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	param	t-stat
$ω$	0.9329	7.61
$α$	0.0741	8.89
$β$	0.8786	65.81
$γ_{1}$	0.0293	1.28
$γ_{2}$	-0.0085	-0.25
$γ_{3}$	-0.1024	-4.18
$γ_{4}$	0.1466	6.68
$γ_{5}$	-0.0962	-4.82
$γ_{6}$	0.0740	3.14
$γ_{7}$	-0.0676	-2.56
$γ_{8}$	0.0237	1.10

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AT&T Inc Zero Slope Spline-GARCH Volatility Analysis

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News Impact Curve

Volatility Forecast

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