OBERWEIS ASSET MANAGEMENT INC/
CIK 937886 · Holdings on Jun 30, 2026 · First reported Aug 14, 2026
Top ten holdings
Q2 2026- CRDO5.69%
- AAOI5.48%
- DOCN3.02%
- SIMO2.18%
- UCTT1.91%
- SN1.87%
- SITM1.84%
- BTSG1.71%
- HNGE1.47%
- RMBS1.45%
Share classes counted separately26.62%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- LITEWeight decreased · -4.25 pp5.53% → 1.28%Shares -194.04K (-72.89%)
- CRDOWeight increased · +2.86 pp2.83% → 5.69%Shares -8.54K (-0.84%)
- SIMOWeight increased · +1.24 pp0.94% → 2.18%Shares +33.80K (+11.96%)
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 | $275.60M | 5.69% | 1.01M shares | 2.83% → 5.69%+2.86 pp -8.54K (-0.84%) | Reduced | ▾ |
| 02 | AAOIAPPLIED OPTOELECTRONICS INC View history and evidence | $265.37M | 5.48% | 1.79M shares | 5.87% → 5.48%-0.39 pp -558.84K (-23.78%) | Reduced | ▾ |
| 03 | DOCNDIGITALOCEAN HOLDINGS INC View history and evidence | $146.04M | 3.02% | 930.00K shares | 2.35% → 3.02%+0.67 pp +2.50K (+0.27%) | Added | ▾ |
| 04 | SIMOSILICON MOTION TECHNOL-ADR View history and evidence | $105.45M | 2.18% | 316.35K shares | 0.94% → 2.18%+1.24 pp +33.80K (+11.96%) | Added | ▾ |
| 05 | UCTTULTRA CLEAN HOLDINGS INC View history and evidence | $92.30M | 1.91% | 647.28K shares | 1.18% → 1.91%+0.73 pp +6.80K (+1.06%) | Added | ▾ |
| 06 | SNSHARKNINJA INC View history and evidence | $90.37M | 1.87% | 593.50K shares | 1.88% → 1.87%-0.01 pp -6.47K (-1.08%) | Reduced | ▾ |
| 07 | SITMSITIME CORP View history and evidence | $89.10M | 1.84% | 119.50K shares | 1.22% → 1.84%+0.62 pp +220 (+0.18%) | Added | ▾ |
| 08 | BTSGBRIGHTSPRING HEALTH SERVICES View history and evidence | $82.66M | 1.71% | 1.19M shares | 1.46% → 1.71%+0.25 pp +26.31K (+2.27%) | Added | ▾ |
| 09 | HNGEHINGE HEALTH INC-A View history and evidence | $71.00M | 1.47% | 855.48K shares | 0.53% → 1.47%+0.94 pp +389.71K (+83.67%) | Added | ▾ |
| 10 | RMBSRAMBUS INC View history and evidence | $69.96M | 1.45% | 527.02K shares | 1.34% → 1.45%+0.11 pp +700 (+0.13%) | Added | ▾ |
Options overlay 0
No options reported this quarter.
Exited positions 27
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| FLS FLOWSERVE CORP | Non-derivative | -434,681 | -$31.95M | SEC filing ↗ | SEC filing ↗ |
| PRIM PRIMORIS SERVICES CORP | Non-derivative | -166,100 | -$23.76M | SEC filing ↗ | SEC filing ↗ |
| G GENPACT LTD | Non-derivative | -606,832 | -$22.60M | SEC filing ↗ | SEC filing ↗ |
3 / 27 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 2026-06-30
Data loaded 2026-09-23 · First reported 2026-08-14
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 4839542355
}Research all 176 reported holdings.
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