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Disclosery

QTTB Q32 BIO INC

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Common Stock (common), issuer CIK 1661998

52 managers (52 13F filers) reported a position in QTTB shares at 2025-12-31, 8,043,910 shares in all. 7 filers opened a position and 8 filers sold out during the quarter.

Managers
52
13F filers
52
New
7
Added
9
Reduced
20
Sold out
8
Shares held by filers
8,043,910

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC2,252,987$7.48M0.15%013F-HRTimelineGroup
Atlas Venture Life Science Advisors, LLC2,092,106$6.95M0.8%013F-HRTimeline
Carlyle Group Inc.in group Carlyle Group Inc.1,102,741$3.62M0.03%013F-HRTimelineGroup
ACORN CAPITAL ADVISORS, LLC493,425$1.64M0.56%-310,00013F-HRTimeline
VANGUARD GROUP INCin group VANGUARD GROUP INC321,051$1.07M<0.01%+25,64213F-HRTimelineGroup
ARCH Venture Management, LLC320,482$1.06M0.16%013F-HRTimeline
Pfizer Inc277,777$922K0.39%013F-HRTimeline
Sanofi244,083$810K0.26%013F-HRTimeline
Opaleye Management Inc.213,363$708K0.09%new13F-HR/ATimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC106,113$352K<0.01%+17,61713F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC99,600$331K<0.01%+52,30013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.59,932$199K<0.01%-33,07313F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC51,268$170K<0.01%-53,50413F-HRTimelineGroup
Monaco Asset Management SAM50,919$169K0.05%-260,21813F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC48,373$159K<0.01%+18,63413F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP46,825$155K<0.01%+15,31913F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC45,728$152K<0.01%+35,61113F-HRTimelineGroup
Affinity Asset Advisors, LLC27,777$92.2K0.01%013F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC25,374$84.2K<0.01%new13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP25,033$83.1K<0.01%-6,92013F-HRTimelineGroup
HRT FINANCIAL LP24,698$81K<0.01%+9,86213F-HRTimeline
STATE STREET CORPin group STATE STREET CORP21,237$70.5K<0.01%013F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd20,353$67.6K<0.01%new13F-HRTimelineGroup
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC20,000$66.4K<0.01%new13F-HR/ATimelineGroup
Scientech Research LLC15,510$51.5K0.03%new13F-HRTimeline
UBS Group AGin group UBS Group AG13,606$45.2K<0.01%+8,36013F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY5,478$18.2K<0.01%-5,86513F-HR/ATimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…4,640$15.4K<0.01%-38513F-HRTimelineGroup
FMR LLCin group FMR LLC3,364$11.2K<0.01%-12,50313F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.2,273$7.55K<0.01%-10113F-HRTimelineGroup
Global Retirement Partners, LLC1,500$4.98K<0.01%-3,50013F-HRTimeline
Arax Advisory Partners1,111$3.69K<0.01%-10413F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/1,035$3.44K<0.01%-49013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…976$3.24K<0.01%-5,50613F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…577$1.92K<0.01%013F-HR/ATimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP500$1.66K<0.01%new13F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…454$1.51K<0.01%013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO324$1.08K<0.01%+32013F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS308$1.02K<0.01%-12413F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA235$1K<0.01%-81813F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC166$551<0.01%013F-HRTimeline
SBI Securities Co., Ltd.157$521<0.01%-7,99913F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.132$437<0.01%-5513F-HRTimelineGroup
Allworth Financial LP98$326<0.01%-51213F-HRTimeline
Federation des caisses Desjardins du Qu…70$231<0.01%013F-HRTimeline
GROUP ONE TRADING LLC34$113<0.01%013F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…30$100<0.01%new13F-HR/ATimelineGroup
BARCLAYS PLCin group BARCLAYS PLC19$63<0.01%-80313F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.11$37<0.01%013F-HRTimeline
AdvisorNet Financial, Inc2$7<0.01%013F-HRTimeline
DANSKE BANK A/S1$3<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC54$00%-16513F-HRTimelineGroupValue filed as zero, left out of ratios.

Events

  • Frazier Life Sciences Public Fund, L.P. and 8 other reporting persons reported 1,755,116 QTTB shares, 5.9% of the class, as of 2026-10-02, in a 13G filed 2026-10-09. 0001231919-26-001441

    Accepted , ingested