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	param	t-stat
$ω$	1.2199	8.29
$α$	0.0538	5.61
$β$	0.9117	54.72
$γ_{1}$	0.0296	0.99
$γ_{2}$	0.0000	0.00
$γ_{3}$	-0.1217	-3.26
$γ_{4}$	0.1714	4.90
$γ_{5}$	-0.1362	-3.41
$γ_{6}$	0.1281	2.70
$γ_{7}$	-0.1157	-2.15
$γ_{8}$	0.0627	1.23
$γ_{9}$	-0.0275	-0.76

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Wal-Mart Stores Inc Zero Slope Spline-GARCH Volatility Analysis

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News Impact Curve

Volatility Forecast

Parameter Estimates

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