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.

Sutro Biopharma, Inc. (STRO) had 30-Day Put-Call Ratio (Volume) of 1.6518 for 2025-12-04.

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Figures for 2025-12-04

Volatility Metrics
Historical Volatility (Close-to-Close)	1.2430
Historical Volatility (Parkinson)	1.0851
Implied Volatility (Calls)	1.9100
Implied Volatility (Puts)	2.2088
Implied Volatility (Mean)	2.0594
Put-Call Implied Volatility Ratio	1.1565
Implied Volatility Skew	-0.1568
Option Statistics
Put-Call Ratio (Volume)	1.6518
Put-Call Ratio (Open Interest)	0.0663