Put-Call Implied Volatility Ratio (180-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 Small-Cap 600 Growth Index Fund ETF Shares (VIOG) had 180-Day Put-Call Implied Volatility Ratio of 1.0753 for 2026-05-21.

Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
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Figures for 2026-05-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1793
Historical Volatility (Parkinson)	0.1358
Implied Volatility (Calls)	0.2259
Implied Volatility (Puts)	0.2429
Implied Volatility (Mean)	0.2344
Put-Call Implied Volatility Ratio	1.0753
Implied Volatility Skew	0.0599
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--