Put-Call Ratio (Volume) (20-Day)

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

Erasca, Inc. (ERAS) had 20-Day Put-Call Ratio (Volume) of 0.3889 for 2026-10-16.

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Figures for 2026-10-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6839
Historical Volatility (Parkinson)	0.6668
Implied Volatility (Calls)	1.2457
Implied Volatility (Puts)	0.9947
Implied Volatility (Mean)	1.1202
Put-Call Implied Volatility Ratio	0.7985
Implied Volatility Skew	0.1489
Option Statistics
Put-Call Ratio (Volume)	0.3889
Put-Call Ratio (Open Interest)	0.1874