Put-Call Ratio (Volume) (30-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

Vanguard S&P 500 ETF (VOO) had 30-Day Put-Call Ratio (Volume) of 1.0231 for 2025-08-01.

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Figures for 2025-08-01

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0908
Historical Volatility (Parkinson)	0.0709
Implied Volatility (Calls)	0.1674
Implied Volatility (Puts)	0.1640
Implied Volatility (Mean)	0.1657
Put-Call Implied Volatility Ratio	0.9797
Implied Volatility Skew	0.0575
Option Statistics
Put-Call Ratio (Volume)	1.0231
Put-Call Ratio (Open Interest)	0.5405