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Disclosery

GHRS GH RESEARCH PLC

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Stock (common), issuer CIK 1855129

63 managers (63 13F filers) reported a position in GHRS shares at 2026-06-30, 51,499,871 shares in all. 17 filers opened a position and 9 filers sold out during the quarter.

Managers
63
13F filers
63
New
17
Added
18
Reduced
16
Sold out
9
Shares held by filers
51,499,871

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
Lynx1 Capital Management LPin group Lynx1 Capital Management LP13,263,288$357M41.19%+2,500,00013F-HR/ATimelineGroup
BVF INC/ILin group BVF INC/IL8,650,158$233M5.95%013F-HRTimelineGroup
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.7,636,813$205M1.78%-39,88413F-HRTimelineGroup
FMR LLCin group FMR LLC5,977,045$161M0.01%+841,00013F-HRTimelineGroup
RTW INVESTMENTS, LP5,933,815$160M1.36%013F-HRTimeline
Deep Track Capital, LP3,333,334$89.6M1.32%new13F-HRTimeline
Avoro Capital Advisors LLC1,800,000$48.4M0.43%013F-HRTimeline
Foresite Capital Management VI LLCin group Foresite Capital Management V…940,493$25.3M3.93%+625,00113F-HRTimelineGroup
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.712,300$19.1M0.18%013F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.480,287$12.9M<0.01%+24,66913F-HRTimelineGroup
UBS Group AGin group UBS Group AG477,408$12.8M<0.01%+64,99213F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC323,399$8.69M0.01%-614,49913F-HRTimelineGroup
BRAIDWELL LP207,240$5.57M0.21%new13F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC202,103$5.43M0.1%-80,78813F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC169,951$4.57M<0.01%new13F-HRTimelineGroup
HighVista Strategies LLC158,770$4.27M0.97%-54,44213F-HRTimeline
Trexquant Investment LP153,767$4.13M0.03%+83,95913F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC148,673$4M<0.01%+103,87813F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd86,986$2.34M0.03%+34,89613F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC85,952$2.31M<0.01%+20,48813F-HRTimelineGroup
AdvisorShares Investments LLC71,267$1.92M0.23%+4,23313F-HRTimeline
CenterBook Partners LP69,436$1.87M0.09%-147,13813F-HRTimeline
HRT FINANCIAL LP65,375$1.76M<0.01%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY52,218$1.4M<0.01%+26,38813F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.50,882$1.37M<0.01%new13F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP46,697$1.26M<0.01%-44,41113F-HRTimelineGroup
Qube Research & Technologies Ltd43,948$1.18M<0.01%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC40,483$1.09M<0.01%013F-HRTimelineGroup
Axxion S.A.36,170$972K0.07%13F-HRTimeline
TUDOR INVESTMENT CORP ET AL34,278$921K<0.01%+15,71813F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP31,844$856K<0.01%-84113F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.25,345$681K<0.01%new13F-HRTimelineGroup
Quadrature Capital Ltdin group Quadrature Capital Ltd21,117$568K<0.01%new13F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO18,778$535K<0.01%-7513F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC18,430$495K<0.01%new13F-HRTimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…15,492$416K0.1%-5,42813F-HRTimelineGroup
LETKO, BROSSEAU & ASSOCIATES INC15,425$415K0.01%new13F-HRTimeline
China Universal Asset Management Co., L…13,419$361K0.02%-8813F-HRTimeline
HighTower Advisors, LLC12,700$341K<0.01%-2,90013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP11,163$300K<0.01%+11413F-HRTimelineGroup
Lion Point Capital, LP10,200$274K1.31%013F-HRTimeline
Eversept Partners, LP8,672$233K0.01%new13F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC7,847$216K<0.01%new13F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC5,977$161K<0.01%+1,58313F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA5,877$158K<0.01%+3,28713F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.5,775$155K<0.01%-15013F-HRTimelineGroup
SIMPLEX TRADING, LLC4,739$127K<0.01%+4,65613F-HRTimeline
Mirae Asset Global Investments Co., Ltd.in group Mirae Asset Global Investment…3,068$82.5K<0.01%-16713F-HRTimelineGroup
North Star Investment Management Corp.2,200$59.1K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS1,697$45.6K<0.01%+38713F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC1,614$43.4K<0.01%-11913F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.1,315$35.3K<0.01%-6913F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN1,250$33.6K<0.01%013F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP775$21.9K<0.01%new13F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.800$21.5K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…515$13.8K<0.01%-15013F-HRTimelineGroup
SBI Securities Co., Ltd.411$11K<0.01%+39113F-HRTimeline
Ancora Advisors LLCin group Ancora Advisors LLC284$7.63K<0.01%013F-HRTimelineGroup
HOLLENCREST CAPITAL MANAGEMENT250$6.72K<0.01%new13F-HRTimeline
Federation des caisses Desjardins du Qu…205$5.51K<0.01%new13F-HRTimeline
Farther Finance Advisors, LLC100$2.69K<0.01%013F-HRTimeline
Cornerstone Financial Management LLC32$860<0.01%013F-HR/ATimeline
Caitong International Asset Management …19$511<0.01%new13F-HRTimeline