Q32 Bio Inc.
QTTB- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001661998
In the last 90 days, Q32 Bio Inc. insiders filed 0 open-market purchases and 3 sales; 72 institutions reported holding it in 13F filings for Q2 2026, worth $282.6M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Q32 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
- 54
- +4 vs. Q4 2025
- Shares held
- 9.43M
- +1.71M (+22.1%) vs. Q4 2025
- Total value
- $60.6M
- +$35.0M (+136.9%) vs. Q4 2025
- New holders
- 12
- 14 more added
- Sold out
- 8
- 9 more reduced
2 institutions 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 QTTB 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 | 72 | $282.6M |
| Q1 2026 | 54 | $60.6M |
| Q4 2025 | 52 | $26.7M |
| Q3 2025 | 53 | $16.6M |
| Q2 2025 | 61 | $13.4M |
| Q1 2025 | 73 | $15.5M |
| Q4 2024 | 92 | $37.8M |
| Q3 2024 | 73 | $405.8M |
| Q2 2024 | 54 | $144.2M |
| Q1 2024 | 39 | $125.9M |
| Q4 2023 | 58 | $11.4M |
| Q3 2023 | 58 | $20.8M |
| Q2 2023 | 59 | $15.9M |
| Q1 2023 | 62 | $20.0M |
| Q4 2022 | 79 | $27.3M |
| Q3 2022 | 83 | $38.7M |
| Q2 2022 | 87 | $49.9M |
| Q1 2022 | 107 | $89.7M |
| Q4 2021 | 121 | $123.0M |
| Q3 2021 | 119 | $252.1M |
| Q2 2021 | 118 | $239.9M |
| Q1 2021 | 109 | $272.7M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Q32 Bio Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| OrbiMed Advisors LLC | 2,252,987 | $14.5M | 0.33% | 00.0% | Unchanged |
| Atlas Venture Life Science Advisors, LLC | 2,092,106 | $13.4M | 1.70% | 00.0% | Unchanged |
| Opaleye Management Inc. | 1,256,228 | $8.06M | 1.06% | +1,042,865+488.8% | Added |
| Carlyle Group Inc. | 1,102,741 | $7.08M | 0.07% | 00.0% | Unchanged |
| ARCH Venture Management, LLC | 320,482 | $2.06M | 0.30% | 00.0% | Unchanged |
| Acorn Capital Advisors, LLC | 315,052 | $2.02M | 0.57% | −178,373−36.1% | Reduced |
| Vanguard Capital Management LLC | 306,401 | $1.97M | 0.00% | +306,401 | New |
| Mackenzie Financial Corp | 246,304 | $1.58M | 0.00% | +246,304 | New |
| Sanofi | 244,083 | $1.57M | 0.47% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 206,915 | $1.33M | 0.00% | +107,315+107.7% | Added |
| Acadian Asset Management LLC | 172,586 | $1.11M | 0.00% | +124,213+256.8% | Added |
| Monimus Capital Management, LP | 134,310 | $862.3K | 0.24% | +134,310 | New |
| Geode Capital Management, LLC | 118,152 | $758.7K | 0.00% | +12,039+11.3% | Added |
| Pfizer Inc | 101,618 | $736.7K | 0.31% | −176,159−63.4% | Reduced |
| BlackRock, Inc. | 86,147 | $553.1K | 0.00% | +26,215+43.7% | Added |
| Jane Street Group, LLC | 65,599 | $421.1K | 0.00% | +40,225+158.5% | Added |
| Marshall Wace, LLP | 52,440 | $336.7K | 0.00% | +52,440 | New |
| Vanguard Fiduciary Trust Co | 49,995 | $321.0K | 0.00% | +49,995 | New |
| Two Sigma Investments, LP | 42,346 | $271.9K | 0.00% | −4,479−9.6% | Reduced |
| State Street Corp | 41,514 | $266.5K | 0.00% | +20,277+95.5% | Added |
| Cambridge Investment Research Advisors, Inc. | 35,025 | $225.0K | 0.00% | +35,025 | New |
| ADAR1 Capital Management, LLC | 35,000 | $224.7K | 0.01% | +15,000+75.0% | Added |
| Affinity Asset Advisors, LLC | 27,777 | $178.3K | 0.01% | 00.0% | Unchanged |
| Northern Trust Corp | 25,033 | $160.7K | 0.00% | 00.0% | Unchanged |
| Cetera Investment Advisers | 20,695 | $132.9K | 0.00% | +20,695 | New |
| American Century Companies Inc | 18,770 | $120.5K | 0.00% | +18,770 | New |
| Citadel Advisors LLC | 15,481 | $99.4K | 0.00% | −30,247−66.1% | Reduced |
| Bridgeway Capital Management, LLC | 12,613 | $81.0K | 0.00% | +12,613 | New |
| Morgan Stanley | 9,560 | $61.4K | 0.00% | +4,082+74.5% | Added |
| EverSource Wealth Advisors, LLC | 4,640 | $29.8K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 3,400 | $21.8K | 0.00% | +36+1.1% | Added |
| Royal Bank of Canada | 2,744 | $18.0K | 0.00% | +2,509+1,067.7% | Added |
| Federated Hermes, Inc. | 2,273 | $14.6K | 0.00% | 00.0% | Unchanged |
| Vanguard Global Advisers, LLC | 1,915 | $12.3K | 0.00% | +1,915 | New |
| Tower Research Capital LLC (TRC) | 1,871 | $12.0K | 0.00% | +895+91.7% | Added |
| SRS Capital Advisors, Inc. | 1,148 | $7.37K | 0.00% | +37+3.3% | Added |
| Rockefeller Capital Management L.P. | 577 | $3.70K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 500 | $3.63K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 454 | $2.92K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 303 | $1.95K | 0.00% | −5−1.6% | Reduced |
| UBS Group AG | 270 | $1.73K | 0.00% | −13,336−98.0% | Reduced |
| Nisa Investment Advisors, LLC | 166 | $1.07K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 124 | $796 | 0.00% | −8−6.1% | Reduced |
| Northwestern Mutual Wealth Management Co | 111 | $713 | 0.00% | +81+270.0% | Added |
| SBI Securities Co., Ltd. | 104 | $668 | 0.00% | −53−33.8% | Reduced |
| Allworth Financial LP | 98 | $630 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 84 | $539 | 0.00% | +84 | New |
| Federation des caisses Desjardins du Quebec | 70 | $446 | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 39 | $250 | 0.00% | −15−27.8% | Reduced |
| Group One Trading, L.P. | 34 | $218 | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 11 | $71 | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 2 | $13 | 0.00% | 00.0% | Unchanged |
| Danske Bank A/S | 1 | $6 | 0.00% | 00.0% | Unchanged |
| Kerr Financial Planning Corp | 600 | $0 | 0.00% | +600 | New |
| Millennium Management LLC | 0 | $0 | 0.00% | −51,268−100.0% | Sold out |
| Monaco Asset Management SAM | 0 | $0 | 0.00% | −50,919−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −24,698−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −20,353−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −15,510−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −1,035−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −324−100.0% | Sold out |
| Barclays PLC | 0 | $0 | 0.00% | −19−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |