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.

Catalyst Pharmaceuticals, Inc. (CPRX) had 20-Day Put-Call Ratio (Volume) of 0.0799 for 2026-03-06.

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Figures for 2026-03-06

Volatility Metrics
Historical Volatility (Close-to-Close)	0.4242
Historical Volatility (Parkinson)	0.4407
Implied Volatility (Calls)	0.5215
Implied Volatility (Puts)	0.5227
Implied Volatility (Mean)	0.5221
Put-Call Implied Volatility Ratio	1.0023
Implied Volatility Skew	--
Option Statistics
Put-Call Ratio (Volume)	0.0799
Put-Call Ratio (Open Interest)	0.3611