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	param	t-stat
$ω$	1.2993	6.73
$α$	0.0810	10.01
$β$	0.8915	83.07
$γ_{1}$	0.0174	0.59
$γ_{2}$	0.0209	0.43
$γ_{3}$	-0.1340	-3.32
$γ_{4}$	0.2059	5.44
$γ_{5}$	-0.1872	-4.13
$γ_{6}$	0.1143	2.08
$γ_{7}$	-0.0213	-0.47
$γ_{8}$	-0.0797	-1.41

V-Lab

American Express Co Spline-GARCH Volatility Analysis

Volatility Prediction for Monday, February 9th, 2026:23.20% (-0.12%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other American Express Co Analyses