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	param	t-stat
$ω$	0.9225	7.45
$α$	0.0722	8.79
$β$	0.8820	67.18
$γ_{1}$	0.0257	1.09
$γ_{2}$	-0.0017	-0.05
$γ_{3}$	-0.1088	-4.37
$γ_{4}$	0.1520	6.88
$γ_{5}$	-0.1016	-4.96
$γ_{6}$	0.0795	3.19
$γ_{7}$	-0.0696	-2.42
$γ_{8}$	0.0228	0.96

V-Lab

AT&T Inc Zero Slope Spline-GARCH Volatility Analysis

Volatility Prediction for Wednesday, January 14th, 2026:21.91% (+1.11%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other AT&T Inc Analyses