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Marathon Trading Investment Management’s Biogen BIIB Stock Holding History

Marathon Trading Investment Management’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
2020
Q4 		– Sell
-5,100
Closed -$1.45M – 349
2020
Q3 		$1.45M Buy
+5,100
New +$1.42M 0.11% 125

Other funds holding BIIB

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Marathon Trading Investment Management's BIIB Position: Q1 2026 in Review

Marathon Trading Investment Management sold out of Biogen (BIIB) in Q1 2026, closing a stake of 1,450 shares — an estimated $255K sold.

Marathon Trading Investment Management first reported a position in BIIB in Q1 2019 and held it in 8 quarters. The position peaked at $2.22M in Q4 2024. 1,009 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Marathon Trading Investment Management reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
  • Marathon Trading Investment Management sold 1,450 Biogen shares in Q1 2026, an estimated $255K.
  • Marathon Trading Investment Management first reported a position in Biogen in Q1 2019 and held it in 8 quarters.
  • Marathon Trading Investment Management's Biogen position peaked at $2.22M in Q4 2024.
  • 1,009 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Marathon Trading Investment Management's 13F filing for Q1 2026, filed 14 May 2026.