GH Research PLC (GHRS) Institutional Ownership

Ownership Summary

A total of 47 institutions have reported a stake in GH Research PLC (NASDAQ:GHRS) as of September 2025, according to recent 13F filings with the SEC.

• The collective stake of institutional investors in GH Research moved to 71.8% in September 2025, a shift up from the 70.2% reported for June 2025.
• The company experienced a 7.01% quarterly change in institutional shares held, alongside an increase of 67.86% in total owners annually.
• A review of institutional activity for GH Research shows 30 of 47 filers increasing their positions, while 12 reduced their stake, and 5 remained unchanged.
• The total number of shares held by institutions in GH Research increased to 44.53Mn as of September 2025, a net change of up by 2.92Mn shares quarter on quarter, and up 14.01Mn shares year over year.
• With 8.83Mn shares, BVF INC/IL commands the largest institutional position in GH Research as of September 30, 2025, equating to 14.23% of the company.
• Among the most significant buyers of GH Research during September 2025 were Lynx1 Capital Management LP (1.85Mn), MILLENNIUM MANAGEMENT LLC (659.96K), STEMPOINT CAPITAL LP (444.45K), FMR LLC (234.90K), HighVista Strategies LLC (189.65K).
• Leading sellers of GH Research stock in September 2025 included Deep Track Capital, LP (750.00K), MORGAN STANLEY (276.76K), Cormorant Asset Management, LP (93.04K), Alyeska Investment Group, L.P. (50.00K), Troluce Capital Advisors LLC (39.07K).
• The top 10 institutional holders of GH Research for the quarter ending September 2025 included BVF INC/IL (8.83Mn), Lynx1 Capital Management LP (8.60Mn), RA CAPITAL MANAGEMENT, L.P. (7.68Mn), RTW INVESTMENTS, LP (5.57Mn), FMR LLC (5.33Mn), Cormorant Asset Management, LP (1.92Mn), Deep Track Capital, LP (1.25Mn), MILLENNIUM MANAGEMENT LLC (863.60K), Jefferies Financial Group Inc. (709.31K), Verition Fund Management LLC (678.49K).