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	param	t-stat
$ω$	0.9269	7.53
$α$	0.0739	8.89
$β$	0.8788	65.89
$γ_{1}$	0.0285	1.24
$γ_{2}$	-0.0079	-0.23
$γ_{3}$	-0.1020	-4.17
$γ_{4}$	0.1461	6.66
$γ_{5}$	-0.0957	-4.81
$γ_{6}$	0.0735	3.14
$γ_{7}$	-0.0677	-2.59
$γ_{8}$	0.0243	1.13

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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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