Put-Call Ratio (Volume) (180-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 180-Day Put-Call Ratio (Volume) of 0.0000 for 2026-08-20.

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Figures for 2026-08-20

Volatility Metrics
Historical Volatility (Close-to-Close)	1.5926
Historical Volatility (Parkinson)	0.7712
Implied Volatility (Calls)	1.1805
Implied Volatility (Puts)	0.8770
Implied Volatility (Mean)	1.0288
Put-Call Implied Volatility Ratio	0.7429
Implied Volatility Skew	0.1557
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.0491