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Ikarian Capital’s Biogen BIIB Stock Holding History

Ikarian Capital’s Portfolio BIIB Stock Details BIIB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2022
Q4 		– Sell
-53,200
Closed -$14.2M – 90
2022
Q3 		$14.2M Buy
+53,200
New +$11.3M 2.83% 10
2021
Q1 		– Sell
-360,000
Closed -$88.1M – 304
2020
Q4 		$88.1M Buy
360,000
+221,200
+159% +$57.1M 3.89% 6
2020
Q3 		$39.4M Buy
+138,800
New +$38.7M 2.85% 7

Other funds holding BIIB

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $90.7B AUM 77.13% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Ikarian Capital's BIIB Position: Q3 2025 in Review

Ikarian Capital sold out of Biogen (BIIB) in Q3 2025, closing a stake of 21,516 shares — an estimated $2.7M sold.

Ikarian Capital first reported a position in BIIB in Q1 2020 and held it in 14 quarters. The position peaked at $43.6M in Q2 2021. 908 funds tracked by Wall St. Rank hold BIIB as of Q3 2025.

  • Ikarian Capital reported no remaining Biogen position as of Q3 2025 after selling out during the quarter.
  • Ikarian Capital sold 21,516 Biogen shares in Q3 2025, an estimated $2.7M.
  • Ikarian Capital first reported a position in Biogen in Q1 2020 and held it in 14 quarters.
  • Ikarian Capital's Biogen position peaked at $43.6M in Q2 2021.
  • 908 funds tracked by Wall St. Rank held Biogen as of Q3 2025.

Based on Ikarian Capital's 13F filing for Q3 2025, filed 14 Nov 2025.