Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in AEHR held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 2.7M | $255.5M | +16.3% | 8.456% | 0.00% |
| 2 | JANE STREET GROUP, LLC | 2.3M | $216.2M | +289.8% | 7.154% | 0.02% |
| 3 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 2.0M | $193.0M | +37.9% | 6.389% | 0.02% |
| 4 | CITADEL ADVISORS LLC | 1.8M | $170.6M | +160.4% | 5.647% | 0.01% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.3M | $126.8M | +3.0% | 4.198% | 0.00% |
| 6 | D. E. Shaw & Co., Inc. | 1.3M | $125.0M | +207.2% | 4.138% | 0.06% |
| 7 | TWO SIGMA INVESTMENTS, LP | 1.2M | $113.5M | +451.0% | 3.755% | 0.08% |
| 8 | FMR LLC | 1.0M | $96.7M | -53.0% | 3.201% | 0.00% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 967K | $92.9M | +5.3% | 3.073% | 0.00% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 876K | $84.1M | +20.6% | 2.784% | 0.00% |
| 11 | GOLDMAN SACHS GROUP INC | 810K | $77.8M | -35.8% | 2.575% | 0.01% |
| 12 | JPMORGAN CHASE & CO | 733K | $69.6M | +284.9% | 2.329% | 0.00% |
| 13 | STATE STREET CORP | 713K | $68.5M | +14.4% | 2.267% | 0.00% |
| 14 | Connor, Clark & Lunn Investment Management Ltd. | 671K | $64.4M | +206.6% | 2.133% | 0.12% |
| 15 | GRATIA CAPITAL, LLC | 576K | $55.3M | -23.1% | 1.830% | 33.43% |
| 16 | Caption Management, LLC | 489K | $47.0M | +42.3% | 1.555% | 0.22% |
| 17 | MORGAN STANLEY | 480K | $46.1M | +190.0% | 1.527% | 0.00% |
| 18 | NEXT CENTURY GROWTH INVESTORS LLC | 411K | $39.5M | -45.6% | 1.306% | 2.09% |
| 19 | MARSHALL WACE, LLP | 383K | $36.8M | +3648.3% | 1.217% | 0.03% |
| 20 | AWM Investment Company, Inc. | 375K | $36.0M | -76.5% | 1.192% | 3.12% |
| 21 | UBS Group AG | 349K | $33.5M | +13.8% | 1.110% | 0.00% |
| 22 | Invesco Ltd. | 296K | $28.5M | +3.7% | 0.942% | 0.00% |
| 23 | NORTHERN TRUST CORP | 277K | $26.6M | +9.9% | 0.881% | 0.00% |
| 24 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 250K | $24.0M | +5.9% | 0.793% | 0.00% |
| 25 | Science & Technology Partners, L.P. | 249K | $23.9M | — | 0.792% | 4.03% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in AEHR — a direct measure of their conviction.
Filings activity in AEHR during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 268 | +37% | 95.33% | +11.00 pp | $2.75B | +199% |
| Q1 2026 | 196 | +28% | 84.33% | +2.13 pp | $920M | +79% |
| Q4 2025 | 153 | +1.3% | 82.20% | 0.87 pp | $513M | 32% |
| Q3 2025 | 151 | +25% | 83.07% | +21.42 pp | $750M | +215% |
| Q2 2025 | 121 | +8.0% | 61.65% | 4.33 pp | $238M | +64% |
| Q1 2025 | 112 | 14% | 65.98% | 7.92 pp | $145M | 60% |
| Q4 2024 | 130 | +5.7% | 73.90% | +1.74 pp | $365M | +34% |
| Q3 2024 | 123 | — | 72.16% | — | $274M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying AEHR stock.
Based on Q2 2026 13F filings, institutional ownership of Aehr Test Systems stands at 95.3%, held across 268 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of AEHR, with approximately 2,659,542 shares worth $0.26B as of Q2 2026.
Yes — 4 widely-followed marquee investors appear among the top 25 institutional holders of AEHR, including JANE STREET GROUP, LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, CITADEL ADVISORS LLC, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for AEHR is 84 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
96 institutions opened new positions in AEHR during Q2 2026, while 26 fully exited. 142 added to existing positions and 22 trimmed.
AEHR institutional ownership rose by 11.00 percentage points quarter-over-quarter, with a net change of +72 holders.
The top 10 institutions account for 53.6% of all reported 13F value in AEHR, and the top 25 account for 78.2%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Aehr Test Systems (AEHR) Institutional Ownership