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.

SPDR S&P Biotech ETF (XBI) had 30-Day Put-Call Ratio (Volume) of 1.9422 for 2025-08-29.

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Figures for 2025-08-29

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1877
Historical Volatility (Parkinson)	0.1733
Implied Volatility (Calls)	0.2480
Implied Volatility (Puts)	0.2617
Implied Volatility (Mean)	0.2548
Put-Call Implied Volatility Ratio	1.0553
Implied Volatility Skew	0.0323
Option Statistics
Put-Call Ratio (Volume)	1.9422
Put-Call Ratio (Open Interest)	16.8322