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.

State Street SPDR Portfolio S&P 500 ETF (SPYM) had 30-Day Put-Call Ratio (Volume) of 0.7233 for 2026-05-21.

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Figures for 2026-05-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1052
Historical Volatility (Parkinson)	0.0822
Implied Volatility (Calls)	0.1308
Implied Volatility (Puts)	0.1617
Implied Volatility (Mean)	0.1462
Put-Call Implied Volatility Ratio	1.2359
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.7233
Put-Call Ratio (Open Interest)	0.7505