OBERWEIS ASSET MANAGEMENT INC/
CIK 937886 · Holdings on Sep 30, 2025 · First reported Nov 17, 2025
Top ten holdings
Q3 2025- CRDO3.59%
- LITE2.05%
- RMBS2.03%
- AMBA1.93%
- SN1.91%
- AAOI1.87%
- EHC1.75%
- FTDR1.57%
- ADMA1.52%
- AMSC1.51%
Share classes counted separately19.73%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- ADMAWeight decreased · -0.96 pp2.48% → 1.52%Shares -423.85K (-13.52%)
- LITEWeight increased · +0.94 pp1.11% → 2.05%Shares +59.58K (+22.14%)
- RMBSWeight increased · +0.62 pp1.41% → 2.03%Shares +2.12K (+0.42%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 30
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | CRDOCREDO TECHNOLOGY GROUP HOLDI View history and evidence | $93.77M | 3.59% | 643.95K shares | 3.06% → 3.59%+0.53 pp -114.62K (-15.11%) | Reduced | ↗▾ |
| 02 | LITELUMENTUM HOLDINGS INC View history and evidence | $53.47M | 2.05% | 328.63K shares | 1.11% → 2.05%+0.94 pp +59.58K (+22.14%) | Added | ↗▾ |
| 03 | RMBSRAMBUS INC View history and evidence | $52.92M | 2.03% | 507.90K shares | 1.41% → 2.03%+0.62 pp +2.12K (+0.42%) | Added | ↗▾ |
| 04 | AMBAAMBARELLA INC View history and evidence | $50.45M | 1.93% | 611.36K shares | 1.65% → 1.93%+0.28 pp +38.00K (+6.63%) | Added | ↗▾ |
| 05 | SNSHARKNINJA INC View history and evidence | $49.80M | 1.91% | 482.81K shares | 2.09% → 1.91%-0.18 pp -1.75K (-0.36%) | Reduced | ↗▾ |
| 06 | AAOIAPPLIED OPTOELECTRONICS INC View history and evidence | $48.96M | 1.87% | 1.89M shares | 2.11% → 1.87%-0.24 pp 0 (0.00%) | Unchanged | ↗▾ |
| 07 | EHCENCOMPASS HEALTH CORP View history and evidence | $45.57M | 1.75% | 358.80K shares | 1.92% → 1.75%-0.17 pp -225 (-0.06%) | Reduced | ↗▾ |
| 08 | FTDRFRONTDOOR INC View history and evidence | $41.10M | 1.57% | 610.86K shares | 1.57% → 1.57%+0.00 pp 0 (0.00%) | Unchanged | ↗▾ |
| 09 | ADMAADMA BIOLOGICS INC View history and evidence | $39.76M | 1.52% | 2.71M shares | 2.48% → 1.52%-0.96 pp -423.85K (-13.52%) | Reduced | ↗▾ |
| 10 | AMSCAMERICAN SUPERCONDUCTOR CORP View history and evidence | $39.54M | 1.51% | 665.70K shares | 1.07% → 1.51%+0.44 pp -2.50K (-0.37%) | Reduced | ↗▾ |
Options overlay 0
No options reported this quarter.
Exited positions 25
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| 62482R107 MR COOPER GROUP INC | Non-derivative | -155,800 | -$23.25M | SEC filing ↗ | SEC filing ↗ |
| PRMB PRIMO BRANDS CORP | Non-derivative | -611,300 | -$18.11M | SEC filing ↗ | SEC filing ↗ |
| GAP GAP INC/THE | Non-derivative | -790,300 | -$17.24M | SEC filing ↗ | SEC filing ↗ |
3 / 25 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 2025-09-30
Data loaded 2026-09-23 · First reported 2025-11-17
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 2611720449
}Research all 183 reported holdings.
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