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.
First Trust Nasdaq Lux Digital Health Solutions ETF (EKG) had 90-Day Historical Volatility (Parkinson) of 0.0681 for 2026-01-20.
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