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.
Direxion Daily Dow Jones Internet Bear 3X ETF (WEBS) had 20-Day Historical Volatility (Parkinson) of 0.4591 for 2026-06-04.
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