Put-Call Ratio (Open Interest) (30-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 Portfolio S&P 600 Small Cap ETF (SPSM) had 30-Day Put-Call Ratio (Open Interest) of 0.0839 for 2025-05-30.

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Figures for 2025-05-30

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2297
Historical Volatility (Parkinson)	0.1375
Implied Volatility (Calls)	0.1938
Implied Volatility (Puts)	0.1723
Implied Volatility (Mean)	0.1830
Put-Call Implied Volatility Ratio	0.8890
Implied Volatility Skew	0.0234
Option Statistics
Put-Call Ratio (Volume)	3.0000
Put-Call Ratio (Open Interest)	0.0839