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.
Defiance Pure Space Daily 2X Strategy ETF (SPCL) had 20-Day Historical Volatility (Parkinson) of 0.7953 for 2026-06-08.
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