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	param	t-stat
$ω$	1.3014	6.72
$α$	0.0810	10.03
$β$	0.8917	83.55
$γ_{1}$	0.0178	0.60
$γ_{2}$	0.0200	0.41
$γ_{3}$	-0.1329	-3.29
$γ_{4}$	0.2050	5.40
$γ_{5}$	-0.1865	-4.11
$γ_{6}$	0.1144	2.07
$γ_{7}$	-0.0229	-0.50
$γ_{8}$	-0.0747	-1.34

V-Lab

American Express Co Spline-GARCH Volatility Analysis

Volatility Prediction for Friday, February 20th, 2026:26.16% (-0.64%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other American Express Co Analyses