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 NVDA Bear 1X ETF (NVDD) had 20-Day Historical Volatility (Parkinson) of 0.3153 for 2026-06-03.
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