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.

Compass Therapeutics, Inc. (CMPX) had 120-Day Put-Call Ratio (Volume) of 0.4000 for 2026-10-05.

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Figures for 2026-10-05

Volatility Metrics
Historical Volatility (Close-to-Close)	0.9117
Historical Volatility (Parkinson)	0.6401
Implied Volatility (Calls)	1.5827
Implied Volatility (Puts)	1.3969
Implied Volatility (Mean)	1.4898
Put-Call Implied Volatility Ratio	0.8826
Implied Volatility Skew	0.0972
Option Statistics
Put-Call Ratio (Volume)	0.4000
Put-Call Ratio (Open Interest)	2.4602