QTTB Q32 Bio Inc.: institutional ownership and insider trading
74 funds reported holding $287M of Q32 Bio Inc. in their latest 13F filings; in Q2 2026 funds net bought $166M, with 27 new positions and 8 funds selling out; over the last 12 months insiders bought $30.0M and sold $505K on the open market.
Famous investors holding QTTB
- Renaissance Technologies (Renaissance Technologies): $2.29M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $1.54M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $632K, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $139K, 0.0% of the portfolio
Largest institutional holders of QTTB
- ORBIMED ADVISORS LLC — $52.6M
- Boxer Capital Management, LLC — $40.1M
- Atlas Venture Life Science Advisors, LLC — $34.6M
- BVF INC/IL — $29.9M
- RA CAPITAL MANAGEMENT, L.P. — $29.7M
- Point72 Asset Management, L.P. — $14.9M
- Opaleye Management Inc. — $11.9M
- Logos Global Management LP — $10.2M
- SummitTX Capital, L.P. — $9.35M
- Ikarian Capital, LLC — $8.03M
Recent QTTB insider trades
- Oct 6, 2026: Kalowski Lee sold 1,301 shares ($10.8K)
- Oct 6, 2026: Violette Shelia M. sold 917 shares ($7.63K)
- Oct 6, 2026: Morrison Jodie Pope sold 3,221 shares ($26.8K)
- Aug 25, 2026: Violette Shelia M. sold 2,798 shares ($46.3K)
5%+ owners
- ORBIMED ADVISORS LLC: 13.9% (Schedule 13D/A, filed Jul 20, 2026)
- Boxer Capital Management, LLC: 13.3% (Schedule 13G, filed Jul 10, 2026)
- BVF PARTNERS L P/IL: 10.0% (Schedule 13G, filed Jun 4, 2026)
- RA Capital Management, L.P.: 9.8% (Schedule 13G, filed Jun 4, 2026)
- Frazier Life Sciences Public Fund, L.P.: 5.9% (Schedule 13G, filed Oct 9, 2026)
- Opaleye Management Inc.: 5.5% (Schedule 13G/A, filed Jul 31, 2026)