ACET Adicet Bio, Inc.: institutional ownership and insider trading
57 funds reported holding $55.7M of Adicet Bio, Inc. in their latest 13F filings; in Q2 2026 funds net sold $2.07M, with 13 new positions and 6 funds selling out; over the last 12 months insiders bought $1.60M and sold $675K on the open market.
Famous investors holding ACET
- Ken Griffin (Citadel Advisors): $4.03M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $2.30M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $837K, 0.0% of the portfolio
Largest institutional holders of ACET
- RA CAPITAL MANAGEMENT, L.P. — $8.06M
- ORBIMED ADVISORS LLC — $7.30M
- FRANKLIN RESOURCES INC (BEN) — $5.41M
- CITADEL ADVISORS LLC — $4.03M
- VANGUARD CAPITAL MANAGEMENT LLC — $2.97M
- VANGUARD GROUP INC — $2.45M
- ADAGE CAPITAL PARTNERS GP, L.L.C. — $2.37M
- RENAISSANCE TECHNOLOGIES LLC — $2.30M
- Stonepine Capital Management, LLC — $2.12M
- Alyeska Investment Group, L.P. — $1.76M
Recent ACET insider trades
- Apr 8, 2026: Orbimed Advisors Llc sold 104,658 shares ($675K)
- Feb 20, 2026: RA Capital Healthcare Fund LP bought 223,596 shares ($1.60M)
- Oct 8, 2025: Orbimed Advisors Llc bought 5,000,000 shares ($5.00M)
5%+ owners
- RA Capital Management, L.P.: 9.9% (Schedule 13G/A, filed Aug 14, 2026)
- Zedek Daniel Clayton: 5.4% (Schedule 13G, filed Oct 23, 2026)