Amarin Ownership | Who Owns Amarin?

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Amarin Ownership Summary

Amarin is owned by 1.11% institutional investors, 1.97% insiders, and 96.92% retail investors. Sarissa capital management lp is the largest institutional shareholder, holding 0.40% of AMRN shares. Old Westbury Small & Mid Cap Strategies is the top mutual fund, with 0.27% of its assets in Amarin shares.

AMRN Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Amarin	1.11%	1.97%	96.92%
Sector	Healthcare Stocks	35.74%	11.83%	52.43%
Industry	Biotech Stocks	36.05%	11.82%	52.13%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Sarissa capital management lp	1.67M	0.40%	$24.20M
Longitude	1.62M	0.39%	$785.70K
Raymond james financial services advisors	685.14K	0.17%	$471.38K
Acadian asset management	636.77K	0.15%	$9.18M
Kynam capital management, lp	472.38K	0.11%	$6.83M
Regis management	350.00K	0.09%	$241.00K
Millennium management	300.54K	0.07%	$4.35M
Morgan stanley	293.17K	0.07%	$4.24M
Blackrock	270.06K	0.07%	$185.80K
Cutter & co brokerage	240.02K	0.06%	$117.61K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Sarissa capital management lp	1.67M	15.35%	$24.20M
Waterfront wealth	203.34K	0.54%	$2.94M
Kynam capital management, lp	472.38K	0.42%	$6.83M
Lcm capital management	43.46K	0.32%	$628.46K
Longitude	1.62M	0.17%	$785.70K
Eversept partners, lp	147.72K	0.11%	$2.14M
Regis management	350.00K	0.07%	$241.00K
Hayek kallen investment management	12.81K	0.06%	$185.00K
Cutter & co brokerage	240.02K	0.03%	$117.61K
Nj state employees deferred compensation plan	10.90K	0.02%	$178.54K

Top Buyers

Holder	Shares	% Assets	Change
Point72 asset management	240.76K	0.00%	204.27K
Millennium management	300.54K	0.00%	134.30K
Kynam capital management, lp	472.38K	0.42%	83.11K
Waterfront wealth	203.34K	0.54%	60.80K
Acadian asset management	636.77K	0.01%	56.33K

Top Sellers

Holder	Shares	% Assets	Change
Dg capital management	-	-	-5.12M
Tang capital management	-	-	-2.50M
Price jennifer c.	-	-	-2.38M
Gsa capital partners llp	-	-	-853.35K
Longitude	1.62M	0.17%	-750.00K

New Positions

Holder	Shares	% Assets	Change	Value
Renaissance	19.26K	0.00%	19.26K	$278.44K
Quadrature capital	18.35K	0.00%	18.35K	$300.32K
Cubist systematic strategies	13.70K	0.00%	13.70K	$224.39K
Graham capital management	13.52K	0.00%	13.52K	$221.46K
Goldman sachs group	11.92K	-	11.92K	$172.33K

Sold Out

Holder	Change
Cbiz investment advisory services	-5.00
Principal securities	-9.00
Glenmede investment management, lp	-45.00
Bryn mawr trust	-50.00
Nelson, van denburg & campbell wealth management group	-50.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	69	-15.85%	4,596,336	1.30%	1	92.65%	26	-25.71%	13	-23.53%
Dec 31, 2025	53	-44.79%	1,584,464	-60.43%	-	40.86%	21	-44.74%	9	-47.06%
Sep 30, 2025	92	-1.08%	4,002,266	13.70%	-	133.88%	37	48.00%	16	-73.77%
Jun 30, 2025	92	-30.83%	3,509,256	-94.86%	-	122.73%	24	-35.14%	61	60.53%
Mar 31, 2025	133	-19.88%	70,074,553	-1.11%	-	0.29%	37	-30.19%	38	-22.45%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Old Westbury Small & Mid Cap Strategies	55.73K	0.27%	-
Waterfront OS	53.77K	0.26%	9.11K
PSM Value Strategy UI	50.00K	0.24%	50.00K
Waterfront OE	37.75K	0.18%	-39.03K
State Street® SPDR® Ptf Dev Wld exUS ETF	16.66K	0.08%	-
SPDR® Portfolio Developed Wld ex-US ETF	14.82K	0.07%	-
SEI International Equity F (SIT)	13.65K	0.07%	-
iShares Nasdaq US Biotech ETF USD Acc	11.93K	0.06%	-
Fidelity Nasdaq Composite Index	11.77K	0.06%	-
Voya Multi-Manager International Sm Cp A	10.54K	0.05%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 02, 2024	Berg Aaron	President and CEO	Buy	$102.40K
Jan 22, 2024	Holt Patrick	President and CEO	Buy	$15.72K
Dec 12, 2023	Ketchum Steven B	Chief Scientific Officer	Sell	$26.96K
Aug 16, 2023	Holt Patrick	President and CEO	Buy	$71.26K
Aug 16, 2023	Holt Patrick	President and CEO	Buy	$27.27K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	-
2026 Q1	-	-
2025 Q4	-	-
2025 Q3	-	-
2025 Q2	-	-

AMRN Ownership FAQ

Who Owns Amarin?

Amarin shareholders are primarily institutional investors at 1.11%, followed by 1.97% insiders and 96.92% retail investors. The average institutional ownership in Amarin's industry, Biotech Stocks , is 36.05%, which Amarin falls below.

Who owns the most shares of Amarin?

Amarin’s largest shareholders are Sarissa capital management lp (1.67M shares, 0.40%), Longitude (1.62M shares, 0.39%), and Raymond james financial services advisors (685.14K shares, 0.17%). Together, they hold 0.96% of Amarin’s total shares outstanding.

Does Blackrock own Amarin?

Yes, BlackRock owns 0.07% of Amarin, totaling 270.06K shares as of Jun 2024. This represents 0% of BlackRock's total assets, with a market value of 185.8K$. In the last quarter, BlackRock increased its holdings by 20.35K shares, a 8.15% change.

Who is Amarin’s biggest shareholder by percentage of total assets invested?

Sarissa capital management lp is Amarin’s biggest shareholder by percentage of total assets invested, with 15.35% of its assets in 1.67M Amarin shares, valued at 24.2M$.

Who is the top mutual fund holder of Amarin shares?

Old Westbury Small & Mid Cap Strategies is the top mutual fund holder of Amarin shares, with 0.27% of its total shares outstanding invested in 55.73K Amarin shares.

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