Put-Call Ratio (Open Interest) (10-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.

COMPASS Pathways PLC Sponsored ADR (CMPS) had 10-Day Put-Call Ratio (Open Interest) of 0.1695 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.8650
Historical Volatility (Parkinson)	0.7320
Implied Volatility (Calls)	0.8945
Implied Volatility (Puts)	0.8871
Implied Volatility (Mean)	0.8908
Put-Call Implied Volatility Ratio	0.9917
Implied Volatility Skew	-0.1835
Option Statistics
Put-Call Ratio (Volume)	0.2645
Put-Call Ratio (Open Interest)	0.1695