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	param	t-stat
$ω$	1.2986	6.72
$α$	0.0811	10.02
$β$	0.8913	82.93
$γ_{1}$	0.0171	0.58
$γ_{2}$	0.0217	0.44
$γ_{3}$	-0.1350	-3.34
$γ_{4}$	0.2070	5.47
$γ_{5}$	-0.1883	-4.15
$γ_{6}$	0.1153	2.11
$γ_{7}$	-0.0227	-0.50
$γ_{8}$	-0.0734	-1.30

V-Lab

American Express Co Spline-GARCH Volatility Analysis

Volatility Prediction for Monday, January 26th, 2026:30.62% (-0.32%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other American Express Co Analyses