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	param	t-stat
$ω$	0.9304	7.58
$α$	0.0737	8.88
$β$	0.8792	66.05
$γ_{1}$	0.0293	1.28
$γ_{2}$	-0.0095	-0.28
$γ_{3}$	-0.1005	-4.11
$γ_{4}$	0.1449	6.60
$γ_{5}$	-0.0946	-4.77
$γ_{6}$	0.0725	3.13
$γ_{7}$	-0.0677	-2.63
$γ_{8}$	0.0251	1.18

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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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