OBERWEIS ASSET MANAGEMENT INC/
CIK 937886 · Holdings on Sep 30, 2023 · First reported Nov 14, 2023
Top ten holdings
Q3 2023- CSTM5.67%
- AEHR4.42%
- ACLS3.35%
- WFRD1.89%
- ATEC1.70%
- PERI1.53%
- VRT1.51%
- VCYT1.42%
- DECK1.40%
- LNTH1.25%
Share classes counted separately24.14%
Portfolio value by quarter
Top 10 holdings 30
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | CSTMCONSTELLIUM SEcom View history and evidence | $53.38M | 5.67% | 2.93M shares | — | ↗▾ | |
| 02 | AEHRAEHR TEST SYSTEMScom View history and evidence | $41.59M | 4.42% | 910.11K shares | — | ↗▾ | |
| 03 | ACLSAXCELIS TECHNOLOGIES INCcom View history and evidence | $31.56M | 3.35% | 193.56K shares | — | ↗▾ | |
| 04 | WFRDWEATHERFORD INTERNATIONAL PLcom View history and evidence | $17.79M | 1.89% | 196.92K shares | — | ↗▾ | |
| 05 | ATECALPHATEC HOLDINGS INCcom View history and evidence | $16.03M | 1.70% | 1.24M shares | — | ↗▾ | |
| 06 | PERIPERION NETWORK LTDcom View history and evidence | $14.40M | 1.53% | 470.29K shares | — | ↗▾ | |
| 07 | VRTVERTIV HOLDINGS CO-Acom View history and evidence | $14.17M | 1.51% | 380.99K shares | — | ↗▾ | |
| 08 | VCYTVERACYTE INCcom View history and evidence | $13.34M | 1.42% | 597.54K shares | — | ↗▾ | |
| 09 | DECKDECKERS OUTDOOR CORPcom View history and evidence | $13.21M | 1.40% | 25.70K shares | — | ↗▾ | |
| 10 | LNTHLANTHEUS HOLDINGS INCcom View history and evidence | $11.77M | 1.25% | 169.34K shares | — | ↗▾ |
Options overlay 0
No options reported this quarter.
Exited positions 35
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| VRTV VERITIV CORP | Non-derivative | — | — | SEC filing ↗ | |
| OSPN ONESPAN INC | Non-derivative | — | — | SEC filing ↗ | |
| HLIT HARMONIC INC | Non-derivative | — | — | SEC filing ↗ |
3 / 35 preview exits. Up to 30 exit records are previewed. Exit means absent from the current filing; execution date, price and proceeds are unknown.
Every number has a source.
CIK 937886 · Period 2023-09-30
Data loaded 2026-09-23 · First reported 2023-11-14
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 941461591
}Research all 195 reported holdings.
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