Put-Call Implied Volatility Ratio (30-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 30-Day Put-Call Implied Volatility Ratio of 1.0877 for 2026-04-20.

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Figures for 2026-04-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2599
Historical Volatility (Parkinson)	0.1603
Implied Volatility (Calls)	0.2564
Implied Volatility (Puts)	0.2789
Implied Volatility (Mean)	0.2677
Put-Call Implied Volatility Ratio	1.0877
Implied Volatility Skew	0.0920
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--