White Mountains Insurance Group, Ltd. (WTM)

Last Closing Price: 2019.44 (2026-10-05)

Historical Volatility (Close-to-Close) (60-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.

White Mountains Insurance Group, Ltd. (WTM) had 60-Day Historical Volatility (Close-to-Close) of 0.1263 for 2026-10-05.