Amarin Corp
AMRN
89 hedge funds and large institutions have $57M invested in Amarin Corp in 2025 Q2 according to their latest regulatory filings, with 19 funds opening new positions, 26 increasing their positions, 31 reducing their positions, and 70 closing their positions.
166% more call options, than puts
Call options by funds: $8.92M | Put options by funds: $3.35M
100% more funds holding in top 10
Funds holding in top 10: 1 → 2 (+1)
83% more capital invested
Capital invested by funds: $31.1M → $57M (+$25.9M)
0.18% more ownership
Funds ownership: 16.81% → 17% (+0.18%)
16% less repeat investments, than reductions
Existing positions increased: 26 | Existing positions reduced: 31
37% less funds holding
Funds holding: 141 → 89 (-52)
73% less first-time investments, than exits
New positions opened: 19 | Existing positions closed: 70
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Acadian Asset Management
Boston,
Massachusetts
|
+$579K |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$511K |
| 3 |
Millennium Management
New York
|
+$498K |
| 4 |
JF
Jump Financial
Chicago,
Illinois
|
+$432K |
| 5 |
GKFF
George Kaiser Family Foundation
Tulsa,
Oklahoma
|
+$430K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Two Sigma Advisers
New York
|
-$532K |
| 2 |
KCM
Kynam Capital Management
Princeton,
New Jersey
|
-$502K |
| 3 |
GCP
GSA Capital Partners
London,
United Kingdom
|
-$382K |
| 4 |
Two Sigma Investments
New York
|
-$380K |
| 5 |
WW
Waterfront Wealth
Overland Park,
Kansas
|
-$349K |
AMRN Hedge Fund Activity: Q2 2025 in Review
89 of the 7,613 institutional investors tracked by Wall St. Rank reported a position in Amarin Corp (AMRN) for Q2 2025, worth a combined $57M — up 83% from $31.1M a quarter earlier.
Sellers outnumbered buyers: 70 funds closed out of AMRN and 19 opened new positions — a net loss of 51 holders — while 31 trimmed existing stakes and 26 added.
The largest buyer was Acadian Asset Management, adding an estimated $579K. The largest seller was Two Sigma Advisers, cutting an estimated $532K.
- 89 institutional investors held Amarin Corp (AMRN) as of Q2 2025, down from 141 in Q1 2025.
- Funds reported $57M of Amarin Corp stock for Q2 2025, up 83% quarter-over-quarter.
- 19 funds opened new Amarin Corp positions in Q2 2025 and 70 closed out, a net change of -51 holders.
- The largest Amarin Corp buyer in Q2 2025 was Acadian Asset Management, an estimated $579K added.
- The largest Amarin Corp seller in Q2 2025 was Two Sigma Advisers, an estimated $532K sold.
Based on aggregated 13F filings for Q2 2025.