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.

Eton Pharmaceuticals, Inc. (ETON) had 120-Day Put-Call Ratio (Volume) of 0.4938 for 2026-10-19.

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Figures for 2026-10-19

Volatility Metrics
Historical Volatility (Close-to-Close)	0.8444
Historical Volatility (Parkinson)	0.5795
Implied Volatility (Calls)	0.7431
Implied Volatility (Puts)	0.6654
Implied Volatility (Mean)	0.7043
Put-Call Implied Volatility Ratio	0.8954
Implied Volatility Skew	0.0266
Option Statistics
Put-Call Ratio (Volume)	0.4938
Put-Call Ratio (Open Interest)	0.3959