Put-Call Ratio (Volume) (60-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 60-Day Put-Call Ratio (Volume) of 1.1936 for 2026-08-21.

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Figures for 2026-08-21

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2548
Historical Volatility (Parkinson)	0.1846
Implied Volatility (Calls)	0.2322
Implied Volatility (Puts)	0.2443
Implied Volatility (Mean)	0.2383
Put-Call Implied Volatility Ratio	1.0522
Implied Volatility Skew	0.0243
Option Statistics
Put-Call Ratio (Volume)	1.1936
Put-Call Ratio (Open Interest)	0.3270