Market capitalization is the total value the stock market puts on a company: its share price multiplied by the number of shares outstanding. Each point here is the share count reported in a filing multiplied by the closing price on that filing date, adjusted for later stock splits, so the history moves when a new filing arrives rather than with each day's trading. A larger market cap means investors collectively value the company more highly; by itself it says nothing about profit or debt. Annual points keep the latest observation in each calendar year.
BIOGEN INC. market cap for the quarter ending 2026-04-27 was $26.67B, a 50.31% increase year-over-year.
BIOGEN INC. market cap for the quarter ending 2026-02-04 was $27.21B, a 33.38% increase year-over-year.
BIOGEN INC. market cap for the quarter ending 2025-12-31 was $25.84B, a 15.92% increase year-over-year.
BIOGEN INC. market cap for the quarter ending 2025-10-29 was $21.73B, a 18.73% decline year-over-year.
BIOGEN INC. market cap for fiscal 2026 was $26.67B.
BIOGEN INC. market cap for fiscal 2025 was $25.84B, a 15.92% increase from fiscal 2024.
BIOGEN INC. market cap for fiscal 2024 was $22.3B, a 40.54% decline from fiscal 2023.
BIOGEN INC. market cap for fiscal 2023 was $37.5B, a 5.97% decline from fiscal 2022.