SEI Investments’s Amarin Corp AMRN Stock Holding History

SEI Investments’s Portfolio AMRN Stock Details AMRN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$466K	Buy	+29,211	New	+$432K	﹤0.01%	2671
2026 Q1	–	Sell	-29,212	Closed	-$408K	–	3239
2025 Q4	$408K	Hold	29,212	–	–	﹤0.01%	2603
2025 Q3	$478K	Buy	29,212 +1,299	+5%	+$20.2K	﹤0.01%	2249
2025 Q2	$453K	Sell	27,913 -1	-0%	-$11	﹤0.01%	2228
2025 Q1	$250K	Buy	27,914 +15,989	+134%	+$169K	﹤0.01%	2404
2024 Q4	$116K	Buy	+11,925	New	+$128K	﹤0.01%	2559
2023 Q3	–	Sell	-6,433	Closed	-$153K	–	2621
2023 Q2	$153K	Sell	6,433 -18,904	-75%	-$485K	﹤0.01%	2511
2023 Q1	$760K	Buy	25,337 +23,960	+1,740%	+$840K	﹤0.01%	1979
2022 Q4	$33.3K	Buy	+1,377	New	+$33.1K	﹤0.01%	2497
2022 Q3	–	Sell	-813	Closed	-$14K	–	2651
2022 Q2	$14K	Buy	+813	New	+$35.1K	﹤0.01%	2635
2020 Q4	–	Sell	-14,135	Closed	-$1.19M	–	2452
2020 Q3	$1.19M	Sell	14,135 -35,101	-71%	-$4.21M	﹤0.01%	1527
2020 Q2	$6.81M	Buy	49,236 +260	+0.5%	+$35.8K	0.02%	715
2020 Q1	$3.92M	Sell	48,976 -2,295	-4%	-$762K	0.01%	867
2019 Q4	$22M	Buy	51,271 +8,462	+20%	+$3.21M	0.07%	293
2019 Q3	$13M	Buy	42,809 +39,525	+1,204%	+$13.8M	0.03%	474
2019 Q2	$1.27M	Buy	3,284 +343	+12%	+$126K	﹤0.01%	1516
2019 Q1	$1.22M	Buy	2,941 +1,339	+84%	+$483K	﹤0.01%	1525
2018 Q4	$521K	Hold	1,602	–	–	﹤0.01%	1742
2018 Q3	$521K	Buy	1,602 +1,202	+301%	+$90.8K	﹤0.01%	1655
2018 Q2	$25K	Hold	400	–	–	﹤0.01%	2722
2018 Q1	$24K	Buy	+400	New	+$29.7K	﹤0.01%	2592
2017 Q2	–	Sell	-150	Closed	-$10K	–	3055
2017 Q1	$10K	Buy	+150	New	+$9.53K	﹤0.01%	2453

Other funds holding AMRN

SCM

Sarissa Capital Management Greenwich, Connecticut $178M AUM 118.43% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

KCM

Kynam Capital Management Princeton, New Jersey $1.81B AUM 192.15% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Waterfront Wealth Overland Park, Kansas $645M AUM 27.59% 1-Year Est. Return

BFM

Brooklands Fund Management London, United Kingdom $128M AUM

Eversept Partners New York $1.93B AUM 160.8% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return

SEI Investments's AMRN Position: Q2 2026 in Review

SEI Investments opened a new position in Amarin Corp (AMRN) in Q2 2026: 29,211 shares worth $466K. The stake represents ﹤0.01% of the portfolio and ranks #2671 among its holdings. This is a return to the name: SEI Investments previously reported a position in AMRN as recently as Q4 2025.

SEI Investments first reported a position in AMRN in Q1 2017 and has held it in 22 quarters since. The position peaked at $22M in Q4 2019. 81 funds tracked by Wall St. Rank hold AMRN as of Q2 2026.

SEI Investments held 29,211 shares of Amarin Corp worth $466K as of Q2 2026.
Amarin Corp was a new SEI Investments position in Q2 2026.
Amarin Corp made up ﹤0.01% of SEI Investments's portfolio in Q2 2026, its #2671 holding.
SEI Investments first reported a position in Amarin Corp in Q1 2017 and has held it in 22 quarters since.
SEI Investments's Amarin Corp position peaked at $22M in Q4 2019.
81 funds tracked by Wall St. Rank held Amarin Corp as of Q2 2026.

Based on SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.