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Disclosery

GHRS GH RESEARCH PLC

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Stock (common), issuer CIK 1855129

54 managers (54 13F filers) reported a position in GHRS shares at 2026-03-31, 47,551,029 shares in all. 12 filers opened a position and 10 filers sold out during the quarter.

Managers
54
13F filers
54
New
12
Added
19
Reduced
13
Sold out
10
Shares held by filers
47,551,029

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, 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
Lynx1 Capital Management LPin group Lynx1 Capital Management LP10,763,288$151M23.92%+356,71313F-HRTimelineGroup
BVF INC/ILin group BVF INC/IL8,650,158$122M3.87%-177,55413F-HRTimelineGroup
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.7,676,697$108M1.14%013F-HRTimelineGroup
RTW INVESTMENTS, LP5,933,815$83.4M0.83%013F-HRTimeline
FMR LLCin group FMR LLC5,136,045$72.2M<0.01%013F-HRTimelineGroup
Avoro Capital Advisors LLC1,800,000$25.3M0.25%013F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK1,397,873$19.7M0.04%new13F-HRTimelineGroup
Troluce Capital Advisors LLC990,472$13.9M1.47%+617,26013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC937,898$13.2M0.01%+641,97213F-HRTimelineGroup
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.712,300$10M0.12%013F-HRTimelineGroup
5AM Venture Management, LLC572,665$8.05M2.24%013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.455,618$6.41M<0.01%+21,21713F-HRTimelineGroup
UBS Group AGin group UBS Group AG412,416$5.8M<0.01%+49,03513F-HRTimelineGroup
Squadron Capital Management LLC325,000$4.57M1.83%+10,00013F-HRTimeline
Foresite Capital Management VI LLCin group Foresite Capital Management V…315,492$4.44M0.96%new13F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC282,891$3.98M0.09%+170,70713F-HRTimeline
CenterBook Partners LP216,574$3.05M0.16%-66,86713F-HRTimeline
HighVista Strategies LLC213,212$3M0.83%-27,31213F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP91,108$1.28M<0.01%-149,65613F-HRTimelineGroup
Occam Crest Management LP80,000$1.12M0.7%new13F-HRTimeline
Trexquant Investment LP69,808$982K0.01%+15,03213F-HRTimeline
AdvisorShares Investments LLC67,034$942K0.17%-7813F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC65,464$920K<0.01%+39,20613F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd52,090$732K0.01%+7,64413F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC44,795$630K<0.01%-36,19113F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC40,483$569K<0.01%+4,83813F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP32,685$460K<0.01%-14313F-HRTimelineGroup
DIADEMA PARTNERS LP26,836$377K0.16%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY25,830$363K<0.01%-25,57413F-HRTimelineGroup
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…20,920$294K0.08%+51213F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC20,614$290K<0.01%new13F-HRTimeline
TUDOR INVESTMENT CORP ET AL18,560$261K<0.01%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO18,853$246K<0.01%-2813F-HR/ATimelineGroup
HighTower Advisors, LLC15,600$219K<0.01%013F-HRTimeline
China Universal Asset Management Co., L…13,507$190K0.01%+3,40013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP11,049$155K<0.01%+22813F-HRTimelineGroup
Lion Point Capital, LP10,200$143K0.86%013F-HRTimeline
Persistent Asset Partners Ltd6,794$95.5K0.04%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.5,925$83.3K<0.01%-4,10013F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC4,394$61.8K<0.01%+2,27613F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.in group Mirae Asset Global Investment…3,235$45.5K<0.01%+22113F-HR/ATimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,590$36K<0.01%+78013F-HRTimelineGroup
North Star Investment Management Corp.2,200$30.9K<0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC1,733$24.4K<0.01%-2,67113F-HRTimelineGroup
GF FUND MANAGEMENT CO. LTD.1,384$19.5K<0.01%+16613F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS1,310$18.4K<0.01%-2713F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN1,250$17.6K<0.01%013F-HR/ATimelineGroup
Arkos Global Advisors1,180$17K<0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…665$9.35K<0.01%-10513F-HRTimelineGroup
Ancora Advisors LLCin group Ancora Advisors LLC284$3.99K<0.01%new13F-HRTimelineGroup
Farther Finance Advisors, LLC100$1.47K<0.01%new13F-HRTimeline
SIMPLEX TRADING, LLC83$1.17K<0.01%+3513F-HRTimeline
Cornerstone Financial Management LLC32$450<0.01%new13F-HR/ATimeline
SBI Securities Co., Ltd.20$281<0.01%013F-HRTimeline