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Disclosery

QTTB Q32 BIO INC

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Common Stock (common), issuer CIK 1661998

51 managers (53 13F filers) reported a position in QTTB shares at 2026-03-31, 9,428,899 shares in all. 8 filers opened a position and 8 filers sold out during the quarter.

Managers
51
13F filers
53
New
8
Added
14
Reduced
9
Sold out
8
Shares held by filers
9,428,899

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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$14.5M0.32%013F-HRTimelineGroup
Atlas Venture Life Science Advisors, LLC2,092,106$13.4M1.7%013F-HRTimeline
Opaleye Management Inc.1,256,228$8.06M1.06%+1,042,86513F-HRTimeline
Carlyle Group Inc.in group Carlyle Group Inc.1,102,741$7.08M0.07%013F-HRTimelineGroup
VANGUARD GROUP INCgroup of 3 filers holding358,311$2.3MnewTimeline
ARCH Venture Management, LLC320,482$2.06M0.3%013F-HRTimeline
ACORN CAPITAL ADVISORS, LLC315,052$2.02M0.57%-178,37313F-HRTimeline
MACKENZIE FINANCIAL CORP246,304$1.58M<0.01%new13F-HRTimeline
Sanofi244,083$1.57M0.47%013F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC206,915$1.33M<0.01%+107,31513F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC172,586$1.11M<0.01%+124,21313F-HRTimelineGroup
MONIMUS CAPITAL MANAGEMENT, LP134,310$862K0.24%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC118,152$759K<0.01%+12,03913F-HRTimelineGroup
Pfizer Inc101,618$737K0.31%-176,15913F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.86,147$553K<0.01%+26,21513F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC65,599$421K<0.01%+40,22513F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP52,440$337K<0.01%new13F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP42,346$272K<0.01%-4,47913F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP41,514$267K<0.01%+20,27713F-HRTimelineGroup
Cambridge Investment Research Advisors,…35,025$225K<0.01%new13F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC35,000$225K0.01%+15,00013F-HRTimelineGroup
Affinity Asset Advisors, LLC27,777$178K0.01%013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP25,033$161K<0.01%013F-HRTimelineGroup
Cetera Investment Advisers20,695$133K<0.01%new13F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC18,770$121K<0.01%new13F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC15,481$99.4K<0.01%-30,24713F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC12,613$81K<0.01%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY9,560$61.4K<0.01%+4,08213F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…4,640$29.8K<0.01%013F-HR/ATimelineGroup
FMR LLCin group FMR LLC3,400$21.8K<0.01%+3613F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,744$18K<0.01%+2,50913F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.2,273$14.6K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,871$12K<0.01%+89513F-HRTimelineGroup
Arax Advisory Partners1,148$7.37K<0.01%+3713F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…577$3.7K<0.01%013F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP500$3.62K<0.01%013F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…454$2.92K<0.01%013F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS303$1.95K<0.01%-513F-HRTimelineGroup
UBS Group AGin group UBS Group AG270$1.73K<0.01%-13,33613F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC166$1.07K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.124$796<0.01%-813F-HRTimelineGroup
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…111$713<0.01%+8113F-HRTimelineGroup
SBI Securities Co., Ltd.104$668<0.01%-5313F-HRTimeline
Allworth Financial LP98$630<0.01%013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN84$539<0.01%new13F-HR/ATimelineGroup
Federation des caisses Desjardins du Qu…70$446<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC39$250<0.01%-1513F-HRTimelineGroup
GROUP ONE TRADING LLC34$218<0.01%013F-HRTimeline
HARBOUR INVESTMENTS, INC.11$71<0.01%013F-HRTimeline
AdvisorNet Financial, Inc2$13<0.01%013F-HRTimeline
DANSKE BANK A/S1$6<0.01%013F-HRTimeline

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