Put-Call Ratio (Open Interest) (90-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

Enanta Pharmaceuticals, Inc. (ENTA) had 90-Day Put-Call Ratio (Open Interest) of 0.0451 for 2026-01-20.

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Figures for 2026-01-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.5078
Historical Volatility (Parkinson)	0.6414
Implied Volatility (Calls)	0.9125
Implied Volatility (Puts)	0.9729
Implied Volatility (Mean)	0.9427
Put-Call Implied Volatility Ratio	1.0662
Implied Volatility Skew	0.1016
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.0451