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	param	t-stat
$ω$	0.9257	7.50
$α$	0.0743	8.89
$β$	0.8782	65.57
$γ_{1}$	0.0276	1.18
$γ_{2}$	-0.0047	-0.14
$γ_{3}$	-0.1068	-4.32
$γ_{4}$	0.1504	6.84
$γ_{5}$	-0.0996	-4.91
$γ_{6}$	0.0773	3.16
$γ_{7}$	-0.0687	-2.46
$γ_{8}$	0.0226	0.99

V-Lab

AT&T Inc Zero Slope Spline-GARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:29.66% (-1.27%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other AT&T Inc Analyses