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Braidwell’s Biogen BIIB Stock Holding History

Braidwell’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
-115,700
Closed -$20.4M – 91
2025
Q4 		$20.4M Buy
+115,700
New +$18.9M 0.65% 52
2023
Q3 		– Sell
-121,942
Closed -$34.7M – 88
2023
Q2 		$34.7M Sell
121,942
-98,800
-45% -$29.4M 1.14% 33
2023
Q1 		$61.4M Sell
220,742
-31,800
-13% -$8.8M 2.02% 13
2022
Q4 		$69.9M Buy
+252,542
New +$71.3M 2.34% 9

Other funds holding BIIB

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T 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 $580B AUM 38.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Braidwell's BIIB Position: Q1 2026 in Review

Braidwell sold out of Biogen (BIIB) in Q1 2026, closing a stake of 115,700 shares — an estimated $20.4M sold.

Braidwell first reported a position in BIIB in Q4 2022 and held it in 4 quarters. The position peaked at $69.9M in Q4 2022. 1,011 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Braidwell reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
  • Braidwell sold 115,700 Biogen shares in Q1 2026, an estimated $20.4M.
  • Braidwell first reported a position in Biogen in Q4 2022 and held it in 4 quarters.
  • Braidwell's Biogen position peaked at $69.9M in Q4 2022.
  • 1,011 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

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