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 Short AAOI Daily ETF (AAOZ) had 20-Day Historical Volatility (Parkinson) of 1.8916 for 2026-08-31.
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