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Brevan Howard Capital Management’s Biogen BIIB Stock Holding History

Brevan Howard Capital 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
2026
Q1 		– Sell
-71,017
Closed -$12.5M – 2160
2025
Q4 		$12.5M Buy
71,017
+37,506
+112% +$6.13M 0.14% 95
2025
Q3 		$4.69M Buy
33,511
+20,055
+149% +$2.71M 0.02% 253
2025
Q2 		$1.69M Buy
13,456
+5,040
+60% +$628K 0.01% 820
2025
Q1 		$1.15M Buy
8,416
+1,278
+18% +$183K 0.01% 442
2024
Q4 		$1.09M Buy
7,138
+6,064
+565% +$1.02M 0.01% 407
2024
Q3 		$208K Buy
+1,074
New +$225K ﹤0.01% 982
2023
Q4 		– Sell
-1,928
Closed -$496K – 1020
2023
Q3 		$496K Buy
+1,928
New +$516K 0.01% 176

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

Brevan Howard Capital Management's BIIB Position: Q1 2026 in Review

Brevan Howard Capital Management sold out of Biogen (BIIB) in Q1 2026, closing a stake of 71,017 shares — an estimated $12.5M sold.

Brevan Howard Capital Management first reported a position in BIIB in Q3 2023 and held it in 7 quarters. The position peaked at $12.5M in Q4 2025. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Brevan Howard Capital Management reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
  • Brevan Howard Capital Management sold 71,017 Biogen shares in Q1 2026, an estimated $12.5M.
  • Brevan Howard Capital Management first reported a position in Biogen in Q3 2023 and held it in 7 quarters.
  • Brevan Howard Capital Management's Biogen position peaked at $12.5M in Q4 2025.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Brevan Howard Capital Management's 13F filing for Q1 2026, filed 15 May 2026.