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.

Ionis Pharmaceuticals, Inc. (IONS) had 120-Day Put-Call Ratio (Volume) of 2.2943 for 2026-04-20.

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Figures for 2026-04-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3053
Historical Volatility (Parkinson)	0.3168
Implied Volatility (Calls)	0.4433
Implied Volatility (Puts)	0.4190
Implied Volatility (Mean)	0.4312
Put-Call Implied Volatility Ratio	0.9453
Implied Volatility Skew	-0.0015
Option Statistics
Put-Call Ratio (Volume)	2.2943
Put-Call Ratio (Open Interest)	0.4166