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 9.2620 for 2025-05-27.

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Figures for 2025-05-27

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3480
Historical Volatility (Parkinson)	0.2451
Implied Volatility (Calls)	0.2767
Implied Volatility (Puts)	0.2850
Implied Volatility (Mean)	0.2808
Put-Call Implied Volatility Ratio	1.0302
Implied Volatility Skew	0.0822
Option Statistics
Put-Call Ratio (Volume)	9.2620
Put-Call Ratio (Open Interest)	0.7765