Historical Volatility (Parkinson) (180-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.
State Street Health Care Select Sector SPDR ETF ETF (XLV) had 180-Day Historical Volatility (Parkinson) of 0.1225 for 2025-12-15.
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