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.

Achieve Life Sciences, Inc. (ACHV) had 20-Day Put-Call Ratio (Volume) of 0.0000 for 2026-10-19.

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Figures for 2026-10-19

Volatility Metrics
Historical Volatility (Close-to-Close)	0.6521
Historical Volatility (Parkinson)	0.5802
Implied Volatility (Calls)	0.8873
Implied Volatility (Puts)	2.4543
Implied Volatility (Mean)	1.6708
Put-Call Implied Volatility Ratio	2.7660
Implied Volatility Skew	1.2902
Option Statistics
Put-Call Ratio (Volume)	0.0000
Put-Call Ratio (Open Interest)	0.6317