GH Research PLC (GHRS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

60,956,522Shares Outstanding

17,318,944Shares held by institutions

$276,929,915Value of institutional holdings

76.43%Institutional ownership %

9.47%Shares Changed QoQ

53No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

According to SEC filings for the period ending December 2025, GH Research PLC (NASDAQ:GHRS) is held by 53 institutional firms.

The collective stake of institutional investors in GH Research moved to 76.4% in December 2025, a shift up from the 73.1% reported for September 2025.
The company experienced a 9.47% quarterly change in institutional shares held, alongside an increase of 65.62% in total owners annually.
A review of institutional activity for GH Research shows 33 of 53 filers increasing their positions, while 14 reduced their stake, and 6 remained unchanged.
The aggregate institutional position in GH Research now stands at 46.59Mn shares as of December 2025, after investors increased their holdings (up by 4.03Mn shares quarter on quarter which is up 15.88Mn shares year over year).
As of December 31, 2025, Lynx1 Capital Management LP held GH Research's largest shareholding position with over 10.41Mn shares, representing 17.07% of total outstanding shares.
Among the most significant buyers of GH Research during December 2025 were Lynx1 Capital Management LP (1.81Mn), Avoro Capital Advisors LLC (1.80Mn), BlackRock, Inc. (376.54K), RTW INVESTMENTS, LP (364.25K), Troluce Capital Advisors LLC (326.49K).
Leading sellers of GH Research stock in December 2025 included Cormorant Asset Management, LP (616.44K), MILLENNIUM MANAGEMENT LLC (567.68K), FMR LLC (191.00K), UBS Group AG (148.08K), CITADEL ADVISORS LLC (68.14K).
The top 10 institutional holders of GH Research for the quarter ending December 2025 included Lynx1 Capital Management LP (10.41Mn), BVF INC/IL (8.83Mn), RA CAPITAL MANAGEMENT, L.P. (7.68Mn), RTW INVESTMENTS, LP (5.93Mn), FMR LLC (5.14Mn), Avoro Capital Advisors LLC (1.80Mn), Cormorant Asset Management, LP (1.30Mn), Jefferies Financial Group Inc. (712.30K), Verition Fund Management LLC (673.74K), 5AM Venture Management, LLC (572.66K).

53 Institutional Holders

17,318,944 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Lynx1 Capital Management LP	31 Dec, 2025	10,406,575	1,805,386	20.99%	$132,163,502.00
BVF INC/IL	31 Dec, 2025	8,827,712	0	0.00%	$112,111,942.00
RA CAPITAL MANAGEMENT, L.P.	31 Dec, 2025	7,676,697	0	0.00%	$97,494,052.00
RTW INVESTMENTS, LP	31 Dec, 2025	5,933,815	364,251	6.54%	$75,359,451.00
FMR LLC	31 Dec, 2025	5,136,045	-191,000	-3.59%	$65,227,771.00
Avoro Capital Advisors LLC	31 Dec, 2025	1,800,000	1,800,000	0.00%	$22,860,000.00
Cormorant Asset Management, LP	31 Dec, 2025	1,300,000	-616,439	-32.17%	$16,510,000.00
Jefferies Financial Group Inc.	31 Dec, 2025	712,300	2,988	0.42%	$9,046,210.00
Verition Fund Management LLC	31 Dec, 2025	673,735	-4,754	-0.70%	$8,556,435.00
5AM Venture Management, LLC	31 Dec, 2025	572,665	0	0.00%	$7,272,846.00
BlackRock, Inc.	31 Dec, 2025	434,401	376,542	650.79%	$5,516,893.00
Troluce Capital Advisors LLC	31 Dec, 2025	373,212	326,490	698.79%	$4,739,792.00
UBS Group AG	31 Dec, 2025	363,381	-148,083	-28.95%	$4,614,939.00
Squadron Capital Management LLC	31 Dec, 2025	315,000	315,000	0.00%	$4,000,500.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	295,926	-567,676	-65.73%	$3,758,260.00
CenterBook Partners LP	31 Dec, 2025	283,441	117,288	70.59%	$3,599,701.00
MARSHALL WACE, LLP	31 Dec, 2025	240,764	71,264	42.04%	$3,057,703.00
HighVista Strategies LLC	31 Dec, 2025	240,524	-1,370	-0.57%	$3,054,655.00
Alyeska Investment Group, L.P.	31 Dec, 2025	204,975	0	0.00%	$2,603,183.00
BOOTHBAY FUND MANAGEMENT, LLC	31 Dec, 2025	112,184	28,634	34.27%	$1,424,737.00

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