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 0.0000 for 2026-07-17.

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Figures for 2026-07-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.7466
Historical Volatility (Parkinson)	0.7146
Implied Volatility (Calls)	1.0100
Implied Volatility (Puts)	0.9320
Implied Volatility (Mean)	0.9710
Put-Call Implied Volatility Ratio	0.9228
Implied Volatility Skew	0.0539
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.0570