Historical Volatility (Parkinson) (120-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 Bear 3X ETF (TECS) had 120-Day Historical Volatility (Parkinson) of 0.5705 for 2026-04-17.
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