Q32 BioQTTB
13F holders, Q3 2025 (September 30)At the end of Q3 2025, 53 institutions reported holding Q32 Bio Inc. (QTTB) in their 13F filings, down 8 from Q2 2025. 8 opened new positions and 16 sold out. The largest holders were Orbimed Advisors LLC ($4.5M), Atlas Venture Life Science Advisors, LLC ($4.1M) and Carlyle Group Inc. ($2.1M). 3 famous investors held it, including Israel Englander (0.0% of Millennium 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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 8 | $150K |
| Exits | 16 | $303K |
All 13F filers, Q2 2025 → Q3 2025: 135,562 shares bought and 685,415 shares sold, net −549,853 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 53 holders
| Orbimed Advisors LLC | 0.11% | No change | 2,252,987 | $4.5M |
| Atlas Venture Life Science Advisors, LLC | 0.55% | No change | 2,092,106 | $4.1M |
| Carlyle Group Inc. | 0.05% | No change | 1,102,741 | $2.1M |
| Acorn Capital Advisors, LLC | 0.81% | No change | 803,425 | $1.6M |
| ARCH Venture Management, LLC | 0.13% | No change | 320,482 | $635K |
| Monaco Asset Management SAM | 0.23% | Reduce -47.4% | 311,137 | $616K |
| Vanguard Group Inc. | 0.00% | Add +9.6% | 295,409 | $585K |
| Pfizer Inc | 0.13% | No change | 277,777 | $550K |
| Sanofi | 0.19% | No change | 244,083 | $483K |
| Trustees of Columbia University in the City of New York | 0.04% | No change | 133,903 | $265K |
| Millennium Management | 0.00% | Reduce -19.6% | 104,772 | $207K |
| BlackRock, Inc. | 0.00% | Reduce -48.0% | 93,005 | $184K |
| Geode Capital Management, LLC | 0.00% | Add +43.7% | 88,496 | $175K |
| Renaissance Technologies | 0.00% | Reduce -38.6% | 47,300 | $94K |
| Northern Trust Corp. | 0.00% | Add +22.6% | 31,953 | $63K |
| Two Sigma Investments, LP | 0.00% | New | 31,506 | $62K |
| Acadian Asset Management LLC | 0.00% | No change | 29,739 | $58K |
| Affinity Asset Advisors, LLC | 0.01% | No change | 27,777 | $55K |
| State Street Corp. | 0.00% | Reduce -21.2% | 21,237 | $42K |
| FMR LLC | 0.00% | Reduce -62.6% | 15,867 | $31K |
| HRT Financial LP | 0.00% | New | 14,836 | $29K |
| Two Sigma Securities, LLC | 0.00% | New | 13,749 | $27K |
| Morgan Stanley | 0.00% | Reduce -39.2% | 11,343 | $22K |
| DLK Investment Management, LLC | 0.01% | No change | 10,333 | $20K |
| Citadel Advisors | 0.00% | New | 10,117 | $20K |
| SBI Securities Co., Ltd. | 0.00% | Add +0.0% | 8,156 | $16K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +3.7% | 6,482 | $13K |
| UBS Group AG | 0.00% | Reduce -58.3% | 5,246 | $10K |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -5.2% | 5,025 | $10K |
| Global Retirement Partners, LLC | 0.00% | New | 5,000 | $10K |
| Federated Hermes, Inc. | 0.00% | Reduce -3.2% | 2,374 | $5K |
| China Universal Asset Management Co., Ltd. | 0.00% | Reduce -12.7% | 2,138 | $4K |
| Bank of America Corp. | 0.00% | Reduce -30.6% | 1,525 | $3K |
| Arax Advisory Partners | 0.00% | Add +9.4% | 1,215 | $2K |
| Royal Bank of Canada | 0.00% | Reduce -83.3% | 1,053 | $2K |
| Barclays PLC | 0.00% | Reduce -21.9% | 822 | $2K |
| Allworth Financial LP | 0.00% | Add +3712.5% | 610 | $1K |
| Rockefeller Capital Management L.P. | 0.00% | New | 577 | $1K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +0.2% | 472 | $935 |
| Russell Investments Group, Ltd. | 0.00% | No change | 454 | $899 |
| BNP Paribas Financial Markets | 0.00% | Add +7.2% | 432 | $855 |
| Citigroup Inc. | 0.00% | Reduce -87.0% | 236 | $467 |
| GF Fund Management Co. LTD. | 0.00% | Reduce -14.0% | 227 | $449 |
| Osaic Holdings, Inc. | 0.00% | Add +4.5% | 187 | $367 |
| Nisa Investment Advisors, LLC | 0.00% | Reduce -71.8% | 166 | $329 |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 70 | $137 |
| Group One Trading LLC | 0.00% | New | 34 | $67 |
| Harbour Investments, Inc. | 0.00% | No change | 11 | $22 |
| St Germain D J Co. Inc. | 0.00% | No change | 11 | $22 |
| JPMorgan Chase & Co. | 0.00% | New | 4 | $8 |
| AdvisorNet Financial, Inc | 0.00% | No change | 2 | $4 |
| Danske Bank A/S | 0.00% | No change | 1 | $2 |
| Cwm, LLC | 0.00% | Reduce -95.4% | 219 | $0 |
"% of holder's portfolio" is QTTB's weight in each manager's 13F, not the share of Q32 Bio Inc. the manager owns.