Historical Volatility (Parkinson) (20-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.
MEDIROM Healthcare Technologies Inc. Unsponsored ADR (MRM) had 20-Day Historical Volatility (Parkinson) of 0.5440 for 2026-01-20.
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