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GF Fund Management’s Biogen BIIB Stock Holding History

GF Fund 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 		$1.34M Buy
7,293
+413
+6% +$76.1K 0.02% 180
2025
Q4 		$1.21M Sell
6,880
-29,529
-81% -$4.82M 0.02% 191
2025
Q3 		$5.1M Sell
36,409
-44
-0.1% -$5.95K 0.09% 141
2025
Q2 		$4.58M Buy
36,453
+1,018
+3% +$127K 0.09% 148
2025
Q1 		$4.85M Buy
35,435
+1,193
+3% +$171K 0.11% 140
2024
Q4 		$5.24M Buy
+34,242
New +$5.78M 0.11% 139

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

GF Fund Management's BIIB Position: Q1 2026 in Review

GF Fund Management increased its Biogen (BIIB) stake by 6% in Q1 2026, buying an estimated $76.1K and bringing the position to 7,293 shares worth $1.34M. The position accounts for 0.02% of the portfolio, ranked #180.

GF Fund Management first reported a position in BIIB in Q4 2024 and has held it in 6 quarters since. The position peaked at $5.24M in Q4 2024. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • GF Fund Management held 7,293 shares of Biogen worth $1.34M as of Q1 2026.
  • GF Fund Management bought 413 Biogen shares in Q1 2026, an estimated $76.1K.
  • Biogen made up 0.02% of GF Fund Management's portfolio in Q1 2026, its #180 holding.
  • GF Fund Management first reported a position in Biogen in Q4 2024 and has held it in 6 quarters since.
  • GF Fund Management's Biogen position peaked at $5.24M in Q4 2024.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on GF Fund Management's 13F filing for Q1 2026, filed 15 Apr 2026.