Biogen Inc. (BIIB)

Last Closing Price: 144.86 (2025-09-12)

Historical Volatility (Close-to-Close) (180-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 180-Day Historical Volatility (Close-to-Close) of 0.3481 for 2025-09-12.