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.
Direxion Daily Technology Bull 3X Shares (TECL) had 90-Day Historical Volatility (Parkinson) of 0.3839 for 2025-08-01.
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