AEHR Aehr Test Systems
Aehr Test Systems (AEHR) Institutional Ownership
What the institutions did with AEHR last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 2.7M | 11.4% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.3M | 5.7% |
| D. E. Shaw & Co., Inc. | 1.2M | 5.0% |
| TWO SIGMA INVESTMENTS, LP | 1.2M | 5.0% |
| FMR LLC | 1.0M | 4.3% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 966.7K | 4.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 875.5K | 3.8% |
| GOLDMAN SACHS GROUP INC | 810.0K | 3.5% |
| JANE STREET GROUP, LLC | 753.5K | 3.2% |
| JPMORGAN CHASE & CO | 732.5K | 3.1% |
| STATE STREET CORP | 712.9K | 3.1% |
| Connor, Clark & Lunn Investment Management Ltd. | 670.8K | 2.9% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 507.0K | 2.2% |
| MORGAN STANLEY | 480.4K | 2.1% |
| NEXT CENTURY GROWTH INVESTORS LLC | 410.7K | 1.8% |
| CITADEL ADVISORS LLC | 400.7K | 1.7% |
| MARSHALL WACE, LLP | 382.7K | 1.6% |
| AWM Investment Company, Inc. | 374.8K | 1.6% |
| T. Rowe Price Investment Management, Inc. | 318.1K | 1.4% |
| Invesco Ltd. | 296.2K | 1.3% |
| NORTHERN TRUST CORP | 277.0K | 1.2% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 249.5K | 1.1% |
| Science & Technology Partners, L.P. | 249.0K | 1.1% |
| LORD, ABBETT & CO. LLC | 247.6K | 1.1% |
| WELLINGTON MANAGEMENT GROUP LLP | 238.5K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| AWM Investment Company, Inc. | Reduced | 1.6M | 374.8K | -1.2M |
| FMR LLC | Reduced | 2.1M | 1.0M | -1.1M |
| TWO SIGMA INVESTMENTS, LP | Increased | 214.4K | 1.2M | +950.2K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 1.3M | 507.0K | -842.3K |
| D. E. Shaw & Co., Inc. | Increased | 341.6K | 1.2M | +835.8K |
| BAILLIE GIFFORD & CO | Reduced | 1.0M | 203.9K | -797.1K |
| JPMORGAN CHASE & CO | Increased | 190.3K | 732.5K | +542.2K |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Sold Out | 513.3K | 0 | -513.3K |
| JANE STREET GROUP, LLC | Increased | 277.0K | 753.5K | +476.5K |
| GOLDMAN SACHS GROUP INC | Reduced | 1.3M | 810.0K | -452.0K |
| Connor, Clark & Lunn Investment Management Ltd. | Increased | 218.8K | 670.8K | +451.9K |
| BlackRock, Inc. | Increased | 2.3M | 2.7M | +372.6K |
| MARSHALL WACE, LLP | Increased | 10.2K | 382.7K | +372.5K |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Sold Out | 344.2K | 0 | -344.2K |
| GILDER GAGNON HOWE & CO LLC | Reduced | 444.3K | 100.2K | -344.1K |
| NEXT CENTURY GROWTH INVESTORS LLC | Reduced | 754.7K | 410.7K | -344.0K |
| T. Rowe Price Investment Management, Inc. | New | 0 | 318.1K | +318.1K |
| MORGAN STANLEY | Increased | 165.7K | 480.4K | +314.7K |
| Walleye Capital LLC | Reduced | 267.2K | 191 | -267.0K |
| CITADEL ADVISORS LLC | Increased | 141.3K | 400.7K | +259.4K |
| Science & Technology Partners, L.P. | New | 0 | 249.0K | +249.0K |
| Driehaus Capital Management LLC | New | 0 | 238.4K | +238.4K |
| Trexquant Investment LP | New | 0 | 201.9K | +201.9K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 202.0K | 16.9K | -185.2K |
| RICE HALL JAMES & ASSOCIATES, LLC | Reduced | 272.3K | 87.5K | -184.7K |
| NEUBERGER BERMAN GROUP LLC | New | 0 | 167.7K | +167.7K |
| TUDOR INVESTMENT CORP ET AL | Increased | 48.2K | 204.6K | +156.4K |
| KADENSA CAPITAL Ltd | New | 0 | 155.3K | +155.3K |
| Penn Capital Management Company, LLC | New | 0 | 150.5K | +150.5K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 725.7K | 875.5K | +149.8K |
| BERKSHIRE CAPITAL HOLDINGS INC | New | 0 | 142.6K | +142.6K |
| HRT FINANCIAL LP | New | 0 | 140.6K | +140.6K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 6.3K | 145.6K | +139.3K |
| RENAISSANCE TECHNOLOGIES LLC | New | 0 | 134.5K | +134.5K |
| ExodusPoint Capital Management, LP | Sold Out | 93.6K | 0 | -93.6K |
| STATE STREET CORP | Increased | 623.3K | 712.9K | +89.6K |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 152.9K | 238.5K | +85.6K |
| ALGERT GLOBAL LLC | New | 0 | 82.3K | +82.3K |
| UBS Group AG | Reduced | 246.8K | 169.1K | -77.6K |
| NEW YORK STATE COMMON RETIREMENT FUND | Increased | 61.6K | 138.0K | +76.5K |
| KENNEDY CAPITAL MANAGEMENT LLC | Sold Out | 76.0K | 0 | -76.0K |
| Penbrook Management LLC | Reduced | 79.5K | 5.2K | -74.3K |
| LORD, ABBETT & CO. LLC | Increased | 179.3K | 247.6K | +68.4K |
| Pier Capital, LLC | Reduced | 127.0K | 60.4K | -66.6K |
| KLCM Advisors, Inc. | Reduced | 75.0K | 10.0K | -65.0K |
| BANK OF AMERICA CORP /DE/ | Increased | 56.8K | 121.1K | +64.3K |
| Evergreen Quality Fund GP, Ltd. | New | 0 | 62.4K | +62.4K |
| Kestra Advisory Services, LLC | Sold Out | 60.1K | 0 | -60.1K |
| Johnson Financial Group, LLC | Reduced | 68.9K | 15.3K | -53.6K |
| FRANKLIN RESOURCES INC | Increased | 13.3K | 64.8K | +51.6K |
| GRATIA CAPITAL, LLC | Sold Out | 51.6K | 0 | -51.6K |
| IMC-Chicago, LLC | Sold Out | 50.7K | 0 | -50.7K |
| BARCLAYS PLC | Increased | 52.2K | 101.2K | +49.0K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 917.9K | 966.7K | +48.8K |
| CAPITAL FUND MANAGEMENT S.A. | New | 0 | 44.9K | +44.9K |
| Schonfeld Strategic Advisors LLC | New | 0 | 44.1K | +44.1K |
| Premier Fund Managers Ltd | New | 0 | 41.4K | +41.4K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.3M | 1.3M | +38.5K |
| Kultura Capital Management LP | Increased | 80.2K | 117.9K | +37.7K |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC | New | 0 | 36.6K | +36.6K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.