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	param	t-stat
$ω$	0.0307	31.05
$α$	0.0676	39.84
$β$	0.9324	641.73
$γ$	0.6468	23.66
$δ$	1.1863	38.51

V-Lab

American Express Co APARCH Volatility Analysis

Volatility Prediction for Thursday, February 19th, 2026:31.11% (-1.39%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other American Express Co Analyses