Put-Call Ratio (Volume) (60-Day)

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

Sutro Biopharma, Inc. (STRO) 60-Day Put-Call Ratio (Volume) data is not available for 2026-10-20.

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Figures for 2026-10-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.7065
Historical Volatility (Parkinson)	0.7411
Implied Volatility (Calls)	1.0714
Implied Volatility (Puts)	1.4154
Implied Volatility (Mean)	1.2434
Put-Call Implied Volatility Ratio	1.3211
Implied Volatility Skew	0.3308
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	1.1765