Historical Volatility (Parkinson) (20-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.

Visa Inc. (V) had 20-Day Historical Volatility (Parkinson) of 0.1524 for 2025-08-04.

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Figures for 2025-08-04

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1440
Historical Volatility (Parkinson)	0.1524
Implied Volatility (Calls)	0.1996
Implied Volatility (Puts)	0.2021
Implied Volatility (Mean)	0.2009
Put-Call Implied Volatility Ratio	1.0122
Implied Volatility Skew	0.0561
Option Statistics
Put-Call Ratio (Volume)	0.3999
Put-Call Ratio (Open Interest)	0.7361