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.
Defiance Daily Target 2X Long SOUN ETF (SOUX) had 10-Day Historical Volatility (Parkinson) of 1.2835 for 2026-02-20.
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