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.
Tuttle Capital Heavy Assets Low Obsolescence ETF (HALX) had 20-Day Historical Volatility (Parkinson) of 0.0565 for 2026-07-06.
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