Historical Volatility (Parkinson) (90-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 ACHR Daily ETF (ARCX) had 90-Day Historical Volatility (Parkinson) of 1.5178 for 2025-12-15.
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