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	param	t-stat
$ω$	0.9307	7.56
$α$	0.0741	8.97
$β$	0.8785	65.36
$γ_{1}$	0.0292	1.26
$γ_{2}$	-0.0063	-0.18
$γ_{3}$	-0.1083	-4.41
$γ_{4}$	0.1534	7.00
$γ_{5}$	-0.1008	-4.86
$γ_{6}$	0.0728	2.65
$γ_{7}$	-0.0531	-1.26
$γ_{8}$	-0.0213	-0.28

V-Lab

AT&T Inc Spline-GARCH Volatility Analysis

Volatility Prediction for Friday, February 20th, 2026:27.05% (-1.30%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other AT&T Inc Analyses