Q32 BioQTTB
13F holders, Q2 2026 (June 30)71holders +18
27new positions
8sold out
4famous investors
$12.74avg. 13F price*
At the end of Q2 2026, 71 institutions reported holding Q32 Bio Inc. (QTTB) in their 13F filings, up 18 from Q1 2026. 27 opened new positions and 8 sold out. The largest holders were Orbimed Advisors LLC ($52.6M), Boxer Capital Management, LLC ($40.1M) and Atlas Venture Life Science Advisors, LLC ($34.6M). 4 famous investors held it, including Steve Cohen (0.0% of Point72 Asset Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Q32 Bio Inc.
- CUSIP
- 746964105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 27 | $148.6M |
| Exits | 8 | $4.7M |
All 13F filers, Q1 2026 → Q2 2026: 15,002,291 shares bought and 2,252,074 shares sold, net +12,750,217 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 71 holders
| Orbimed Advisors LLC | 1.00% | Add +83.2% | 4,127,987 | $52.6M |
| Boxer Capital Management, LLC | 3.02% | New | 3,149,310 | $40.1M |
| Atlas Venture Life Science Advisors, LLC | 3.93% | Add +29.9% | 2,717,106 | $34.6M |
| BVF Inc. | 0.77% | New | 2,350,000 | $29.9M |
| Ra Capital Management, L.P. | 0.26% | New | 2,332,457 | $29.7M |
| Point72 Asset Management | 0.02% | New | 1,173,396 | $14.9M |
| Opaleye Management Inc. | 1.07% | Reduce -25.9% | 931,000 | $11.9M |
| Logos Global Management LP | 0.44% | New | 800,000 | $10.2M |
| SummitTX Capital, L.P. | 0.25% | New | 733,774 | $9.3M |
| Vanguard Capital Management LLC | 0.00% | Add +69.3% | 518,803 | $6.6M |
| Ikarian Capital, LLC | 0.90% | New | 430,000 | $5.5M |
| Woodline Partners LP | 0.01% | New | 286,212 | $3.6M |
| American Century Companies Inc. | 0.00% | Add +1353.1% | 272,752 | $3.5M |
| Sanofi | 0.58% | No change | 244,083 | $3.1M |
| Acadian Asset Management LLC | 0.00% | Add +26.4% | 218,234 | $2.8M |
| Acorn Capital Advisors, LLC | 0.75% | Reduce -31.4% | 216,171 | $2.8M |
| Renaissance Technologies | 0.00% | Reduce -13.2% | 179,600 | $2.3M |
| Jane Street Group, LLC | 0.00% | Add +148.1% | 162,747 | $2.1M |
| Monimus Capital Management, LP | 0.43% | Reduce -1.7% | 132,036 | $1.7M |
| Boothbay Fund Management, LLC | 0.03% | New | 130,427 | $1.7M |
| Geode Capital Management, LLC | 0.00% | Add +3.8% | 122,690 | $1.6M |
| Citadel Advisors | 0.00% | Add +679.4% | 120,663 | $1.5M |
| BlackRock, Inc. | 0.00% | Add +37.6% | 118,507 | $1.5M |
| Marshall Wace, LLP | 0.00% | Add +27.9% | 67,045 | $854K |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +32.5% | 66,217 | $844K |
| Carlyle Group Inc. | 0.01% | Reduce -94.5% | 60,363 | $769K |
| State Street Corp. | 0.00% | Add +25.8% | 52,214 | $665K |
| Two Sigma Investments, LP | 0.00% | Add +17.1% | 49,582 | $632K |
| Quadrature Capital Ltd | 0.00% | New | 36,396 | $464K |
| Bridgeway Capital Management, LLC | 0.01% | Add +174.4% | 34,613 | $441K |
| DAFNA Capital Management LLC | 0.08% | New | 32,896 | $419K |
| Knott David M Jr | 0.20% | New | 30,412 | $387K |
| Affinity Asset Advisors, LLC | 0.02% | No change | 27,777 | $354K |
| Squarepoint Ops LLC | 0.00% | New | 23,790 | $303K |
| Northern Trust Corp. | 0.00% | Reduce -5.6% | 23,631 | $301K |
| Dimensional Fund Advisors LP | 0.00% | New | 23,588 | $301K |
| Susquehanna International Group, LLP | 0.00% | New | 23,342 | $297K |
| Mangrove Partners Im, LLC | 0.02% | New | 22,150 | $282K |
| LPL Financial LLC | 0.00% | New | 18,170 | $231K |
| Cambridge Investment Research Advisors, Inc. | 0.00% | Reduce -48.4% | 18,081 | $230K |
| HRT Financial LP | 0.00% | New | 15,949 | $203K |
| UBS Group AG | 0.00% | Add +5458.5% | 15,008 | $191K |
| Balyasny Asset Management L.P. | 0.00% | New | 12,342 | $157K |
| ExodusPoint Capital Management, LP | 0.00% | New | 11,336 | $144K |
| Millennium Management | 0.00% | New | 10,928 | $139K |
| XTX Topco Ltd | 0.00% | New | 10,874 | $139K |
| Morgan Stanley | 0.00% | Reduce -32.5% | 6,456 | $82K |
| Vanguard Global Advisers, LLC | 0.00% | Add +151.9% | 4,824 | $61K |
| FMR LLC | 0.00% | Reduce -0.3% | 3,388 | $43K |
| Citigroup Inc. | 0.00% | New | 2,888 | $37K |
| Private Wealth Asset Management, LLC | 0.00% | New | 1,700 | $22K |
| Arax Advisory Partners | 0.00% | Reduce -3.2% | 1,111 | $14K |
| Federated Hermes, Inc. | 0.00% | Reduce -53.8% | 1,050 | $13K |
| Rockefeller Capital Management L.P. | 0.00% | No change | 577 | $7K |
| Jones Financial Companies LLLP | 0.00% | No change | 500 | $7K |
| Russell Investments Group, Ltd. | 0.00% | No change | 454 | $6K |
| BNP Paribas Financial Markets | 0.00% | No change | 303 | $4K |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -94.8% | 240 | $3K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 166 | $2K |
| Truvestments Capital LLC | 0.00% | New | 162 | $2K |
| Osaic Holdings, Inc. | 0.00% | No change | 124 | $2K |
| Allworth Financial LP | 0.00% | Add +10.2% | 108 | $1K |
| SBI Securities Co., Ltd. | 0.00% | Reduce -9.6% | 94 | $1K |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 70 | $888 |
| Clearstead Advisors, LLC | 0.00% | New | 67 | $854 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 45 | $573 |
| Group One Trading LLC | 0.00% | No change | 34 | $433 |
| Harbour Investments, Inc. | 0.00% | No change | 11 | $140 |
| AdvisorNet Financial, Inc | 0.00% | No change | 2 | $25 |
| Danske Bank A/S | 0.00% | No change | 1 | $13 |
| Royal Bank of Canada | 0.00% | Reduce -98.4% | 43 | $0 |
"% of holder's portfolio" is QTTB's weight in each manager's 13F, not the share of Q32 Bio Inc. the manager owns.