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Biogen (BIIB) Shares Outstanding (Weighted Average) (2016 - 2025)

Historic Shares Outstanding (Weighted Average) for Biogen (BIIB) over the last 17 years, with Q4 2025 value amounting to $146.5 million.

  • Biogen's Shares Outstanding (Weighted Average) rose 61.81% to $146.5 million in Q4 2025 from the same period last year, while for Dec 2025 it was $146.5 million, marking a year-over-year increase of 61.81%. This contributed to the annual value of $146.5 million for FY2025, which is 61.81% up from last year.
  • According to the latest figures from Q4 2025, Biogen's Shares Outstanding (Weighted Average) is $146.5 million, which was up 61.81% from $146.6 million recorded in Q3 2025.
  • In the past 5 years, Biogen's Shares Outstanding (Weighted Average) registered a high of $151.9 million during Q1 2021, and its lowest value of $144.4 million during Q1 2023.
  • Over the past 5 years, Biogen's median Shares Outstanding (Weighted Average) value was $146.0 million (recorded in 2022), while the average stood at $146.6 million.
  • Its Shares Outstanding (Weighted Average) has fluctuated over the past 5 years, first crashed by 1209.49% in 2021, then skyrocketed by 62.2% in 2024.
  • Over the past 5 years, Biogen's Shares Outstanding (Weighted Average) (Quarter) stood at $149.1 million in 2021, then decreased by 2.55% to $145.3 million in 2022, then fell by 0.41% to $144.7 million in 2023, then increased by 0.62% to $145.6 million in 2024, then rose by 0.62% to $146.5 million in 2025.
  • Its last three reported values are $146.5 million in Q4 2025, $146.6 million for Q3 2025, and $146.5 million during Q2 2025.