Historical Volatility (Parkinson) (60-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.

UnitedHealth Group Incorporated (UNH) had 60-Day Historical Volatility (Parkinson) of 0.4212 for 2025-05-22.

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Figures for 2025-05-22

Volatility Metrics
Historical Volatility (Close-to-Close)	0.9128
Historical Volatility (Parkinson)	0.4212
Implied Volatility (Calls)	0.5425
Implied Volatility (Puts)	0.5290
Implied Volatility (Mean)	0.5357
Put-Call Implied Volatility Ratio	0.9750
Implied Volatility Skew	0.0316
Option Statistics
Put-Call Ratio (Volume)	0.3207
Put-Call Ratio (Open Interest)	0.5182