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; 71 institutions reported holding it in 13F filings for Q2 2026, worth $282.8M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Q32 Bio Inc. as of Jun 30, 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
- 71
- +19 vs. Q1 2026
- Shares held
- 22.2M
- +12.8M (+135.4%) vs. Q1 2026
- Total value
- $282.8M
- +$222.2M (+366.5%) vs. Q1 2026
- New holders
- 27
- 18 more added
- Sold out
- 8
- 13 more reduced
1 institution that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 | 71 | $282.8M |
| Q1 2026 | 53 | $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 | $406.0M |
| Q2 2024 | 54 | $144.2M |
| Q1 2024 | 38 | $125.9M |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Q32 Bio Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| OrbiMed Advisors LLC | 4,127,987 | $52.6M | 1.00% | +1,875,000+83.2% | Added |
| Boxer Capital Management, LLC | 3,149,310 | $40.1M | 3.02% | +3,149,310 | New |
| Atlas Venture Life Science Advisors, LLC | 2,717,106 | $34.6M | 3.93% | +625,000+29.9% | Added |
| BVF Inc | 2,350,000 | $29.9M | 0.77% | +2,350,000 | New |
| Ra Capital Management, L.P. | 2,332,457 | $29.7M | 0.26% | +2,332,457 | New |
| Point72 Asset Management, L.P. | 1,173,396 | $14.9M | 0.02% | +1,173,396 | New |
| Opaleye Management Inc. | 931,000 | $11.9M | 1.07% | −325,228−25.9% | Reduced |
| Logos Global Management LP | 800,000 | $10.2M | 0.44% | +800,000 | New |
| SummitTX Capital, L.P. | 733,774 | $9.35M | 0.25% | +733,774 | New |
| Vanguard Capital Management LLC | 518,803 | $6.61M | 0.00% | +212,402+69.3% | Added |
| Ikarian Capital, LLC | 430,000 | $5.48M | 0.90% | +430,000 | New |
| Woodline Partners LP | 286,212 | $3.65M | 0.01% | +286,212 | New |
| American Century Companies Inc | 272,752 | $3.47M | 0.00% | +253,982+1,353.1% | Added |
| Sanofi | 244,083 | $3.11M | 0.58% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 218,234 | $2.78M | 0.00% | +45,648+26.4% | Added |
| Acorn Capital Advisors, LLC | 216,171 | $2.75M | 0.75% | −98,881−31.4% | Reduced |
| Renaissance Technologies LLC | 179,600 | $2.29M | 0.00% | −27,315−13.2% | Reduced |
| Jane Street Group, LLC | 162,747 | $2.07M | 0.00% | +97,148+148.1% | Added |
| Monimus Capital Management, LP | 132,036 | $1.68M | 0.43% | −2,274−1.7% | Reduced |
| Boothbay Fund Management, LLC | 130,427 | $1.66M | 0.03% | +130,427 | New |
| Geode Capital Management, LLC | 122,690 | $1.56M | 0.00% | +4,538+3.8% | Added |
| Citadel Advisors LLC | 120,663 | $1.54M | 0.00% | +105,182+679.4% | Added |
| BlackRock, Inc. | 118,507 | $1.51M | 0.00% | +32,360+37.6% | Added |
| Marshall Wace, LLP | 67,045 | $854.2K | 0.00% | +14,605+27.9% | Added |
| Vanguard Fiduciary Trust Co | 66,217 | $843.6K | 0.00% | +16,222+32.4% | Added |
| Carlyle Group Inc. | 60,363 | $769.0K | 0.01% | −1,042,378−94.5% | Reduced |
| State Street Corp | 52,214 | $665.2K | 0.00% | +10,700+25.8% | Added |
| Two Sigma Investments, LP | 49,582 | $631.7K | 0.00% | +7,236+17.1% | Added |
| Quadrature Capital Ltd | 36,396 | $463.7K | 0.00% | +36,396 | New |
| Cambridge Investment Research Advisors, Inc. | 36,162 | $460.0K | 0.00% | +1,137+3.2% | Added |
| Bridgeway Capital Management, LLC | 34,613 | $441.0K | 0.01% | +22,000+174.4% | Added |
| DAFNA Capital Management LLC | 32,896 | $419.1K | 0.08% | +32,896 | New |
| Knott David M Jr | 30,412 | $387.4K | 0.20% | +30,412 | New |
| Affinity Asset Advisors, LLC | 27,777 | $353.9K | 0.02% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 23,790 | $303.1K | 0.00% | +23,790 | New |
| Northern Trust Corp | 23,631 | $301.1K | 0.00% | −1,402−5.6% | Reduced |
| Dimensional Fund Advisors LP | 23,588 | $300.5K | 0.00% | +23,588 | New |
| Susquehanna International Group, LLP | 23,342 | $297.4K | 0.00% | +23,342 | New |
| Mangrove Partners | 22,150 | $282.2K | 0.02% | +22,150 | New |
| LPL Financial LLC | 18,170 | $231.5K | 0.00% | +18,170 | New |
| HRT Financial LP | 15,949 | $203.0K | 0.00% | +15,949 | New |
| UBS Group AG | 15,008 | $191.2K | 0.00% | +14,738+5,458.5% | Added |
| Balyasny Asset Management LLC | 12,342 | $157.2K | 0.00% | +12,342 | New |
| ExodusPoint Capital Management, LP | 11,336 | $144.4K | 0.00% | +11,336 | New |
| Millennium Management LLC | 10,928 | $139.2K | 0.00% | +10,928 | New |
| XTX Topco Ltd | 10,874 | $138.5K | 0.00% | +10,874 | New |
| Morgan Stanley | 6,456 | $82.3K | 0.00% | −3,104−32.5% | Reduced |
| Vanguard Global Advisers, LLC | 4,824 | $61.5K | 0.00% | +2,909+151.9% | Added |
| FMR LLC | 3,388 | $43.2K | 0.00% | −12−0.4% | Reduced |
| Citigroup Inc | 2,888 | $36.8K | 0.00% | +2,888 | New |
| Private Wealth Asset Management, LLC | 1,700 | $21.7K | 0.00% | +1,700 | New |
| SRS Capital Advisors, Inc. | 1,111 | $14.2K | 0.00% | −37−3.2% | Reduced |
| Federated Hermes, Inc. | 1,050 | $13.4K | 0.00% | −1,223−53.8% | Reduced |
| Rockefeller Capital Management L.P. | 577 | $7.35K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 500 | $6.58K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 454 | $5.78K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 303 | $3.86K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 240 | $3.06K | 0.00% | −4,400−94.8% | Reduced |
| Nisa Investment Advisors, LLC | 166 | $2.12K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 162 | $2.06K | 0.00% | +162 | New |
| Advisor Group Holdings, Inc. | 124 | $1.58K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 108 | $1.38K | 0.00% | +10+10.2% | Added |
| SBI Securities Co., Ltd. | 94 | $1.20K | 0.00% | −10−9.6% | Reduced |
| Federation des caisses Desjardins du Quebec | 70 | $888 | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 67 | $854 | 0.00% | +67 | New |
| Caitong International Asset Management Co., Ltd | 45 | $573 | 0.00% | +45 | New |
| Group One Trading, L.P. | 34 | $433 | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 11 | $140 | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 2 | $25 | 0.00% | 00.0% | Unchanged |
| Danske Bank A/S | 1 | $13 | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 43 | $0 | 0.00% | −2,701−98.4% | Reduced |
| ARCH Venture Management, LLC | 0 | $0 | 0.00% | −320,482−100.0% | Sold out |
| Mackenzie Financial Corp | 0 | $0 | 0.00% | −246,304−100.0% | Sold out |
| Pfizer Inc | 0 | $0 | 0.00% | −101,618−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −35,000−100.0% | Sold out |
| Cetera Investment Advisers | 0 | $0 | 0.00% | −20,695−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −1,871−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −111−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −84−100.0% | Sold out |
| CWM, LLC | – | – | – | – | Not filed |