GH Research PLC - GHRS
Detailed investor-level table based on 13F positions.
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 | 10,763,288 | 151,331 | 23.92% | 26.75% | 1 | +356,713 | 3.43% | Q1 2026 | May 01, 2026 |
| BVF INC/IL | History | Reduced | 8,650,158 | 121,621 | 3.87% | 3.77% | 2 | -177,554 | -2.01% | Q1 2026 | May 15, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | History | No change | 7,676,697 | 107,934 | 1.14% | 1.0% | 3 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| RTW INVESTMENTS, LP | History | No change | 5,933,815 | 83,429 | 0.83% | 0.75% | 4 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| FMR LLC | History | No change | 5,136,045 | 72,212 | 0.0% | 0.0% | 5 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Avoro Capital Advisors LLC | History | No change | 1,800,000 | 25,308 | 0.25% | 0.22% | 6 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| TORONTO DOMINION BANK | History | New | 1,397,873 | 19,654 | 0.03% | — | 7 | +1,397,873 | New | Q1 2026 | May 15, 2026 |
| Troluce Capital Advisors LLC | History | Added to | 990,472 | 13,926 | 0.85% | 3.01% | 8 | +617,260 | 165.39% | Q1 2026 | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Added to | 937,898 | 13,186 | 0.01% | 0.0% | 9 | +641,972 | 216.94% | Q1 2026 | May 15, 2026 |
| Jefferies Financial Group Inc. | History | No change | 712,300 | 10,014 | 0.07% | 0.05% | 10 | 0 | 0.0% | Q1 2026 | May 07, 2026 |
| 5AM Venture Management, LLC | History | No change | 572,665 | 8,051 | 2.24% | 2.29% | 11 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| BlackRock, Inc. | History | Added to | 455,618 | 6,405 | 0.0% | 0.0% | 12 | +21,217 | 4.88% | Q1 2026 | May 13, 2026 |
| UBS Group AG | History | Added to | 412,416 | 5,798 | 0.0% | 0.0% | 13 | +49,035 | 13.49% | Q1 2026 | May 05, 2026 |
| Squadron Capital Management LLC | History | Added to | 325,000 | 4,569 | 1.67% | 1.7% | 14 | +10,000 | 3.17% | Q1 2026 | May 15, 2026 |
| Foresite Capital Management VI LLC | History | New | 315,492 | 4,435 | 0.96% | — | 15 | +315,492 | New | Q1 2026 | May 15, 2026 |
| BOOTHBAY FUND MANAGEMENT, LLC | History | Added to | 282,891 | 3,977 | 0.05% | 0.02% | 16 | +170,707 | 152.17% | Q1 2026 | May 15, 2026 |
| CenterBook Partners LP | History | Reduced | 216,574 | 3,045 | 0.16% | 0.18% | 17 | -66,867 | -23.59% | Q1 2026 | May 05, 2026 |
| HighVista Strategies LLC | History | Reduced | 213,212 | 2,997 | 0.83% | 0.79% | 18 | -27,312 | -11.36% | Q1 2026 | May 15, 2026 |
| MARSHALL WACE, LLP | History | Reduced | 91,108 | 1,280 | 0.0% | 0.0% | 19 | -149,656 | -62.16% | Q1 2026 | May 14, 2026 |
| Occam Crest Management LP | History | New | 80,000 | 1,124 | 0.68% | — | 20 | +80,000 | New | Q1 2026 | May 15, 2026 |
| Trexquant Investment LP | History | Added to | 69,808 | 981 | 0.01% | 0.01% | 21 | +15,032 | 27.44% | Q1 2026 | May 15, 2026 |
| AdvisorShares Investments LLC | History | Reduced | 67,034 | 942 | 0.17% | 0.14% | 22 | -78 | -0.12% | Q1 2026 | Apr 28, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 65,464 | 920 | 0.0% | 0.0% | 23 | +26,906 | 69.78% | Q1 2026 | May 15, 2026 |
| XTX Topco Ltd | History | Added to | 52,090 | 732 | 0.01% | 0.01% | 24 | +7,644 | 17.2% | Q1 2026 | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | History | Reduced | 44,795 | 629 | 0.0% | 0.0% | 25 | -36,191 | -44.69% | Q1 2026 | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 40,483 | 569 | 0.0% | 0.0% | 26 | +4,838 | 13.57% | Q1 2026 | May 15, 2026 |
| NORTHERN TRUST CORP | History | Reduced | 32,685 | 459 | 0.0% | 0.0% | 27 | -143 | -0.44% | Q1 2026 | May 14, 2026 |
| DIADEMA PARTNERS LP | History | New | 26,836 | 377 | 0.06% | — | 28 | +26,836 | New | Q1 2026 | May 15, 2026 |
| MORGAN STANLEY | History | Reduced | 25,830 | 363 | 0.0% | 0.0% | 29 | -25,574 | -49.75% | Q1 2026 | May 15, 2026 |
| Virtus Investment Advisers, LLC | History | Added to | 20,920 | 294 | 0.08% | 0.07% | 30 | +512 | 2.51% | Q1 2026 | May 14, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | New | 20,614 | 289 | 0.0% | — | 31 | +20,614 | New | Q1 2026 | May 14, 2026 |
| TUDOR INVESTMENT CORP ET AL | History | New | 18,560 | 260 | 0.0% | — | 32 | +18,560 | New | Q1 2026 | May 15, 2026 |
| JPMORGAN CHASE & CO | History | Reduced | 18,853 | 245 | 0.0% | 0.0% | 33 | -28 | -0.15% | Q1 2026 | May 13, 2026 |
| HighTower Advisors, LLC | History | No change | 15,600 | 219 | 0.0% | 0.0% | 34 | 0 | 0.0% | Q1 2026 | May 05, 2026 |
| China Universal Asset Management Co., Ltd. | History | Added to | 13,507 | 189 | 0.01% | 0.01% | 35 | +3,400 | 33.64% | Q1 2026 | Apr 27, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Reduced | 11,200 | 157 | 0.0% | 0.0% | 36 | -91,077 | -89.05% | Q1 2026 | May 15, 2026 |
| STATE STREET CORP | History | Added to | 11,049 | 155 | 0.0% | 0.0% | 37 | +228 | 2.11% | Q1 2026 | May 15, 2026 |
| Lion Point Capital, LP | History | No change | 10,200 | 143 | 0.85% | 0.67% | 38 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Persistent Asset Partners Ltd | History | New | 6,794 | 95 | 0.04% | — | 39 | +6,794 | New | Q1 2026 | May 12, 2026 |
| OSAIC HOLDINGS, INC. | History | Reduced | 5,925 | 83 | 0.0% | 0.0% | 40 | -4,100 | -40.9% | Q1 2026 | May 15, 2026 |
| BARCLAYS PLC | History | Added to | 4,394 | 61 | 0.0% | 0.0% | 41 | +2,276 | 107.46% | Q1 2026 | May 14, 2026 |
| Mirae Asset Global Investments Co., Ltd. | History | Added to | 3,235 | 45 | 0.0% | 0.0% | 42 | +221 | 7.33% | Q1 2026 | May 04, 2026 |
| ROYAL BANK OF CANADA | History | Added to | 2,590 | 36 | 0.0% | 0.0% | 43 | +780 | 43.09% | Q1 2026 | May 15, 2026 |
| North Star Investment Management Corp. | History | New | 2,200 | 30 | 0.0% | — | 44 | +2,200 | New | Q1 2026 | Apr 23, 2026 |
| CITIGROUP INC | History | Reduced | 1,733 | 24 | 0.0% | 0.0% | 45 | -2,671 | -60.65% | Q1 2026 | May 11, 2026 |
| GF FUND MANAGEMENT CO. LTD. | History | Added to | 1,384 | 19 | 0.0% | 0.0% | 46 | +166 | 13.63% | Q1 2026 | Apr 15, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Reduced | 1,310 | 18 | 0.0% | 0.0% | 47 | -27 | -2.02% | Q1 2026 | May 12, 2026 |
| Arkos Global Advisors | History | New | 1,180 | 17 | 0.0% | — | 49 | +1,180 | New | Q1 2026 | May 13, 2026 |
| WELLS FARGO & COMPANY/MN | History | No change | 1,250 | 17 | 0.0% | 0.0% | 48 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| Tower Research Capital LLC (TRC) | History | Reduced | 665 | 9 | 0.0% | 0.0% | 50 | -105 | -13.64% | Q1 2026 | May 15, 2026 |
| Global Retirement Partners, LLC | History | No change | 400 | 5 | 0.0% | 0.0% | 51 | 0 | 0.0% | Q4 2025 | Feb 06, 2026 |
| Ancora Advisors LLC | History | New | 284 | 3 | 0.0% | — | 52 | +284 | New | Q1 2026 | May 15, 2026 |
| SIMPLEX TRADING, LLC | History | Reduced | 183 | 2 | 0.0% | 0.0% | 53 | -165 | -47.41% | Q1 2026 | May 14, 2026 |
| Farther Finance Advisors, LLC | History | New | 100 | 1 | 0.0% | — | 55 | +100 | New | Q1 2026 | Apr 07, 2026 |
| GROUP ONE TRADING LLC | History | No change | 100 | 1 | 0.0% | 0.0% | 54 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Cormorant Asset Management, LP | History | Closed out | 0 | 0 | — | 0.76% | — | -1,300,000 | -100.0% | Q1 2026 | May 15, 2026 |
| Verition Fund Management LLC | History | Closed out | 0 | 0 | — | 0.03% | — | -673,735 | -100.0% | Q1 2026 | May 15, 2026 |
| Alyeska Investment Group, L.P. | History | Closed out | 0 | 0 | — | 0.01% | — | -204,975 | -100.0% | Q1 2026 | May 15, 2026 |
| JANE STREET GROUP, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -71,805 | -100.0% | Q1 2026 | May 12, 2026 |
| BIT Capital GmbH | History | Closed out | 0 | 0 | — | 0.02% | — | -50,000 | -100.0% | Q1 2026 | May 13, 2026 |
| GSA CAPITAL PARTNERS LLP | History | Closed out | 0 | 0 | — | 0.02% | — | -18,565 | -100.0% | Q1 2026 | May 08, 2026 |
| HRT FINANCIAL LP | History | Closed out | 0 | 0 | — | 0.0% | — | -15,936 | -100.0% | Q1 2026 | May 14, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Closed out | 0 | 0 | — | 0.0% | — | -4,450 | -100.0% | Q1 2026 | May 15, 2026 |
| Daiwa Securities Group Inc. | History | Closed out | 0 | 0 | — | 0.0% | — | -207 | -100.0% | Q1 2026 | May 13, 2026 |
| Cornerstone Financial Management LLC | History | New | 32 | 0 | — | — | — | +32 | New | Q1 2026 | May 08, 2026 |
| SBI Securities Co., Ltd. | History | No change | 20 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Apr 27, 2026 |