GH Research PLC - GHRS
Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 2 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lynx1 Capital Management LP | History | Added to | 10,406,575 | 132,163 | 26.75% | 21.23% | 1 | +1,805,386 | 20.99% | Q4 2025 | Feb 17, 2026 |
| BVF INC/IL | History | No change | 8,827,712 | 112,111 | 3.77% | 5.12% | 2 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | History | No change | 7,676,697 | 97,494 | 1.0% | 1.35% | 3 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| RTW INVESTMENTS, LP | History | New | 5,933,815 | 75,359 | 0.75% | — | 4 | +5,933,815 | New | Q4 2025 | Feb 17, 2026 |
| FMR LLC | History | Reduced | 5,136,045 | 65,227 | 0.0% | 0.0% | 5 | -191,000 | -3.59% | Q4 2025 | Feb 17, 2026 |
| Avoro Capital Advisors LLC | History | New | 1,800,000 | 22,860 | 0.22% | — | 6 | +1,800,000 | New | Q4 2025 | Mar 13, 2026 |
| Cormorant Asset Management, LP | History | Reduced | 1,300,000 | 16,510 | 0.76% | 1.89% | 7 | -616,439 | -32.17% | Q4 2025 | Feb 17, 2026 |
| Jefferies Financial Group Inc. | History | Added to | 712,300 | 9,046 | 0.05% | 0.05% | 8 | +2,988 | 0.42% | Q4 2025 | Feb 09, 2026 |
| Verition Fund Management LLC | History | Reduced | 673,735 | 8,556 | 0.03% | 0.04% | 9 | -4,754 | -0.7% | Q4 2025 | Feb 13, 2026 |
| 5AM Venture Management, LLC | History | No change | 572,665 | 7,272 | 2.29% | 3.0% | 10 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| BlackRock, Inc. | History | Added to | 434,401 | 5,516 | 0.0% | 0.0% | 11 | +376,542 | 650.79% | Q4 2025 | Feb 12, 2026 |
| Troluce Capital Advisors LLC | History | Added to | 373,212 | 4,739 | 3.01% | 0.09% | 12 | +326,490 | 698.79% | Q4 2025 | Feb 17, 2026 |
| UBS Group AG | History | Reduced | 363,381 | 4,614 | 0.0% | 0.0% | 13 | -148,083 | -28.95% | Q4 2025 | Jan 29, 2026 |
| Squadron Capital Management LLC | History | New | 315,000 | 4,000 | 1.7% | — | 14 | +315,000 | New | Q4 2025 | Feb 17, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Reduced | 295,926 | 3,758 | 0.0% | 0.01% | 15 | -567,676 | -65.73% | Q4 2025 | Feb 17, 2026 |
| CenterBook Partners LP | History | Added to | 283,441 | 3,599 | 0.18% | 0.12% | 16 | +117,288 | 70.59% | Q4 2025 | Feb 11, 2026 |
| MARSHALL WACE, LLP | History | Added to | 240,764 | 3,057 | 0.0% | 0.0% | 17 | +71,264 | 42.04% | Q4 2025 | Feb 13, 2026 |
| HighVista Strategies LLC | History | Reduced | 240,524 | 3,054 | 0.79% | 0.85% | 18 | -1,370 | -0.57% | Q4 2025 | Feb 17, 2026 |
| Alyeska Investment Group, L.P. | History | No change | 204,975 | 2,603 | 0.01% | 0.01% | 19 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| BOOTHBAY FUND MANAGEMENT, LLC | History | Added to | 112,184 | 1,424 | 0.02% | 0.02% | 20 | +28,634 | 34.27% | Q4 2025 | Feb 17, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Added to | 102,277 | 1,298 | 0.0% | 0.0% | 21 | +75,777 | 285.95% | Q4 2025 | Feb 17, 2026 |
| GOLDMAN SACHS GROUP INC | History | Added to | 80,986 | 1,028 | 0.0% | 0.0% | 22 | +69,911 | 631.25% | Q4 2025 | Mar 25, 2026 |
| JANE STREET GROUP, LLC | History | Added to | 71,805 | 911 | 0.0% | 0.0% | 23 | +48,801 | 212.14% | Q4 2025 | Feb 12, 2026 |
| AdvisorShares Investments LLC | History | Added to | 67,112 | 852 | 0.14% | 0.13% | 24 | +13,121 | 24.3% | Q4 2025 | Feb 10, 2026 |
| Trexquant Investment LP | History | New | 54,776 | 695 | 0.01% | — | 25 | +54,776 | New | Q4 2025 | Feb 17, 2026 |
| MORGAN STANLEY | History | Added to | 51,404 | 652 | 0.0% | 0.0% | 26 | +47,162 | 1111.79% | Q4 2025 | Feb 13, 2026 |
| BIT Capital GmbH | History | New | 50,000 | 635 | 0.02% | — | 27 | +50,000 | New | Q4 2025 | Feb 11, 2026 |
| XTX Topco Ltd | History | New | 44,446 | 564 | 0.01% | — | 28 | +44,446 | New | Q4 2025 | Feb 17, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 38,558 | 489 | 0.0% | 0.0% | 29 | -55,844 | -59.16% | Q4 2025 | Feb 17, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | No change | 35,645 | 452 | 0.0% | 0.0% | 30 | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| NORTHERN TRUST CORP | History | Reduced | 32,828 | 416 | 0.0% | 0.0% | 31 | -145 | -0.44% | Q4 2025 | Feb 17, 2026 |
| Virtus Investment Advisers, LLC | History | Added to | 20,408 | 259 | 0.07% | 0.04% | 32 | +11,539 | 130.1% | Q4 2025 | Feb 17, 2026 |
| JPMORGAN CHASE & CO | History | Added to | 18,881 | 239 | 0.0% | 0.0% | 33 | +4,981 | 35.83% | Q4 2025 | Feb 11, 2026 |
| GSA CAPITAL PARTNERS LLP | History | New | 18,565 | 236 | 0.02% | — | 34 | +18,565 | New | Q4 2025 | Feb 06, 2026 |
| HRT FINANCIAL LP | History | New | 15,936 | 202 | 0.0% | — | 35 | +15,936 | New | Q4 2025 | Feb 12, 2026 |
| HighTower Advisors, LLC | History | Reduced | 15,600 | 198 | 0.0% | 0.0% | 36 | -500 | -3.11% | Q4 2025 | Feb 06, 2026 |
| STATE STREET CORP | History | Reduced | 10,821 | 137 | 0.0% | 0.0% | 37 | -171 | -1.56% | Q4 2025 | Feb 13, 2026 |
| Lion Point Capital, LP | History | New | 10,200 | 129 | 0.67% | — | 38 | +10,200 | New | Q4 2025 | Feb 17, 2026 |
| China Universal Asset Management Co., Ltd. | History | New | 10,107 | 128 | 0.01% | — | 39 | +10,107 | New | Q4 2025 | Jan 29, 2026 |
| OSAIC HOLDINGS, INC. | History | Reduced | 10,025 | 127 | 0.0% | 0.0% | 40 | -100 | -0.99% | Q4 2025 | Feb 17, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Added to | 4,450 | 56 | 0.0% | 0.0% | 41 | +4,175 | 1518.18% | Q4 2025 | Feb 17, 2026 |
| CITIGROUP INC | History | Added to | 4,404 | 55 | 0.0% | — | 42 | +4,373 | 14106.45% | Q4 2025 | Feb 13, 2026 |
| Mirae Asset Global Investments Co., Ltd. | History | New | 3,014 | 38 | 0.0% | — | 43 | +3,014 | New | Q4 2025 | Jan 26, 2026 |
| BARCLAYS PLC | History | Added to | 2,118 | 26 | 0.0% | 0.0% | 44 | +822 | 63.43% | Q4 2025 | Feb 13, 2026 |
| ROYAL BANK OF CANADA | History | New | 1,810 | 23 | 0.0% | — | 45 | +1,810 | New | Q4 2025 | Feb 17, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Reduced | 1,337 | 16 | 0.0% | 0.0% | 46 | -4,865 | -78.44% | Q4 2025 | Feb 10, 2026 |
| GF FUND MANAGEMENT CO. LTD. | History | New | 1,218 | 15 | 0.0% | — | 48 | +1,218 | New | Q4 2025 | Jan 27, 2026 |
| WELLS FARGO & COMPANY/MN | History | No change | 1,250 | 15 | 0.0% | 0.0% | 47 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Tower Research Capital LLC (TRC) | History | New | 770 | 9 | 0.0% | — | 49 | +770 | New | Q4 2025 | Feb 17, 2026 |
| Global Retirement Partners, LLC | History | Reduced | 400 | 5 | 0.0% | 0.0% | 50 | -400 | -50.0% | Q4 2025 | Feb 06, 2026 |
| SIMPLEX TRADING, LLC | History | Reduced | 348 | 4 | 0.0% | 0.0% | 51 | -18,561 | -98.16% | Q4 2025 | Feb 11, 2026 |
| Daiwa Securities Group Inc. | History | New | 207 | 3 | 0.0% | — | 52 | +207 | New | Q4 2025 | Feb 11, 2026 |
| GROUP ONE TRADING LLC | History | Reduced | 100 | 1 | 0.0% | 0.0% | 53 | -700 | -87.5% | Q4 2025 | Feb 12, 2026 |
| Deep Track Capital, LP | History | Closed out | 0 | 0 | — | 0.5% | — | -1,250,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| STEMPOINT CAPITAL LP | History | Closed out | 0 | 0 | — | 1.56% | — | -545,275 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Point72 Asset Management, L.P. | History | Closed out | 0 | 0 | — | 0.0% | — | -76,958 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Squarepoint Ops LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -36,103 | -100.0% | Q3 2025 | Nov 14, 2025 |
| TANG CAPITAL MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.01% | — | -24,030 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Man Group plc | History | Closed out | 0 | 0 | — | 0.0% | — | -22,060 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Farther Finance Advisors, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -200 | -100.0% | Q3 2025 | Oct 14, 2025 |
| SBI Securities Co., Ltd. | History | New | 20 | 0 | — | — | — | +20 | New | Q4 2025 | Feb 03, 2026 |