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.
Tradr 2X Long SNDK Daily ETF (SNXX) had 20-Day Historical Volatility (Parkinson) of 1.7606 for 2026-02-20.
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