Biogen Inc. (BIIB)

Last Closing Price: 135.33 (2025-07-10)

Historical Volatility (Close-to-Close) (20-Day)

Historical Volatility (Close-to-Close): The past volatility of the security over the selected time frame, calculated using the closing price on each trading day.

Biogen Inc. (BIIB) had 20-Day Historical Volatility (Close-to-Close) of 0.2905 for 2025-07-10.