Filed: 5/15/2023ACC: 0001213900-23-039430
📋 What this filing means
OBERWEIS ASSET MANAGEMENT INC/ filed this quarterly 13F‑HR report disclosing 174 equity positions with a total reported market value of $644.54M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
174
Positions
$644.54M
Total AUM (reported)
23.87M
Total Shares
Allocation by class
COM$644.54M100.0%
Portfolio Concentration
Top 3$127.51M19.8%
4–10$95.63M14.8%
11–25$93.77M14.5%
Rest$327.64M50.8%
Top 3 weight
19.8%
Top 10 weight
34.6%
Voting Authority Distribution
Total shares with voting rights: 23.87M
Sole
Full voting authority
21.58M
shares
% of voting shares90.4%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
2.29M
shares
% of voting shares9.6%
Investment Discretion (by position count)
Sole174
Shared0
Other0
Dominant voting typeSole · 90.4% of voting shares
Institutional Holdings174
Rows:
Constellium NV Cl A
SOLEShares4.55M
TypeSH
Market value$69.58M
10.80%
Sole
3.02M
Shared
0.00
None
1.54M
Axcelis Technologies
SOLEShares271.99K
TypeSH
Market value$36.24M
5.62%
Sole
239.91K
Shared
0.00
None
32.08K
Aehr Test Systems
SOLEShares699.11K
TypeSH
Market value$21.69M
3.36%
Sole
698.81K
Shared
0.00
None
300.00
Impinj, Inc.
SOLEShares146.28K
TypeSH
Market value$19.82M
3.08%
Sole
126.19K
Shared
0.00
None
20.09K
Perion Network, Ltd.
SOLEShares387.17K
TypeSH
Market value$15.32M
2.38%
Sole
358.74K
Shared
0.00
None
28.43K
Lantheus Hldgs Inc.
SOLEShares178.54K
TypeSH
Market value$14.74M
2.29%
Sole
164.02K
Shared
0.00
None
14.52K
Crocs, Inc.
SOLEShares105.35K
TypeSH
Market value$13.32M
2.07%
Sole
83.15K
Shared
0.00
None
22.20K
Deckers Outdoor Corp.
SOLEShares28.28K
TypeSH
Market value$12.71M
1.97%
Sole
21.98K
Shared
0.00
None
6.30K
Alphatec Hldgs Inc.
SOLEShares678.53K
TypeSH
Market value$10.59M
1.64%
Sole
608.16K
Shared
0.00
None
70.37K
Veritiv Corp.
SOLEShares67.49K
TypeSH
Market value$9.12M
1.42%
Sole
67.49K
Shared
0.00
None
0.00
TransMedics Group, Inc.
SOLEShares108.30K
TypeSH
Market value$8.20M
1.27%
Sole
108.30K
Shared
0.00
None
0.00
Belden, Inc.
SOLEShares92.67K
TypeSH
Market value$8.04M
1.25%
Sole
72.93K
Shared
0.00
None
19.75K
Clean Harbors, Inc.
SOLEShares50.84K
TypeSH
Market value$7.25M
1.12%
Sole
43.63K
Shared
0.00
None
7.21K
ICF International, Inc.
SOLEShares63.40K
TypeSH
Market value$6.95M
1.08%
Sole
63.40K
Shared
0.00
None
0.00
Amphastar Pharmaceuticals, Inc
SOLEShares178.20K
TypeSH
Market value$6.68M
1.04%
Sole
178.20K
Shared
0.00
None
0.00
OneSpan, Inc.
SOLEShares361.30K
TypeSH
Market value$6.32M
0.98%
Sole
361.30K
Shared
0.00
None
0.00
Halozyme Therapeutics, Inc.
SOLEShares164.04K
TypeSH
Market value$6.26M
0.97%
Sole
138.85K
Shared
0.00
None
25.19K
Ciena Corporation
SOLEShares118.31K
TypeSH
Market value$6.21M
0.96%
Sole
99.39K
Shared
0.00
None
18.91K
Visteon Corp.
SOLEShares39.40K
TypeSH
Market value$6.18M
0.96%
Sole
39.40K
Shared
0.00
None
0.00
Allegro MicroSystems, Inc.
SOLEShares123.50K
TypeSH
Market value$5.93M
0.92%
Sole
123.50K
Shared
0.00
None
0.00
Evolent Health, Inc.
SOLEShares167.71K
TypeSH
Market value$5.44M
0.84%
Sole
147.36K
Shared
0.00
None
20.35K
Axonics, Inc.
SOLEShares95.74K
TypeSH
Market value$5.22M
0.81%
Sole
80.45K
Shared
0.00
None
15.29K
Everi Hldgs, Inc.
SOLEShares301.30K
TypeSH
Market value$5.17M
0.80%
Sole
301.30K
Shared
0.00
None
0.00
SeaWorld Entertainment Inc.
SOLEShares80.80K
TypeSH
Market value$4.95M
0.77%
Sole
62.32K
Shared
0.00
None
18.48K
Maxlinear, Inc. Class A
SOLEShares140.46K
TypeSH
Market value$4.95M
0.77%
Sole
111.22K
Shared
0.00
None
29.24K
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
Constellium NV Cl ASOLE | com | 4.55M | SH | $69.58M 10.80% | 3.02M | 0.00 | 1.54M |
Axcelis TechnologiesSOLE | com | 271.99K | SH | $36.24M 5.62% | 239.91K | 0.00 | 32.08K |
Aehr Test SystemsSOLE | com | 699.11K | SH | $21.69M 3.36% | 698.81K | 0.00 | 300.00 |
Impinj, Inc.SOLE | com | 146.28K | SH | $19.82M 3.08% | 126.19K | 0.00 | 20.09K |
Perion Network, Ltd.SOLE | com | 387.17K | SH | $15.32M 2.38% | 358.74K | 0.00 | 28.43K |
Lantheus Hldgs Inc.SOLE | com | 178.54K | SH | $14.74M 2.29% | 164.02K | 0.00 | 14.52K |
Crocs, Inc.SOLE | com | 105.35K | SH | $13.32M 2.07% | 83.15K | 0.00 | 22.20K |
Deckers Outdoor Corp.SOLE | com | 28.28K | SH | $12.71M 1.97% | 21.98K | 0.00 | 6.30K |
Alphatec Hldgs Inc.SOLE | com | 678.53K | SH | $10.59M 1.64% | 608.16K | 0.00 | 70.37K |
Veritiv Corp.SOLE | com | 67.49K | SH | $9.12M 1.42% | 67.49K | 0.00 | 0.00 |
TransMedics Group, Inc.SOLE | com | 108.30K | SH | $8.20M 1.27% | 108.30K | 0.00 | 0.00 |
Belden, Inc.SOLE | com | 92.67K | SH | $8.04M 1.25% | 72.93K | 0.00 | 19.75K |
Clean Harbors, Inc.SOLE | com | 50.84K | SH | $7.25M 1.12% | 43.63K | 0.00 | 7.21K |
ICF International, Inc.SOLE | com | 63.40K | SH | $6.95M 1.08% | 63.40K | 0.00 | 0.00 |
Amphastar Pharmaceuticals, IncSOLE | com | 178.20K | SH | $6.68M 1.04% | 178.20K | 0.00 | 0.00 |
OneSpan, Inc.SOLE | com | 361.30K | SH | $6.32M 0.98% | 361.30K | 0.00 | 0.00 |
Halozyme Therapeutics, Inc.SOLE | com | 164.04K | SH | $6.26M 0.97% | 138.85K | 0.00 | 25.19K |
Ciena CorporationSOLE | com | 118.31K | SH | $6.21M 0.96% | 99.39K | 0.00 | 18.91K |
Visteon Corp.SOLE | com | 39.40K | SH | $6.18M 0.96% | 39.40K | 0.00 | 0.00 |
Allegro MicroSystems, Inc.SOLE | com | 123.50K | SH | $5.93M 0.92% | 123.50K | 0.00 | 0.00 |
Evolent Health, Inc.SOLE | com | 167.71K | SH | $5.44M 0.84% | 147.36K | 0.00 | 20.35K |
Axonics, Inc.SOLE | com | 95.74K | SH | $5.22M 0.81% | 80.45K | 0.00 | 15.29K |
Everi Hldgs, Inc.SOLE | com | 301.30K | SH | $5.17M 0.80% | 301.30K | 0.00 | 0.00 |
SeaWorld Entertainment Inc.SOLE | com | 80.80K | SH | $4.95M 0.77% | 62.32K | 0.00 | 18.48K |
Maxlinear, Inc. Class ASOLE | com | 140.46K | SH | $4.95M 0.77% | 111.22K | 0.00 | 29.24K |
Page 1 of 7
…