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Maven Securities’s Biogen BIIB Stock Holding History

Maven Securities’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
2025
Q3 		– Sell
-12,400
Closed -$1.56M – 489
2025
Q2 		$1.56M Buy
+12,400
New +$1.55M 0.04% 354
2024
Q1 		– Sell
-2,800
Closed -$725K – 430
2023
Q4 		$725K Buy
2,800
+800
+40% +$196K 0.02% 559
2023
Q3 		$514K Buy
+2,000
New +$535K 0.01% 806
2023
Q1 		– Sell
-1,000
Closed -$277K – 925
2022
Q4 		$277K Sell
1,000
-1,400
-58% -$395K 0.01% 723
2022
Q3 		$641K Buy
+2,400
New +$510K 0.01% 697
2022
Q2 		– Sell
-1,100
Closed -$232K – 896
2022
Q1 		$232K Sell
1,100
-100
-8% -$21.7K 0.01% 762
2021
Q4 		$288K Buy
+1,200
New +$309K 0.01% 703
2021
Q2 		– Sell
-1,800
Closed -$504K – 1064
2021
Q1 		$504K Buy
+1,800
New +$485K 0.02% 651
2020
Q3 		– Sell
-1,100
Closed -$294K – 614
2020
Q2 		$294K Buy
+1,100
New +$331K 0.02% 409

Other funds holding BIIB

BlackRock
BlackRock New York $5.72T AUM 30.48% 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 $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 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 $1.56T AUM 27.86% 1-Year Est. Return

Maven Securities's BIIB Position: Q1 2026 in Review

Maven Securities sold out of Biogen (BIIB) in Q1 2026, closing a stake of 13,069 shares — an estimated $2.3M sold.

Maven Securities first reported a position in BIIB in Q4 2020 and held it in 6 quarters. The position peaked at $2.3M in Q4 2025. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Maven Securities reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
  • Maven Securities sold 13,069 Biogen shares in Q1 2026, an estimated $2.3M.
  • Maven Securities first reported a position in Biogen in Q4 2020 and held it in 6 quarters.
  • Maven Securities's Biogen position peaked at $2.3M in Q4 2025.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Maven Securities's 13F filing for Q1 2026, filed 15 May 2026.