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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
2026
Q1 		– Sell
-13,701
Closed -$383K – 1141
2025
Q4 		$383K Buy
+13,701
New +$410K ﹤0.01% 617
2025
Q3 		– Sell
-123,678
Closed -$3.54M – 873
2025
Q2 		$3.54M Buy
+123,678
New +$3.68M 0.02% 274
2024
Q1 		– Sell
-22,904
Closed -$635K – 370
2023
Q4 		$635K Buy
+22,904
New +$595K 0.02% 289
2017
Q4 		– Sell
-24,822
Closed -$1.26M – 683
2017
Q3 		$1.26M Buy
+24,822
New +$1.33M 0.02% 227

Other funds holding ALKS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
CC
Commodore Capital New York $1.68B AUM 375.52% 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. 390 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.
  • 390 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.