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	param	t-stat
$ω$	0.9363	7.67
$α$	0.0739	8.87
$β$	0.8788	65.76
$γ_{1}$	0.0295	1.29
$γ_{2}$	-0.0082	-0.24
$γ_{3}$	-0.1035	-4.22
$γ_{4}$	0.1477	6.73
$γ_{5}$	-0.0972	-4.86
$γ_{6}$	0.0752	3.16
$γ_{7}$	-0.0683	-2.55
$γ_{8}$	0.0239	1.09

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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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