Put-Call Ratio (Volume) (120-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

Sutro Biopharma, Inc. (STRO) 120-Day Put-Call Ratio (Volume) data is not available for 2026-07-20.

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Figures for 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.8912
Historical Volatility (Parkinson)	0.9200
Implied Volatility (Calls)	1.3619
Implied Volatility (Puts)	1.2354
Implied Volatility (Mean)	1.2986
Put-Call Implied Volatility Ratio	0.9071
Implied Volatility Skew	0.0538
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	1.0000