Put-Call Ratio (Volume) (20-Day)

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

SPDR S&P 500 ETF (SPY) had 20-Day Put-Call Ratio (Volume) of 1.9321 for 2025-09-12.

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Figures for 2025-09-12

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0783
Historical Volatility (Parkinson)	0.0671
Implied Volatility (Calls)	0.1072
Implied Volatility (Puts)	0.1117
Implied Volatility (Mean)	0.1094
Put-Call Implied Volatility Ratio	1.0426
Implied Volatility Skew	0.0561
Option Statistics
Put-Call Ratio (Volume)	1.9321
Put-Call Ratio (Open Interest)	2.7301