Historical Volatility (Parkinson) (10-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.
Direxion Daily UNH Bull 2X ETF (UNHU) had 10-Day Historical Volatility (Parkinson) of 0.3740 for 2026-05-19.
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