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 4.6058 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2603
Historical Volatility (Parkinson)	0.2177
Implied Volatility (Calls)	0.2690
Implied Volatility (Puts)	0.2614
Implied Volatility (Mean)	0.2652
Put-Call Implied Volatility Ratio	0.9719
Implied Volatility Skew	0.0464
Option Statistics
Put-Call Ratio (Volume)	4.6058
Put-Call Ratio (Open Interest)	1.4787