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Suvretta Capital Management’s Biogen BIIB Stock Holding History

Suvretta 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
-132,290
Closed -$23.3M – 91
2025
Q4 		$23.3M Sell
132,290
-35,900
-21% -$5.87M 0.48% 54
2025
Q3 		$23.6M Buy
168,190
+16,300
+11% +$2.2M 0.6% 51
2025
Q2 		$19.1M Buy
151,890
+31,154
+26% +$3.88M 0.58% 43
2025
Q1 		$16.5M Buy
120,736
+5,300
+5% +$758K 0.61% 43
2024
Q4 		$17.7M Buy
115,436
+85,490
+285% +$14.4M 0.6% 47
2024
Q3 		$5.8M Buy
+29,946
New +$6.26M 0.19% 61
2023
Q1 		– Sell
-1,430
Closed -$396K – 97
2022
Q4 		$396K Buy
+1,430
New +$404K 0.02% 78
2020
Q2 		– Sell
-153,670
Closed -$48.6M – 85
2020
Q1 		$48.6M Buy
+153,670
New +$46.6M 1.31% 28

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

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

Suvretta Capital Management sold out of Biogen (BIIB) in Q1 2026, closing a stake of 132,290 shares — an estimated $23.3M sold.

Suvretta Capital Management first reported a position in BIIB in Q1 2020 and held it in 8 quarters. The position peaked at $48.6M in Q1 2020. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Suvretta Capital Management reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
  • Suvretta Capital Management sold 132,290 Biogen shares in Q1 2026, an estimated $23.3M.
  • Suvretta Capital Management first reported a position in Biogen in Q1 2020 and held it in 8 quarters.
  • Suvretta Capital Management's Biogen position peaked at $48.6M in Q1 2020.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

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