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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, Q3 2025

Institutional positions in Q32 Bio Inc. as of Sep 30, 2025. 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
53
−8 vs. Q2 2025
Shares held
8.43M
−549.9K (−6.1%) vs. Q2 2025
Total value
$16.6M
+$3.28M (+24.5%) vs. Q2 2025
New holders
8
10 more added
Sold out
16
18 more reduced

Compare with Q2 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.

Institutional holdersQ3 2025: 53 institutions
Q1 2021: 109 institutionsQ2 2021: 118 institutionsQ3 2021: 119 institutionsQ4 2021: 121 institutionsQ1 2022: 107 institutionsQ2 2022: 87 institutionsQ3 2022: 83 institutionsQ4 2022: 79 institutionsQ1 2023: 62 institutionsQ2 2023: 59 institutionsQ3 2023: 58 institutionsQ4 2023: 58 institutionsQ1 2024: 39 institutionsQ2 2024: 54 institutionsQ3 2024: 73 institutionsQ4 2024: 92 institutionsQ1 2025: 73 institutionsQ2 2025: 61 institutionsQ3 2025: 53 institutionsQ4 2025: 52 institutionsQ1 2026: 54 institutionsQ2 2026: 72 institutions
Value heldQ3 2025: $16.6M
Q1 2021: $272.7MQ2 2021: $239.9MQ3 2021: $252.1MQ4 2021: $123.0MQ1 2022: $89.7MQ2 2022: $49.9MQ3 2022: $38.7MQ4 2022: $27.3MQ1 2023: $20.0MQ2 2023: $15.9MQ3 2023: $20.8MQ4 2023: $11.4MQ1 2024: $125.9MQ2 2024: $144.2MQ3 2024: $405.8MQ4 2024: $37.8MQ1 2025: $15.5MQ2 2025: $13.4MQ3 2025: $16.6MQ4 2025: $26.7MQ1 2026: $60.6MQ2 2026: $282.6M
Institutions holding QTTB and their total value by quarter
QuarterHoldersValue
Q2 202672$282.6M
Q1 202654$60.6M
Q4 202552$26.7M
Q3 202553$16.6M
Q2 202561$13.4M
Q1 202573$15.5M
Q4 202492$37.8M
Q3 202473$405.8M
Q2 202454$144.2M
Q1 202439$125.9M
Q4 202358$11.4M
Q3 202358$20.8M
Q2 202359$15.9M
Q1 202362$20.0M
Q4 202279$27.3M
Q3 202283$38.7M
Q2 202287$49.9M
Q1 2022107$89.7M
Q4 2021121$123.0M
Q3 2021119$252.1M
Q2 2021118$239.9M
Q1 2021109$272.7M

Institutions, Q3 2025

Shares, value and share of portfolio for each institution holding Q32 Bio Inc.; share changes are against Q2 2025.

Institutions holding QTTB in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
CWM, LLC219$00.00%−4,550−95.4%Reduced
Danske Bank A/S1$20.00%00.0%Unchanged
AdvisorNet Financial, Inc2$40.00%00.0%Unchanged
JPMorgan Chase & Co4$80.00%+4New
Harbour Investments, Inc.11$220.00%00.0%Unchanged
St Germain D J Co Inc11$220.00%00.0%Unchanged
Group One Trading, L.P.34$670.00%+34New
Federation des caisses Desjardins du Quebec70$1370.00%00.0%Unchanged
Nisa Investment Advisors, LLC166$3290.00%−423−71.8%Reduced
Advisor Group Holdings, Inc.187$3670.00%+8+4.5%Added
GF Fund Management Co. Ltd.227$4490.00%−37−14.0%Reduced
Citigroup Inc236$4670.00%−1,586−87.0%Reduced
BNP Paribas Arbitrage, SA432$8550.00%+29+7.2%Added
Russell Investments Group, Ltd.454$8990.00%00.0%Unchanged
Mirae Asset Global Investments Co., Ltd.472$9350.00%+1+0.2%Added
Rockefeller Capital Management L.P.577$1.14K0.00%+577New
Allworth Financial LP610$1.21K0.00%+594+3,712.5%Added
Barclays PLC822$1.63K0.00%−231−21.9%Reduced
Royal Bank of Canada1,053$2.00K0.00%−5,265−83.3%Reduced
SRS Capital Advisors, Inc.1,215$2.40K0.00%+104+9.4%Added
Bank of America Corp1,525$3.02K0.00%−673−30.6%Reduced
China Universal Asset Management Co., Ltd.2,138$4.23K0.00%−312−12.7%Reduced
Federated Hermes, Inc.2,374$4.70K0.00%−78−3.2%Reduced
Global Retirement Partners, LLC5,000$9.90K0.00%+5,000New
EverSource Wealth Advisors, LLC5,025$9.95K0.00%−276−5.2%Reduced
UBS Group AG5,246$10.4K0.00%−7,330−58.3%Reduced
Tower Research Capital LLC (TRC)6,482$12.8K0.00%+230+3.7%Added
SBI Securities Co., Ltd.8,156$16.1K0.00%+10.0%Added
Citadel Advisors LLC10,117$20.0K0.00%+10,117New
DLK Investment Management, LLC10,333$20.5K0.01%00.0%Unchanged
Morgan Stanley11,343$22.5K0.00%−7,305−39.2%Reduced
Two Sigma Securities, LLC13,749$27.2K0.00%+13,749New
HRT Financial LP14,836$29.0K0.00%+14,836New
FMR LLC15,867$31.4K0.00%−26,572−62.6%Reduced
State Street Corp21,237$42.0K0.00%−5,700−21.2%Reduced
Affinity Asset Advisors, LLC27,777$55.0K0.01%00.0%Unchanged
Acadian Asset Management LLC29,739$58.0K0.00%00.0%Unchanged
Two Sigma Investments, LP31,506$62.4K0.00%+31,506New
Northern Trust Corp31,953$63.3K0.00%+5,895+22.6%Added
Renaissance Technologies LLC47,300$93.7K0.00%−29,700−38.6%Reduced
Geode Capital Management, LLC88,496$175.3K0.00%+26,897+43.7%Added
BlackRock, Inc.93,005$184.2K0.00%−85,672−47.9%Reduced
Millennium Management LLC104,772$207.4K0.00%−25,607−19.6%Reduced
Trustees of Columbia University in the City of New York133,903$265.1K0.04%00.0%Unchanged
Sanofi244,083$483.3K0.19%00.0%Unchanged
Pfizer Inc277,777$550.0K0.13%00.0%Unchanged
Vanguard Group Inc295,409$584.9K0.00%+25,980+9.6%Added
Monaco Asset Management SAM311,137$616.1K0.23%−280,800−47.4%Reduced
ARCH Venture Management, LLC320,482$634.6K0.13%00.0%Unchanged
Acorn Capital Advisors, LLC803,425$1.59M0.81%00.0%Unchanged
Carlyle Group Inc.1,102,741$2.13M0.05%00.0%Unchanged
Atlas Venture Life Science Advisors, LLC2,092,106$4.14M0.55%00.0%Unchanged
OrbiMed Advisors LLC2,252,987$4.46M0.11%00.0%Unchanged
Goldman Sachs Group Inc0$00.00%−63,539−100.0%Sold out
Jane Street Group, LLC0$00.00%−46,635−100.0%Sold out
AQR Capital Management LLC0$00.00%−26,530−100.0%Sold out
Marshall Wace, LLP0$00.00%−16,928−100.0%Sold out
Oppenheimer & Co Inc0$00.00%−13,000−100.0%Sold out
Susquehanna International Group, LLP0$00.00%−12,909−100.0%Sold out
Mariner, LLC0$00.00%−11,780−100.0%Sold out
Raymond James Financial Inc0$00.00%−10,746−100.0%Sold out
Simplex Trading, LLC0$00.00%−813−100.0%Sold out
Clark Wealth Partners0$00.00%−199−100.0%Sold out
Wells Fargo & Company0$00.00%−139−100.0%Sold out
True Wealth Design, LLC0$00.00%−67−100.0%Sold out
CBIZ Investment Advisory Services, LLC0$00.00%−5−100.0%Sold out
Essential Partners LLC0$00.00%−5−100.0%Sold out
Caitong International Asset Management Co., Ltd0$00.00%−2−100.0%Sold out
National Bank of Canada0$00.00%−1−100.0%Sold out