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 0.5320 for 2025-10-31.

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Figures for 2025-10-31

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1394
Historical Volatility (Parkinson)	0.1115
Implied Volatility (Calls)	0.1561
Implied Volatility (Puts)	0.1439
Implied Volatility (Mean)	0.1500
Put-Call Implied Volatility Ratio	0.9220
Implied Volatility Skew	0.0371
Option Statistics
Put-Call Ratio (Volume)	0.5320
Put-Call Ratio (Open Interest)	0.5272