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	param	t-stat
$ω$	1.3011	6.72
$α$	0.0809	10.03
$β$	0.8918	83.58
$γ_{1}$	0.0178	0.60
$γ_{2}$	0.0201	0.41
$γ_{3}$	-0.1329	-3.29
$γ_{4}$	0.2050	5.40
$γ_{5}$	-0.1865	-4.11
$γ_{6}$	0.1142	2.07
$γ_{7}$	-0.0225	-0.49
$γ_{8}$	-0.0763	-1.38

V-Lab

American Express Co Spline-GARCH Volatility Analysis

Volatility Prediction for Monday, February 23rd, 2026:25.46% (-0.60%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other American Express Co Analyses