ACET Adicet Bio, Inc.
Adicet Bio, Inc. (ACET) Institutional Ownership
What the institutions did with ACET 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 |
|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 932.6K | 15.3% |
| ORBIMED ADVISORS LLC | 844.8K | 13.8% |
| FRANKLIN RESOURCES INC | 626.6K | 10.3% |
| CITADEL ADVISORS LLC | 432.7K | 7.1% |
| VANGUARD CAPITAL MANAGEMENT LLC | 343.2K | 5.6% |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 274.4K | 4.5% |
| RENAISSANCE TECHNOLOGIES LLC | 265.9K | 4.4% |
| Stonepine Capital Management, LLC | 245.5K | 4.0% |
| Alyeska Investment Group, L.P. | 203.8K | 3.3% |
| Schonfeld Strategic Advisors LLC | 195.5K | 3.2% |
| Carlyle Group Inc. | 184.3K | 3.0% |
| NEXTBio Capital Management LP | 157.8K | 2.6% |
| ACADIAN ASSET MANAGEMENT LLC | 124.8K | 2.0% |
| TWO SIGMA INVESTMENTS, LP | 96.8K | 1.6% |
| GEODE CAPITAL MANAGEMENT, LLC | 95.6K | 1.6% |
| DAFNA Capital Management LLC | 93.8K | 1.5% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 86.0K | 1.4% |
| MARSHALL WACE, LLP | 79.5K | 1.3% |
| Trexquant Investment LP | 78.0K | 1.3% |
| JANE STREET GROUP, LLC | 70.6K | 1.2% |
| Burkehill Global Management, LP | 62.5K | 1.0% |
| BlackRock, Inc. | 62.1K | 1.0% |
| REGENERON PHARMACEUTICALS, INC. | 60.5K | 1.0% |
| Rangeley Capital, LLC | 50.9K | 0.8% |
| VANGUARD FIDUCIARY TRUST CO | 50.7K | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Woodline Partners LP | Sold Out | 313.1K | 0 | -313.1K |
| Prosight Management, LP | Sold Out | 250.2K | 0 | -250.2K |
| RA CAPITAL MANAGEMENT, L.P. | Reduced | 1.2M | 932.6K | -250.0K |
| Schonfeld Strategic Advisors LLC | New | 0 | 195.5K | +195.5K |
| ORBIMED ADVISORS LLC | Reduced | 1.0M | 844.8K | -183.2K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | New | 0 | 86.0K | +86.0K |
| MARSHALL WACE, LLP | New | 0 | 79.5K | +79.5K |
| ADAR1 Capital Management, LLC | Sold Out | 53.8K | 0 | -53.8K |
| TWO SIGMA INVESTMENTS, LP | Increased | 43.1K | 96.8K | +53.7K |
| CITADEL ADVISORS LLC | Increased | 381.8K | 432.7K | +50.9K |
| Quadrature Capital Ltd | New | 0 | 36.2K | +36.2K |
| Trexquant Investment LP | Increased | 43.7K | 78.0K | +34.3K |
| JANE STREET GROUP, LLC | Increased | 37.1K | 70.6K | +33.5K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 232.6K | 265.9K | +33.4K |
| BlackRock, Inc. | Increased | 36.6K | 62.1K | +25.5K |
| Verdad Advisers, LP | New | 0 | 25.2K | +25.2K |
| BARCLAYS PLC | Sold Out | 25.0K | 0 | -25.0K |
| Stonepine Capital Management, LLC | Increased | 222.0K | 245.5K | +23.6K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 10.8K | 31.6K | +20.8K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | 0 | 20.7K | +20.7K |
| PRELUDE CAPITAL MANAGEMENT, LLC | New | 0 | 18.6K | +18.6K |
| Squarepoint Ops LLC | New | 0 | 15.3K | +15.3K |
| AXQ CAPITAL, LP | New | 0 | 11.0K | +11.0K |
| Jump Financial, LLC | New | 0 | 10.9K | +10.9K |
| UBS Group AG | Reduced | 38.4K | 29.8K | -8.6K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 336.5K | 343.2K | +6.7K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 118.1K | 124.8K | +6.7K |
| Arax Advisory Partners | New | 0 | 6.0K | +6.0K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 101.1K | 95.6K | -5.5K |
| XTX Topco Ltd | Increased | 19.1K | 24.3K | +5.2K |
| Rangeley Capital, LLC | Reduced | 56.0K | 50.9K | -5.1K |
| NewEdge Advisors, LLC | Sold Out | 3.9K | 0 | -3.9K |
| SIMPLEX TRADING, LLC | Increased | 1.4K | 4.8K | +3.4K |
| FNY Investment Advisers, LLC | Sold Out | 3.2K | 0 | -3.2K |
| OCCUDO QUANTITATIVE STRATEGIES LP | Increased | 15.1K | 16.6K | +1.5K |
| MORGAN STANLEY | Reduced | 3.5K | 2.3K | -1.2K |
| Tower Research Capital LLC (TRC) | Reduced | 1.4K | 277 | -1.1K |
| NORTHERN TRUST CORP | Reduced | 19.2K | 18.4K | -764 |
| Vontobel Holding Ltd. | Reduced | 14.2K | 13.8K | -471 |
| VANGUARD FIDUCIARY TRUST CO | Increased | 50.3K | 50.7K | +336 |
| JPMORGAN CHASE & CO | Increased | 8 | 196 | +188 |
| Caitong International Asset Management Co., Ltd | Increased | 3 | 47 | +44 |
| FMR LLC | New | 0 | 6 | +6 |
| SBI Securities Co., Ltd. | Increased | 19 | 24 | +5 |
| TD Waterhouse Canada Inc. | New | 0 | 3 | +3 |
| ROYAL BANK OF CANADA | Increased | 1.7K | 1.7K | +2 |
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.