Historical Volatility (Parkinson) (150-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 150-Day Historical Volatility (Parkinson) of 1.3159 for 2026-02-20.
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