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 SPDR MSCI USA StrategicFactors ETF (QUS) had 180-Day Historical Volatility (Parkinson) of 0.0649 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0866
Historical Volatility (Parkinson)	0.0649
Implied Volatility (Calls)	0.1559
Implied Volatility (Puts)	0.1460
Implied Volatility (Mean)	0.1509
Put-Call Implied Volatility Ratio	0.9364
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--