Put-Call Implied Volatility Ratio (20-Day)

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

ROBO Global Healthcare Technology and Innovation ETF (HTEC) had 20-Day Put-Call Implied Volatility Ratio of 0.9697 for 2026-01-16.

Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2013
Historical Volatility (Parkinson)	0.1041
Implied Volatility (Calls)	0.2234
Implied Volatility (Puts)	0.2166
Implied Volatility (Mean)	0.2200
Put-Call Implied Volatility Ratio	0.9697
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--