Biogen Inc. (BIIB)

Last Closing Price: 134.21 (2025-07-11)

Historical Volatility (Parkinson) (120-Day)

Historical Volatility (Parkinson): The past volatility of the security over the selected time frame, calculated using the high and low prices on each trading day.

Biogen Inc. (BIIB) had 120-Day Historical Volatility (Parkinson) of 0.3214 for 2025-07-11.