Put-Call Ratio (Open Interest) (180-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

SPDR S&P 500 ETF (SPY) had 180-Day Put-Call Ratio (Open Interest) of 2.4863 for 2026-01-30.

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Figures for 2026-01-30

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1109
Historical Volatility (Parkinson)	0.0963
Implied Volatility (Calls)	0.1718
Implied Volatility (Puts)	0.1704
Implied Volatility (Mean)	0.1711
Put-Call Implied Volatility Ratio	0.9920
Implied Volatility Skew	0.0817
Option Statistics
Put-Call Ratio (Volume)	2.7672
Put-Call Ratio (Open Interest)	2.4863