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	param	t-stat
$ω$	0.8683	5.60
$α$	0.1594	6.45
$β$	0.6269	13.06
$γ_{1}$	-0.0868	-0.66
$γ_{2}$	0.2748	1.44
$γ_{3}$	-0.4431	-4.21
$γ_{4}$	0.3065	3.06
$γ_{5}$	0.1389	1.19
$γ_{6}$	-0.4938	-3.02
$γ_{7}$	0.5674	3.23
$γ_{8}$	-0.4190	-2.95
$γ_{9}$	0.2987	1.94

V-Lab

ACI Worldwide Inc Spline-GARCH Volatility Analysis

Volatility Prediction for Thursday, February 12th, 2026:50.25% (+7.85%)

Date Range:

Parameter Estimates

News Impact Curve

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