Put-Call Implied Volatility Ratio (150-Day)

Put-Call Implied Volatility Ratio: The ratio of implied volatilities of the at-the-money puts to the at-the-money calls.

State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF (SPTM) had 150-Day Put-Call Implied Volatility Ratio of 0.9842 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1105
Historical Volatility (Parkinson)	0.0966
Implied Volatility (Calls)	0.1647
Implied Volatility (Puts)	0.1621
Implied Volatility (Mean)	0.1634
Put-Call Implied Volatility Ratio	0.9842
Implied Volatility Skew	0.0526
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.1394