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.

Zenas BioPharma, Inc. (ZBIO) had 30-Day Put-Call Ratio (Volume) of 6.1714 for 2025-10-13.

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Figures for 2025-10-13

Volatility Metrics
Historical Volatility (Close-to-Close)	1.3078
Historical Volatility (Parkinson)	1.2597
Implied Volatility (Calls)	1.5254
Implied Volatility (Puts)	1.4379
Implied Volatility (Mean)	1.4817
Put-Call Implied Volatility Ratio	0.9427
Implied Volatility Skew	0.1629
Option Statistics
Put-Call Ratio (Volume)	6.1714
Put-Call Ratio (Open Interest)	0.7980