Magnetar Financial’s Alkermes ALKS Stock Holding History

Magnetar Financial’s Portfolio ALKS Stock Details ALKS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2014 Q2	–	Sell	-8,500	Closed	-$375K	–	171
2014 Q1	$375K	Buy	+8,500	New	+$404K	0.01%	203

Other funds holding ALKS

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

BBA

Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Commodore Capital New York $1.73B AUM 298.96% 1-Year Est. Return

Magnetar Financial's ALKS Position: Q1 2026 in Review

Magnetar Financial sold out of Alkermes (ALKS) in Q1 2026, closing a stake of 13,701 shares — an estimated $383K sold.

Magnetar Financial first reported a position in ALKS in Q3 2017 and held it in 4 quarters. The position peaked at $3.54M in Q2 2025. 388 funds tracked by Wall St. Rank hold ALKS as of Q1 2026.

Magnetar Financial reported no remaining Alkermes position as of Q1 2026 after selling out during the quarter.
Magnetar Financial sold 13,701 Alkermes shares in Q1 2026, an estimated $383K.
Magnetar Financial first reported a position in Alkermes in Q3 2017 and held it in 4 quarters.
Magnetar Financial's Alkermes position peaked at $3.54M in Q2 2025.
388 funds tracked by Wall St. Rank held Alkermes as of Q1 2026.

Based on Magnetar Financial's 13F filing for Q1 2026, filed 13 May 2026.