Put-Call Ratio (Volume) (30-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

iShares Biotechnology ETF (IBB) had 30-Day Put-Call Ratio (Volume) of 0.8182 for 2025-08-26.

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Figures for 2025-08-26

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1715
Historical Volatility (Parkinson)	0.1516
Implied Volatility (Calls)	0.1875
Implied Volatility (Puts)	0.1858
Implied Volatility (Mean)	0.1866
Put-Call Implied Volatility Ratio	0.9910
Implied Volatility Skew	-0.0110
Option Statistics
Put-Call Ratio (Volume)	0.8182
Put-Call Ratio (Open Interest)	1.7113