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Silverarc Capital Management’s Biogen BIIB Stock Holding History

Silverarc 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
2021
Q2 		– Sell
-10,000
Closed -$2.8M – 100
2021
Q1 		$2.8M Sell
10,000
-20,000
-67% -$5.39M 1.53% 27
2020
Q4 		$7.35M Buy
+30,000
New +$7.74M 4.27% 2

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

Silverarc Capital Management's BIIB Position: Q1 2026 in Review

Silverarc Capital Management reduced its Biogen (BIIB) stake by 32% in Q1 2026, selling an estimated $4.5M and leaving 50,967 shares worth $9.34M. The position accounts for 0.95% of the portfolio, ranked #28.

Silverarc Capital Management first reported a position in BIIB in Q4 2020 and has held it in 17 quarters since. The position peaked at $13.3M in Q4 2025. 1,004 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Silverarc Capital Management held 50,967 shares of Biogen worth $9.34M as of Q1 2026.
  • Silverarc Capital Management sold 24,445 Biogen shares in Q1 2026, an estimated $4.5M.
  • Biogen made up 0.95% of Silverarc Capital Management's portfolio in Q1 2026, its #28 holding.
  • Silverarc Capital Management first reported a position in Biogen in Q4 2020 and has held it in 17 quarters since.
  • Silverarc Capital Management's Biogen position peaked at $13.3M in Q4 2025.
  • 1,004 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Silverarc Capital Management's 13F filing for Q1 2026, filed 14 May 2026.