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Sofinnova Investments’s Biogen BIIB Stock Holding History

Sofinnova Investments’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
Q2 		– Sell
-229,521
Closed -$42.1M – 63
2026
Q1 		$42.1M Buy
+229,521
New +$42.3M 1.6% 19
2023
Q2 		– Sell
-132,600
Closed -$36.9M – 54
2023
Q1 		$36.9M Buy
+132,600
New +$36.7M 2.36% 11
2021
Q4 		– Sell
-33,220
Closed -$9.4M – 74
2021
Q3 		$9.4M Sell
33,220
-77,380
-70% -$25.4M 0.56% 38
2021
Q2 		$38.3M Buy
+110,600
New +$33.5M 2.21% 11
2020
Q2 		– Sell
-52,628
Closed -$16.6M – 80
2020
Q1 		$16.6M Sell
52,628
-11,083
-17% -$3.36M 1.54% 16
2019
Q4 		$18.9M Buy
+63,711
New +$17.7M 1.36% 15

Other funds holding BIIB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
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
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
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Sofinnova Investments's BIIB Position: Q2 2026 in Review

Sofinnova Investments sold out of Biogen (BIIB) in Q2 2026, closing a stake of 229,521 shares — an estimated $42.1M sold.

Sofinnova Investments first reported a position in BIIB in Q4 2019 and held it in 6 quarters. The position peaked at $42.1M in Q1 2026. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Sofinnova Investments reported no remaining Biogen position as of Q2 2026 after selling out during the quarter.
  • Sofinnova Investments sold 229,521 Biogen shares in Q2 2026, an estimated $42.1M.
  • Sofinnova Investments first reported a position in Biogen in Q4 2019 and held it in 6 quarters.
  • Sofinnova Investments's Biogen position peaked at $42.1M in Q1 2026.
  • 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Sofinnova Investments's 13F filing for Q2 2026, filed 14 Aug 2026.