GH Research PLC (GHRS) — Institutional Holders, Q2 2026
62 institutional investment managers reported a GHRS position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $1.0B. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
GHRS in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- Deep Track CapitalNew · +3,333,334 sh+$89.6M
- FMRAdded · +841,000 sh+$22.6M
- Foresite Capital Management VIAdded · +625,001 sh+$16.8M
- BRAIDWELLNew · +207,240 sh+$5.6M
- JANE STREET GROUPNew · +169,951 sh+$4.6M
Biggest sellers
- Lynx1 Capital ManagementSold out · -10,763,288 sh-$289.3M
- TORONTO DOMINION BANKSold out · -1,397,873 sh-$37.6M
- Troluce Capital AdvisorsSold out · -990,472 sh-$26.6M
- MILLENNIUM MANAGEMENTTrimmed · -614,499 sh-$16.5M
- 5AM Venture ManagementSold out · -572,665 sh-$15.4M
GHRS 13F holders ranked 1–62 of 62
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | BVF#1 · 8,650,158 sh | 8,650,158 | $232.5M | 5.95% | 0.0% |
| 2 | RA CAPITAL MANAGEMENT, L.P.#2 · 7,636,813 sh | 7,636,813 | $205.3M | 1.78% | -0.5% |
| 3 | FMR#3 · 5,977,045 sh | 5,977,045 | $160.7M | <0.01% | +16.4% |
| 4 | RTW INVESTMENTS#4 · 5,933,815 sh | 5,933,815 | $159.5M | 1.36% | 0.0% |
| 5 | Deep Track Capital#5 · 3,333,334 sh | 3,333,334 | $89.6M | 1.30% | New |
| 6 | Avoro Capital Advisors#6 · 1,800,000 sh | 1,800,000 | $48.4M | 0.43% | 0.0% |
| 7 | Foresite Capital Management VI#7 · 940,493 sh | 940,493 | $25.3M | 3.93% | +198.1% |
| 8 | LEUCADIA NATIONAL#8 · 712,300 sh | 712,300 | $19.1M | 0.13% | 0.0% |
| 9 | BlackRock#9 · 480,287 sh | 480,287 | $12.9M | <0.01% | +5.4% |
| 10 | UBS Group AG#10 · 477,408 sh | 477,408 | $12.8M | <0.01% | +15.8% |
| 11 | MILLENNIUM MANAGEMENT#11 · 323,399 sh | 323,399 | $8.7M | <0.01% | -65.5% |
| 12 | BRAIDWELL#12 · 207,240 sh | 207,240 | $5.6M | 0.21% | New |
| 13 | BOOTHBAY FUND MANAGEMENT#13 · 202,103 sh | 202,103 | $5.4M | 0.07% | -28.6% |
| 14 | JANE STREET GROUP#14 · 169,951 sh | 169,951 | $4.6M | <0.01% | New |
| 15 | HighVista Strategies#15 · 158,770 sh | 158,770 | $4.3M | 0.97% | -25.5% |
| 16 | Trexquant Investment#16 · 153,767 sh | 153,767 | $4.1M | 0.02% | +120.3% |
| 17 | GOLDMAN SACHS GROUP#17 · 148,673 sh | 148,673 | $4.0M | <0.01% | +231.9% |
| 18 | XTX Topco Ltd#18 · 86,986 sh | 86,986 | $2.3M | 0.03% | +67.0% |
| 19 | CITADEL ADVISORS#19 · 85,952 sh | 85,952 | $2.3M | <0.01% | +31.3% |
| 20 | AdvisorShares Investments#20 · 71,267 sh | 71,267 | $1.9M | 0.23% | +6.3% |
| 21 | CenterBook Partners#21 · 69,436 sh | 69,436 | $1.9M | 0.09% | -67.9% |
| 22 | HRT FINANCIAL#22 · 65,375 sh | 65,375 | $1.8M | <0.01% | New |
| 23 | MORGAN STANLEY#23 · 52,218 sh | 52,218 | $1.4M | <0.01% | +102.2% |
| 24 | Point72 Asset Management, L.P.#24 · 50,882 sh | 50,882 | $1.4M | <0.01% | New |
| 25 | MARSHALL WACE, LLP#25 · 46,697 sh | 46,697 | $1.3M | <0.01% | -48.7% |
| 26 | Qube Research & Technologies Ltd#26 · 43,948 sh | 43,948 | $1.2M | <0.01% | New |
| 27 | GEODE CAPITAL MANAGEMENT#27 · 40,483 sh | 40,483 | $1.1M | <0.01% | 0.0% |
| 28 | Axxion S.A.#28 · 36,170 sh | 36,170 | $972.3K | — | — |
| 29 | TUDOR INVESTMENT ET AL#29 · 34,278 sh | 34,278 | $921.4K | <0.01% | +84.7% |
| 30 | NORTHERN#30 · 31,844 sh | 31,844 | $856.0K | <0.01% | -2.6% |
| 31 | D. E. Shaw#31 · 25,345 sh | 25,345 | $681.3K | <0.01% | New |
| 32 | Quadrature Capital Ltd#32 · 21,117 sh | 21,117 | $567.6K | <0.01% | New |
| 33 | JPMORGAN CHASE#33 · 18,778 sh | 18,778 | $535.0K | 0.00% | -0.4% |
| 34 | Squarepoint Ops#34 · 18,430 sh | 18,430 | $495.4K | <0.01% | New |
| 35 | Virtus Investment Advisers#35 · 15,492 sh | 15,492 | $416.4K | 0.10% | -25.9% |
| 36 | LETKO, BROSSEAU & ASSOCIATES#36 · 15,425 sh | 15,425 | $414.6K | <0.01% | New |
| 37 | China Universal Asset Management , Ltd.#37 · 13,419 sh | 13,419 | $360.7K | 0.02% | -0.7% |
| 38 | HighTower Advisors#38 · 12,700 sh | 12,700 | $341.4K | <0.01% | -18.6% |
| 39 | STATE STREET#39 · 11,163 sh | 11,163 | $300.1K | 0.00% | +1.0% |
| 40 | Lion Point Capital#40 · 10,200 sh | 10,200 | $274.2K | 1.31% | 0.0% |
| 41 | Eversept Partners#41 · 8,672 sh | 8,672 | $233.1K | 0.01% | New |
| 42 | HSBC PLC#42 · 7,847 sh | 7,847 | $216.4K | <0.01% | New |
| 43 | BARCLAYS PLC#43 · 5,977 sh | 5,977 | $160.7K | 0.00% | +36.0% |
| 44 | ROYAL BANK OF CANADA#44 · 5,877 sh | 5,877 | $158.0K | 0.00% | +126.9% |
| 45 | OSAIC#45 · 5,775 sh | 5,775 | $155.2K | <0.01% | -2.5% |
| 46 | SIMPLEX TRADING#46 · 4,739 sh | 4,739 | $127.4K | <0.01% | +5609.6% |
| 47 | Mirae Asset Global Investments , Ltd.#47 · 3,068 sh | 3,068 | $82.5K | <0.01% | -5.2% |
| 48 | North Star Investment Management#48 · 2,200 sh | 2,200 | $59.1K | — | 0.0% |
| 49 | BNP PARIBAS FINANCIAL MARKETS#49 · 1,697 sh | 1,697 | $45.6K | 0.00% | +29.5% |
| 50 | CITIGROUP#50 · 1,614 sh | 1,614 | $43.4K | 0.00% | -6.9% |
| 51 | GF FUND MANAGEMENT LTD.#51 · 1,315 sh | 1,315 | $35.3K | — | -5.0% |
| 52 | WELLS FARGO & COMPANY#52 · 1,250 sh | 1,250 | $33.6K | 0.00% | 0.0% |
| 53 | JONES FINANCIAL COMPANIES LLLP#53 · 775 sh | 775 | $21.9K | 0.00% | New |
| 54 | HARBOUR INVESTMENTS#54 · 800 sh | 800 | $21.5K | <0.01% | New |
| 55 | Tower Research Capital (TRC)#55 · 515 sh | 515 | $13.8K | <0.01% | -22.6% |
| 56 | SBI Securities , Ltd.#56 · 411 sh | 411 | $11.0K | — | +1955.0% |
| 57 | Ancora Advisors#57 · 284 sh | 284 | $7.6K | <0.01% | New |
| 58 | HOLLENCREST SECURITIES#58 · 250 sh | 250 | $6.7K | <0.01% | New |
| 59 | Federation des caisses Desjardins du Quebec#59 · 205 sh | 205 | $5.5K | 0.00% | New |
| 60 | Farther Finance Advisors#60 · 100 sh | 100 | $2.7K | — | 0.0% |
| 61 | Cornerstone Financial Management#61 · 32 sh | 32 | $860.00 | <0.01% | 0.0% |
| 62 | Caitong International Asset Management , Ltd#62 · 19 sh | 19 | $511.00 | <0.01% | New |
Funds that sold out of GHRS in Q2 2026 (10)
Held GHRS at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| Lynx1 Capital Management10,763,288 sh | 10,763,288 | $151.3M |
| TORONTO DOMINION BANK1,397,873 sh | 1,397,873 | $19.7M |
| Troluce Capital Advisors990,472 sh | 990,472 | $13.9M |
| 5AM Venture Management572,665 sh | 572,665 | $8.1M |
| Squadron Capital Management325,000 sh | 325,000 | $4.6M |
| Occam Crest Management80,000 sh | 80,000 | $1.1M |
| DIADEMA PARTNERS26,836 sh | 26,836 | $377.3K |
| RENAISSANCE TECHNOLOGIES20,614 sh | 20,614 | $289.8K |
| Persistent Asset Partners Ltd6,794 sh | 6,794 | $95.5K |
| Arkos Global Advisors1,180 sh | 1,180 | $17.0K |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.