GH RESEARCH PLC (GHRS)
Institutional ownership reported to the SEC as of Q2 2026, across 21 quarters.
65
Reporting holders
$1.4B
Reported value
82.9%
Of shares outstanding
0.1%
Held as options
+10
Holder change
Institutions report 51,440,890 shares against 62,029,395 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Share count carried from an earlier filing (concept 2025-12-31).
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Lynx1 Capital Management LP | $356.5M | 13,263,288 | 25.96% | 13q | +23.2%+$67.2M |
| BVF INC/IL | $232.5M | 8,650,158 | 5.95% | 21q | HELD |
| RA CAPITAL MANAGEMENT, L.P. | $205.3M | 7,636,813 | 1.78% | 21q | -0.5%-$1.1M |
| FMR LLC | $160.7M | 5,977,045 | 0.01% | 21q | +16.4%+$22.6M |
| RTW INVESTMENTS, LP | $159.5M | 5,933,815 | 1.36% | 21q | HELD |
| Deep Track Capital, LP | $89.6M | 3,333,334 | 1.30% | new | NEW |
| Avoro Capital Advisors LLC | $48.4M | 1,800,000 | 0.43% | 3q | HELD |
| Foresite Capital Management VI LLC | $25.3M | 940,493 | 3.93% | 2q | +198.1%+$16.8M |
| Jefferies Financial Group Inc. | $19.1M | 712,300 | 0.13% | 6q | HELD |
| BlackRock, Inc. | $12.9M | 480,287 | 0.00% | 8q | +5.4%+$663.1K |
| UBS Group AG | $12.8M | 477,408 | 0.00% | 8q | +15.8%+$1.7M |
| MILLENNIUM MANAGEMENT LLC | $8.7M | 323,399 | 0.00% | 5q | -65.5%-$16.5M |
| JANE STREET GROUP, LLC | $5.7M | 169,951 | 0.00% | new | NEW |
| BRAIDWELL LP | $5.6M | 207,240 | 0.21% | new | NEW |
| BOOTHBAY FUND MANAGEMENT, LLC | $5.4M | 202,103 | 0.07% | 6q | -28.6%-$2.2M |
| HighVista Strategies LLC | $4.3M | 158,770 | 0.97% | 5q | -25.5%-$1.5M |
| Trexquant Investment LP | $4.1M | 153,767 | 0.02% | 3q | +120.3%+$2.3M |
| GOLDMAN SACHS GROUP INC | $4.0M | 148,673 | 0.00% | 4q | +231.9%+$2.8M |
| CITADEL ADVISORS LLC | $2.8M | 85,952 | 0.00% | 4q | +31.3%+$677.6K |
| XTX Topco Ltd | $2.3M | 86,986 | 0.03% | 3q | +67.0%+$938.0K |
| AdvisorShares Investments LLC | $1.9M | 71,267 | 0.23% | 20q | +6.3%+$113.8K |
| CenterBook Partners LP | $1.9M | 69,436 | 0.09% | 4q | -67.9%-$4.0M |
| MORGAN STANLEY | $1.4M | 52,218 | 0.00% | 21q | +102.2%+$709.3K |
| Point72 Asset Management, L.P. | $1.4M | 50,882 | 0.00% | new | NEW |
| MARSHALL WACE, LLP | $1.3M | 46,697 | 0.00% | 4q | -48.7%-$1.2M |
| Qube Research & Technologies Ltd | $1.2M | 43,948 | 0.00% | new | NEW |
| GEODE CAPITAL MANAGEMENT, LLC | $1.1M | 40,483 | 0.00% | 20q | HELD |
| Axxion S.A. | $972.2K | 36,170 | 0.07% | new | FIRST |
| TUDOR INVESTMENT CORP ET AL | $921.4K | 34,278 | 0.00% | 2q | +84.7%+$422.5K |
| NORTHERN TRUST CORP | $856.0K | 31,844 | 0.00% | 8q | -2.6%-$22.6K |
| D. E. Shaw & Co., Inc. | $681.3K | 25,345 | 0.00% | new | NEW |
| Quadrature Capital Ltd | $567.6K | 21,117 | 0.00% | new | NEW |
| JPMORGAN CHASE & CO | $535.0K | 18,778 | 0.00% | 5q | HELD |
| Squarepoint Ops LLC | $495.4K | 18,430 | 0.00% | new | NEW |
| Virtus Investment Advisers, LLC | $416.4K | 15,492 | 0.10% | 5q | -25.9%-$145.9K |
| LETKO, BROSSEAU & ASSOCIATES INC | $414.6K | 15,425 | 0.01% | new | NEW |
| China Universal Asset Management Co., Ltd. | $360.7K | 13,419 | 0.02% | 3q | -0.7%-$2.4K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $360.2K | options only | 0.00% | 4q | OPTIONS |
| HighTower Advisors, LLC | $341.4K | 12,700 | 0.00% | 5q | -18.6%-$78.0K |
| STATE STREET CORP | $300.1K | 11,163 | 0.00% | 4q | +1.0%+$3.1K |
| Lion Point Capital, LP | $274.2K | 10,200 | 1.31% | 3q | HELD |
| Eversept Partners, LP | $233.1K | 8,672 | 0.01% | new | NEW |
| HSBC HOLDINGS PLC | $216.4K | 7,847 | 0.00% | new | NEW |
| MERCER GLOBAL ADVISORS INC /ADV | $171.9K | 6,394 | 0.00% | new | NEW |
| BARCLAYS PLC | $160.7K | 5,977 | 0.00% | 4q | +36.0%+$42.6K |
| ROYAL BANK OF CANADA | $158.0K | 5,877 | 0.00% | 17q | +128.9%+$89.0K |
| OSAIC HOLDINGS, INC. | $155.2K | 5,775 | 0.00% | 7q | -2.5%-$4.0K |
| SIMPLEX TRADING, LLC | $135.4K | 4,739 | 0.00% | 4q | +5609.6%+$133.1K |
| Mirae Asset Global Investments Co., Ltd. | $82.5K | 3,068 | 0.00% | 3q | -52.6%-$91.4K |
| North Star Investment Management Corp. | $59.1K | 2,200 | 0.00% | 2q | HELD |
| BNP PARIBAS FINANCIAL MARKETS | $45.6K | 1,697 | 0.00% | 7q | +29.5%+$10.4K |
| CITIGROUP INC | $43.4K | 1,614 | 0.00% | 4q | -6.9%-$3.2K |
| GF FUND MANAGEMENT CO. LTD. | $35.3K | 1,315 | 0.00% | 3q | -5.0%-$1.9K |
| WELLS FARGO & COMPANY/MN | $33.6K | 1,250 | 0.00% | 10q | -50.0%-$33.6K |
| JONES FINANCIAL COMPANIES LLLP | $21.9K | 775 | 0.00% | new | NEW |
| HARBOUR INVESTMENTS, INC. | $21.5K | 800 | 0.00% | new | NEW |
| Tower Research Capital LLC (TRC) | $13.8K | 515 | 0.00% | 3q | -22.6%-$4.0K |
| SBI Securities Co., Ltd. | $11.0K | 411 | 0.00% | 3q | +1955.0%+$10.5K |
| Ancora Advisors LLC | $7.6K | 284 | 0.00% | 2q | HELD |
| HOLLENCREST CAPITAL MANAGEMENT | $6.7K | 250 | 0.00% | new | NEW |
| Federation des caisses Desjardins du Quebec | $5.5K | 205 | 0.00% | new | NEW |
| GROUP ONE TRADING LLC | $2.7K | options only | 0.00% | 2q | OPTIONS |
| Farther Finance Advisors, LLC | $2.7K | 100 | 0.00% | 2q | HELD |
| HRT FINANCIAL LP | $1.8K | 65,375 | 0.00% | new | NEW |
| Cornerstone Financial Management LLC | $860 | 32 | 0.00% | 2q | HELD |
| Caitong International Asset Management Co., Ltd | $511 | 19 | 0.00% | new | NEW |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G/A | Lynx1 Capital Management LPwith 1 co-filers | 19.3% |
| 2026-08-14 | 13G/A | RA Capital Management, L.P.with 3 co-filers | 7.1% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 65 | $1.4B | 51,440,890 | 17 | 18 | 16 | 0.1% |
| Q1 2026 | 55 | $668.8M | 47,554,311 | 12 | 20 | 11 | 0.0% |
| Q4 2025 | 51 | $592.5M | 46,529,570 | 10 | 16 | 14 | 0.3% |
| Q3 2025 | 48 | $618.7M | 44,543,119 | 17 | 17 | 10 | 0.1% |
| Q2 2025 | 38 | $531.2M | 43,576,067 | 6 | 13 | 11 | 0.0% |
| Q1 2025 | 36 | $470.2M | 42,619,365 | 15 | 10 | 8 | 0.0% |
| Q4 2024 | 33 | $215.0M | 30,702,522 | 6 | 7 | 5 | 0.0% |
| Q3 2024 | 30 | $204.2M | 30,520,551 | 3 | 6 | 7 | 0.0% |
| Q2 2024 | 31 | $355.5M | 30,425,860 | 3 | 7 | 9 | 0.2% |
| Q1 2024 | 32 | $321.7M | 30,130,611 | 7 | 7 | 8 | 0.2% |
| Q4 2023 | 33 | $173.4M | 29,873,112 | 4 | 7 | 7 | 0.1% |
| Q3 2023 | 28 | $291.0M | 28,959,899 | 1 | 13 | 3 | 0.0% |
| Q2 2023 | 33 | $351.3M | 29,608,794 | 5 | 3 | 8 | 0.0% |
| Q1 2023 | 25 | $266.3M | 33,332,279 | 1 | 7 | 6 | 0.0% |
| Q4 2022 | 28 | $292.5M | 30,180,872 | 3 | 5 | 7 | 0.0% |
| Q3 2022 | 33 | $374.2M | 32,207,156 | 3 | 9 | 12 | 0.0% |
| Q2 2022 | 34 | $325.0M | 32,560,031 | 5 | 11 | 7 | 0.0% |
| Q1 2022 | 33 | $589.6M | 32,244,508 | 7 | 8 | 7 | 0.0% |
| Q4 2021 | 29 | $701.0M | 30,046,921 | 7 | 7 | 7 | 0.0% |
| Q3 2021 | 29 | $625.2M | 28,509,902 | 6 | 7 | 10 | 0.0% |
| Q2 2021 | 34 | $593.7M | 27,592,126 | 34 | 0 | 0 | 0.0% |