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Samlyn Capital’s Biogen BIIB Stock Holding History

Samlyn Capital’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
2020
Q4 		– Sell
-91,000
Closed -$25.8M – 161
2020
Q3 		$25.8M Buy
+91,000
New +$25.4M 0.46% 67
2019
Q2 		– Sell
-587,900
Closed -$139M – 119
2019
Q1 		$139M Buy
+587,900
New +$185M 3.28% 5
2016
Q3 		– Sell
-30,000
Closed -$7.25M – 114
2016
Q2 		$7.25M Sell
30,000
-32,500
-52% -$8.57M 0.17% 89
2016
Q1 		$16.3M Buy
+62,500
New +$16.5M 0.35% 80

Other funds holding BIIB

Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
ClearBridge Investments
ClearBridge Investments New York $121B AUM 27.52% 1-Year Est. Return

Samlyn Capital's BIIB Position: Q4 2023 in Review

Samlyn Capital sold out of Biogen (BIIB) in Q4 2023, closing a stake of 420,355 shares — an estimated $108M sold.

Samlyn Capital first reported a position in BIIB in Q2 2013 and held it in 30 quarters. The position peaked at $193M in Q2 2017. 1,003 funds tracked by Wall St. Rank hold BIIB as of Q4 2023.

  • Samlyn Capital reported no remaining Biogen position as of Q4 2023 after selling out during the quarter.
  • Samlyn Capital sold 420,355 Biogen shares in Q4 2023, an estimated $108M.
  • Samlyn Capital first reported a position in Biogen in Q2 2013 and held it in 30 quarters.
  • Samlyn Capital's Biogen position peaked at $193M in Q2 2017.
  • 1,003 funds tracked by Wall St. Rank held Biogen as of Q4 2023.

Based on Samlyn Capital's 13F filing for Q4 2023, filed 14 Feb 2024.