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Disclosery

QTTB Q32 BIO INC

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Common Stock (common), issuer CIK 1661998

69 managers (71 13F filers) reported a position in QTTB shares at 2026-06-30, 22,179,077 shares in all. 27 filers opened a position and 8 filers sold out during the quarter.

Managers
69
13F filers
71
New
27
Added
17
Reduced
14
Sold out
8
Shares held by filers
22,179,077

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

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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 LLC4,127,987$52.6M1%+1,875,00013F-HRTimelineGroup
Boxer Capital Management, LLC3,149,310$40.1M3.02%new13F-HRTimeline
Atlas Venture Life Science Advisors, LLC2,717,106$34.6M3.93%+625,00013F-HRTimeline
BVF INC/ILin group BVF INC/IL2,350,000$29.9M0.77%new13F-HRTimelineGroup
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.2,332,457$29.7M0.26%new13F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.1,173,396$14.9M0.02%new13F-HRTimelineGroup
Opaleye Management Inc.931,000$11.9M1.07%-325,22813F-HRTimeline
Logos Global Management LP800,000$10.2M0.44%new13F-HRTimeline
SummitTX Capital, L.P.733,774$9.35M0.25%new13F-HRTimeline
VANGUARD GROUP INCgroup of 3 filers holding589,844$7.51M+231,533Timeline
Ikarian Capital, LLC430,000$5.48M0.9%new13F-HRTimeline
Woodline Partners LP286,212$3.65M0.01%new13F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC272,752$3.47M<0.01%+253,98213F-HRTimelineGroup
Sanofi244,083$3.11M0.58%013F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC218,234$2.78M<0.01%+45,64813F-HRTimelineGroup
ACORN CAPITAL ADVISORS, LLC216,171$2.75M0.75%-98,88113F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC179,600$2.29M<0.01%-27,31513F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC162,747$2.07M<0.01%+97,14813F-HRTimelineGroup
MONIMUS CAPITAL MANAGEMENT, LP132,036$1.68M0.43%-2,27413F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC130,427$1.66M0.03%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC122,690$1.56M<0.01%+4,53813F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC120,663$1.54M<0.01%+105,18213F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.118,507$1.51M<0.01%+32,36013F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP67,045$854K<0.01%+14,60513F-HRTimelineGroup
Carlyle Group Inc.in group Carlyle Group Inc.60,363$769K0.01%-1,042,37813F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP52,214$665K<0.01%+10,70013F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP49,582$632K<0.01%+7,23613F-HRTimelineGroup
Quadrature Capital Ltdin group Quadrature Capital Ltd36,396$464K<0.01%new13F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC34,613$441K0.01%+22,00013F-HRTimeline
DAFNA Capital Management LLC32,896$419K0.08%new13F-HRTimeline
Knott David M Jr30,412$387K0.2%new13F-HRTimeline
Affinity Asset Advisors, LLC27,777$354K0.02%013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC23,790$303K<0.01%new13F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP23,631$301K<0.01%-1,40213F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP23,588$301K<0.01%new13F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…23,342$297K<0.01%new13F-HRTimelineGroup
MANGROVE PARTNERS IM, LLC22,150$282K0.02%new13F-HRTimeline
LPL Financial LLC18,170$231K<0.01%new13F-HRTimeline
Cambridge Investment Research Advisors,…18,081$230K<0.01%-16,94413F-HR/ATimeline
HRT FINANCIAL LP15,949$203K<0.01%new13F-HRTimeline
UBS Group AGin group UBS Group AG15,008$191K<0.01%+14,73813F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management12,342$157K<0.01%new13F-HRTimelineGroup
ExodusPoint Capital Management, LP11,336$144K<0.01%new13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC10,928$139K<0.01%new13F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd10,874$139K<0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY6,456$82.3K<0.01%-3,10413F-HRTimelineGroup
FMR LLCin group FMR LLC3,388$43.2K<0.01%-1213F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC2,888$36.8K<0.01%new13F-HRTimelineGroup
Private Wealth Asset Management, LLC1,700$21.7K<0.01%new13F-HRTimeline
Arax Advisory Partners1,111$14.2K<0.01%-3713F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.1,050$13.4K<0.01%-1,22313F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…577$7.35K<0.01%013F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP500$6.58K<0.01%013F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…454$5.78K<0.01%013F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS303$3.86K<0.01%013F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…240$3.06K<0.01%-4,40013F-HRTimelineGroup
NISA INVESTMENT ADVISORS, LLC166$2.12K<0.01%013F-HRTimeline
Truvestments Capital LLC162$2.06K<0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.124$1.58K<0.01%013F-HRTimelineGroup
Allworth Financial LP108$1.38K<0.01%+1013F-HRTimeline
SBI Securities Co., Ltd.94$1.2K<0.01%-1013F-HRTimeline
Federation des caisses Desjardins du Qu…70$888<0.01%013F-HRTimeline
Clearstead Advisors, LLC67$854<0.01%new13F-HRTimeline
Caitong International Asset Management …45$573<0.01%new13F-HRTimeline
GROUP ONE TRADING LLC34$433<0.01%013F-HRTimeline
HARBOUR INVESTMENTS, INC.11$140<0.01%013F-HRTimeline
AdvisorNet Financial, Inc2$25<0.01%013F-HRTimeline
DANSKE BANK A/S1$13<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA43$00%-2,70113F-HRTimelineGroupValue filed as zero, left out of ratios.