Historical Volatility (Parkinson) (180-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.
Direxion Daily Retail Bull 3x Shares (RETL) had 180-Day Historical Volatility (Parkinson) of 0.4997 for 2026-01-20.
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