Adicet BioACET
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 48 institutions reported holding Adicet Bio Inc. (ACET) in their 13F filings, unchanged from Q4 2025. 9 opened new positions and 10 sold out. The largest holders were Ra Capital Management, L.P. ($8.1M), Orbimed Advisors LLC ($7.0M) and Franklin Resources Inc. ($4.3M). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Adicet Bio Inc.
- CUSIP
- 007002207
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 9 | $862K |
| Exits | 10 | $3.9M |
All 13F filers, Q4 2025 → Q1 2026: 731,255 shares bought and 1,031,534 shares sold, net −300,279 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 48 holders
| Ra Capital Management, L.P. | 0.09% | Add +24.7% | 1,182,624 | $8.1M |
| Orbimed Advisors LLC | 0.16% | No change | 1,027,944 | $7.0M |
| Franklin Resources Inc. | 0.00% | No change | 626,571 | $4.3M |
| Citadel Advisors | 0.00% | Add +254.2% | 381,823 | $2.6M |
| Vanguard Capital Management LLC | 0.00% | — | 336,524 | $2.3M |
| Woodline Partners LP | 0.01% | Reduce -49.9% | 313,124 | $2.1M |
| Adage Capital Partners Gp, L.L.C. | 0.00% | No change | 274,375 | $1.9M |
| Prosight Management, LP | 0.28% | No change | 250,244 | $1.7M |
| Renaissance Technologies | 0.00% | Reduce -4.3% | 232,591 | $1.6M |
| Stonepine Capital Management, LLC | 1.33% | Add +0.9% | 221,955 | $1.5M |
| Alyeska Investment Group, L.P. | 0.00% | No change | 203,799 | $1.4M |
| Carlyle Group Inc. | 0.01% | No change | 184,295 | $1.3M |
| NEXTBio Capital Management LP | 0.50% | No change | 157,827 | $1.1M |
| Acadian Asset Management LLC | 0.00% | Reduce -34.9% | 118,138 | $802K |
| Geode Capital Management, LLC | 0.00% | Add +13.8% | 101,135 | $689K |
| DAFNA Capital Management LLC | 0.15% | No change | 93,812 | $639K |
| Burkehill Global Management, LP | 0.02% | No change | 62,500 | $426K |
| Rangeley Capital, LLC | 0.41% | Add +124.0% | 56,000 | $381K |
| ADAR1 Capital Management, LLC | 0.02% | Reduce -58.2% | 53,827 | $367K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 50,334 | $343K |
| Trexquant Investment LP | 0.00% | New | 43,666 | $297K |
| Two Sigma Investments, LP | 0.00% | Reduce -70.2% | 43,106 | $294K |
| RBF Capital, LLC | 0.01% | No change | 38,582 | $263K |
| UBS Group AG | 0.00% | Add +910.5% | 38,368 | $261K |
| Jane Street Group, LLC | 0.00% | New | 37,084 | $253K |
| BlackRock, Inc. | 0.00% | No change | 36,585 | $249K |
| State Street Corp. | 0.00% | Add +39.9% | 36,222 | $247K |
| Barclays PLC | 0.00% | No change | 25,000 | $170K |
| Johnson & Johnson | 0.02% | No change | 22,779 | $155K |
| Northern Trust Corp. | 0.00% | Add +36.5% | 19,200 | $131K |
| XTX Topco Ltd | 0.00% | Add +2.8% | 19,126 | $130K |
| Occudo Quantitative Strategies LP | 0.01% | New | 15,100 | $114K |
| Vontobel Holding Ltd. | 0.00% | New | 14,247 | $97K |
| Dimensional Fund Advisors LP | 0.00% | New | 10,778 | $73K |
| Vanguard Global Advisers, LLC | 0.00% | — | 5,221 | $36K |
| NewEdge Advisors, LLC | 0.00% | New | 3,854 | $26K |
| Morgan Stanley | 0.00% | Add +14.9% | 3,493 | $24K |
| FNY Investment Advisers, LLC | 0.01% | Reduce -47.5% | 3,200 | $21K |
| Royal Bank of Canada | 0.00% | Reduce -68.8% | 1,699 | $11K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +32.6% | 1,421 | $10K |
| Simplex Trading, LLC | 0.00% | Add +1501.2% | 1,393 | $9K |
| Avion Wealth | 0.00% | New | 246 | $1K |
| BNP Paribas Financial Markets | 0.00% | No change | 50 | $340 |
| SBI Securities Co., Ltd. | 0.00% | No change | 19 | $129 |
| National Bank of Canada | 0.00% | New | 17 | $115 |
| JPMorgan Chase & Co. | 0.00% | Reduce -33.3% | 8 | $49 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 3 | $20 |
| Danske Bank A/S | 0.00% | No change | 1 | $7 |
"% of holder's portfolio" is ACET's weight in each manager's 13F, not the share of Adicet Bio Inc. the manager owns.