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	param	t-stat
$ω$	0.0347	16.69
$α$	0.0165	12.88
$β$	0.9284	748.71
$γ$	0.1042	26.73

V-Lab

American Express Co GJR-GARCH Volatility Analysis

Volatility Prediction for Tuesday, February 24th, 2026:50.24% (+20.63%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other American Express Co Analyses