Adicet Bio, Inc.
ACET- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001720580
No open-market purchases or sales by Adicet Bio, Inc. insiders were filed in the last 90 days; 56 institutions reported holding it in 13F filings for Q2 2026, worth $52.8M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Adicet Bio, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 49
- +1 vs. Q4 2025
- Shares held
- 6.41M
- −19.5K (−0.3%) vs. Q4 2025
- Total value
- $43.7M
- −$10.5M (−19.3%) vs. Q4 2025
- New holders
- 12
- 12 more added
- Sold out
- 11
- 8 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ACET on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 56 | $52.8M |
| Q1 2026 | 49 | $43.7M |
| Q4 2025 | 49 | $56.6M |
| Q3 2025 | 54 | $41.6M |
| Q2 2025 | 49 | $31.5M |
| Q1 2025 | 56 | $42.0M |
| Q4 2024 | 64 | $55.4M |
| Q3 2024 | 64 | $82.3M |
| Q2 2024 | 86 | $77.4M |
| Q1 2024 | 98 | $176.6M |
| Q4 2023 | 77 | $63.0M |
| Q3 2023 | 84 | $48.9M |
| Q2 2023 | 95 | $90.4M |
| Q1 2023 | 107 | $231.3M |
| Q4 2022 | 100 | $375.7M |
| Q3 2022 | 102 | $590.7M |
| Q2 2022 | 101 | $555.9M |
| Q1 2022 | 88 | $660.4M |
| Q4 2021 | 81 | $531.2M |
| Q3 2021 | 58 | $156.1M |
| Q2 2021 | 66 | $218.1M |
| Q1 2021 | 54 | $266.3M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Adicet Bio, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 1,182,624 | $8.05M | 0.09% | +234,375+24.7% | Added |
| OrbiMed Advisors LLC | 1,027,944 | $7.00M | 0.16% | 00.0% | Unchanged |
| Franklin Resources Inc | 626,571 | $4.27M | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 381,823 | $2.60M | 0.00% | +274,009+254.1% | Added |
| Vanguard Capital Management LLC | 336,524 | $2.29M | 0.00% | +336,524 | New |
| Woodline Partners LP | 313,124 | $2.13M | 0.01% | −311,876−49.9% | Reduced |
| Adage Capital Partners GP, L.L.C. | 274,375 | $1.87M | 0.00% | 00.0% | Unchanged |
| Prosight Management, LP | 250,244 | $1.70M | 0.28% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 232,591 | $1.58M | 0.00% | −10,354−4.3% | Reduced |
| Stonepine Capital Management, LLC | 221,955 | $1.51M | 1.33% | +1,944+0.9% | Added |
| Alyeska Investment Group, L.P. | 203,799 | $1.39M | 0.00% | 00.0% | Unchanged |
| Carlyle Group Inc. | 184,295 | $1.26M | 0.01% | 00.0% | Unchanged |
| NEXTBio Capital Management LP | 157,827 | $1.07M | 0.50% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 118,138 | $802.0K | 0.00% | −63,257−34.9% | Reduced |
| Geode Capital Management, LLC | 101,135 | $689.0K | 0.00% | +12,279+13.8% | Added |
| DAFNA Capital Management LLC | 93,812 | $638.9K | 0.15% | 00.0% | Unchanged |
| Burkehill Global Management, LP | 62,500 | $425.6K | 0.02% | 00.0% | Unchanged |
| Regeneron Pharmaceuticals, Inc. | 60,511 | $412.1K | 0.86% | 00.0% | Unchanged |
| Rangeley Capital, LLC | 56,000 | $381.4K | 0.41% | +30,999+124.0% | Added |
| ADAR1 Capital Management, LLC | 53,827 | $366.6K | 0.02% | −74,819−58.2% | Reduced |
| Vanguard Fiduciary Trust Co | 50,334 | $342.8K | 0.00% | +50,334 | New |
| Trexquant Investment LP | 43,666 | $297.4K | 0.00% | +43,666 | New |
| Two Sigma Investments, LP | 43,106 | $293.6K | 0.00% | −101,690−70.2% | Reduced |
| RBF Capital, LLC | 38,582 | $262.7K | 0.01% | 00.0% | Unchanged |
| UBS Group AG | 38,368 | $261.3K | 0.00% | +34,571+910.5% | Added |
| Jane Street Group, LLC | 37,084 | $252.5K | 0.00% | +37,084 | New |
| BlackRock, Inc. | 36,585 | $249.1K | 0.00% | 00.0% | Unchanged |
| State Street Corp | 36,222 | $246.7K | 0.00% | +10,326+39.9% | Added |
| Barclays PLC | 25,000 | $170.3K | 0.00% | 00.0% | Unchanged |
| Johnson & Johnson | 22,779 | $155.1K | 0.02% | 00.0% | Unchanged |
| Northern Trust Corp | 19,200 | $130.8K | 0.00% | +5,133+36.5% | Added |
| XTX Topco Ltd | 19,126 | $130.2K | 0.00% | +516+2.8% | Added |
| Occudo Quantitative Strategies LP | 15,100 | $114.0K | 0.01% | +15,100 | New |
| Vontobel Holding Ltd. | 14,247 | $97.0K | 0.00% | +14,247 | New |
| Dimensional Fund Advisors LP | 10,778 | $73.4K | 0.00% | +10,778 | New |
| Vanguard Global Advisers, LLC | 5,221 | $35.6K | 0.00% | +5,221 | New |
| GWM Advisors LLC | 3,854 | $26.2K | 0.00% | +3,854 | New |
| Morgan Stanley | 3,493 | $23.8K | 0.00% | +453+14.9% | Added |
| FNY Investment Advisers, LLC | 3,200 | $21.0K | 0.01% | −2,900−47.5% | Reduced |
| Royal Bank of Canada | 1,699 | $11.0K | 0.00% | −3,750−68.8% | Reduced |
| Tower Research Capital LLC (TRC) | 1,421 | $9.68K | 0.00% | +349+32.6% | Added |
| Simplex Trading, LLC | 1,393 | $9.49K | 0.00% | +1,306+1,501.1% | Added |
| Avion Wealth | 246 | $1.00K | 0.00% | +246 | New |
| BNP Paribas Arbitrage, SA | 50 | $340 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 19 | $129 | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 17 | $115 | 0.00% | +17 | New |
| JPMorgan Chase & Co | 8 | $49 | 0.00% | −4−33.3% | Reduced |
| Caitong International Asset Management Co., Ltd | 3 | $20 | 0.00% | +3 | New |
| Danske Bank A/S | 1 | $7 | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −234,510−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −111,336−100.0% | Sold out |
| Luminus Management LLC | 0 | $0 | 0.00% | −59,558−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −56,350−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −55,723−100.0% | Sold out |
| Maven Securities LTD | 0 | $0 | 0.00% | −31,250−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −17,763−100.0% | Sold out |
| Tang Capital Management LLC | 0 | $0 | 0.00% | −6,158−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −1,288−100.0% | Sold out |
| Hollencrest Capital Management | 0 | $0 | 0.00% | −250−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −34−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |