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.

State Street SPDR S&P Biotech ETF (XBI) had 30-Day Put-Call Ratio (Volume) of 1.8975 for 2025-12-04.

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Figures for 2025-12-04

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2478
Historical Volatility (Parkinson)	0.2347
Implied Volatility (Calls)	0.3063
Implied Volatility (Puts)	0.2945
Implied Volatility (Mean)	0.3004
Put-Call Implied Volatility Ratio	0.9615
Implied Volatility Skew	0.0433
Option Statistics
Put-Call Ratio (Volume)	1.8975
Put-Call Ratio (Open Interest)	0.5408