 0.00 | 7.13K |
Tactile Sys Technology, Inc.SOLE | com | 294.95K | SH | $7.35M 0.89% | 294.95K | 0.00 | 0.00 |
Bel Fuse, Inc.SOLE | com | 121.50K | SH | $6.98M 0.85% | 121.50K | 0.00 | 0.00 |
Evolent Health, Inc.SOLE | com | 227.91K | SH | $6.91M 0.84% | 206.36K | 0.00 | 21.55K |
Model N, Inc.SOLE | com | 194.82K | SH | $6.89M 0.84% | 169.93K | 0.00 | 24.89K |
Visteon Corp.SOLE | com | 47.76K | SH | $6.86M 0.83% | 47.76K | 0.00 | 0.00 |
Blue Bird CorporationSOLE | com | 301.30K | SH | $6.77M 0.82% | 301.30K | 0.00 | 0.00 |
Navitas Semiconductor Corp.SOLE | com | 640K | SH | $6.75M 0.82% | 640K | 0.00 | 0.00 |
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