Historical Volatility (Parkinson) (30-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.
The Health Care Select Sector SPDR Premium Income Fund (XLVI) had 30-Day Historical Volatility (Parkinson) of 0.0208 for 2025-09-23.
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