Historical Volatility (Parkinson) (150-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.
WEBs Health Care XLV Defined Volatility ETF (DVXV) had 150-Day Historical Volatility (Parkinson) of 0.0423 for 2026-02-20.
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