Put-Call Implied Volatility Ratio (90-Day)

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

Vanguard S&P Mid-Cap 400 Index Fund ETF Shares (IVOO) had 90-Day Put-Call Implied Volatility Ratio of 1.0843 for 2026-10-16.

Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
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Figures for 2026-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1219
Historical Volatility (Parkinson)	0.0964
Implied Volatility (Calls)	0.1553
Implied Volatility (Puts)	0.1684
Implied Volatility (Mean)	0.1619
Put-Call Implied Volatility Ratio	1.0843
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.0000