Historical Volatility (Parkinson) (10-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 Real Estate Select Sector SPDR Premium Income ETF (XLRI) had 10-Day Historical Volatility (Parkinson) of 0.0337 for 2026-02-19.

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Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
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Figures for 2026-02-19

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0803
Historical Volatility (Parkinson)	0.0337
Implied Volatility (Calls)	--
Implied Volatility (Puts)	--
Implied Volatility (Mean)	--
Put-Call Implied Volatility Ratio	--
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--