Put-Call Ratio (Volume) (150-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

ACI Worldwide, Inc. (ACIW) had 150-Day Put-Call Ratio (Volume) of 2.0000 for 2026-01-16.

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Figures for 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2640
Historical Volatility (Parkinson)	0.2629
Implied Volatility (Calls)	0.3726
Implied Volatility (Puts)	0.3447
Implied Volatility (Mean)	0.3586
Put-Call Implied Volatility Ratio	0.9253
Implied Volatility Skew	0.0668
Option Statistics
Put-Call Ratio (Volume)	2.0000
Put-Call Ratio (Open Interest)	0.2519