Amarin Corp Plc\Uk (AMRN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

20,545,750Shares Outstanding

182,026Shares held by institutions

$2,846,887Value of institutional holdings

21.85%Institutional ownership %

15.42%Shares Changed QoQ

73No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

According to SEC filings for the period ending December 2025, Amarin Corp Plc\Uk (NASDAQ:AMRN) is held by 73 institutional firms.

The collective stake of institutional investors in Amarin Corp Plc\Uk moved to 21.8% in December 2025, a shift up from the 19.9% reported for September 2025.
On a quarter-over-quarter basis, institutional holdings shifted by 15.42%, with a year-over-year a decrease of 54.09% in the count of filers.
Among the 73 institutional holders of Amarin Corp Plc\Uk, 31 added to their stakes while 18 trimmed their positions and 24 held steady.
This class of investors increased its holdings in Amarin Corp Plc\Uk to 4.49Mn shares for the 13F-cycle ending December 2025, up by 599.63K shares quarter on quarter, and up 945.45K shares year over year.
Sarissa Capital Management LP continues to be the largest institutional holder of Amarin Corp Plc\Uk as of December 31, 2025, with a position of 1.67Mn shares, representing 8.14% of the company's outstanding stock.
Among the most significant buyers of Amarin Corp Plc\Uk during December 2025 were Sarissa Capital Management LP (430.87K), ACADIAN ASSET MANAGEMENT LLC (123.86K), Waterfront Wealth Inc. (64.58K), MORGAN STANLEY (60.45K), TWO SIGMA INVESTMENTS, LP (51.10K).
Leading sellers of Amarin Corp Plc\Uk stock in December 2025 included Kynam Capital Management, LP (186.84K), Quinn Opportunity Partners LLC (44.16K), JANE STREET GROUP, LLC (43.59K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (18.26K), UBS Group AG (12.05K).
The top 10 institutional holders of Amarin Corp Plc\Uk for the quarter ending December 2025 included Sarissa Capital Management LP (1.67Mn), ACADIAN ASSET MANAGEMENT LLC (580.44K), Kynam Capital Management, LP (389.27K), MORGAN STANLEY (330.11K), Eversept Partners, LP (172.19K), CITADEL ADVISORS LLC (168.00K), MILLENNIUM MANAGEMENT LLC (166.24K), Waterfront Wealth Inc. (142.54K), TWO SIGMA INVESTMENTS, LP (111.17K), BNP PARIBAS FINANCIAL MARKETS (104.34K).

73 Institutional Holders

182,026 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Sarissa Capital Management LP	31 Dec, 2025	1,673,395	430,868	34.68%	$23,352,227.00
ACADIAN ASSET MANAGEMENT LLC	31 Dec, 2025	580,442	123,862	27.13%	$8,080.00
Kynam Capital Management, LP	31 Dec, 2025	389,273	-186,838	-32.43%	$5,432,305.00
MORGAN STANLEY	31 Dec, 2025	330,109	60,446	22.42%	$4,606,671.00
Eversept Partners, LP	31 Dec, 2025	172,188	4,912	2.94%	$2,402,884.00
CITADEL ADVISORS LLC	31 Dec, 2025	168,004	45,713	37.38%	$2,344,496.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	166,235	33,844	25.56%	$2,319,809.00
Waterfront Wealth Inc.	31 Dec, 2025	142,540	64,580	82.84%	$2,265,673.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	111,168	51,097	85.06%	$1,551,349.00
BNP PARIBAS FINANCIAL MARKETS	31 Dec, 2025	104,345	16,979	19.43%	$1,456,134.00
SCP Investment, LP	31 Dec, 2025	100,000	0	0.00%	$1,395,500.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	61,847	-18,262	-22.80%	$863,074.00
LCM Capital Management Inc	31 Dec, 2025	42,262	-500	-1.17%	$589,766.00
TWO SIGMA ADVISERS, LP	31 Dec, 2025	36,995	20,200	120.27%	$516,265.00
Point72 Asset Management, L.P.	31 Dec, 2025	36,491	36,491	0.00%	$509,232.00
JANE STREET GROUP, LLC	31 Dec, 2025	32,832	-43,592	-57.04%	$458,171.00
SEI INVESTMENTS CO	31 Dec, 2025	29,212	0	0.00%	$407,644.00
Jump Financial, LLC	31 Dec, 2025	26,900	7,500	38.66%	$375,390.00
OSAIC HOLDINGS, INC.	31 Dec, 2025	24,271	-5,851	-19.42%	$338,719.00
STATE STREET CORP	31 Dec, 2025	23,867	592	2.54%	$333,064.00

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