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	param	t-stat
$ω$	1.6044	7.54
$α$	0.0848	7.15
$β$	0.8633	41.76
$γ_{1}$	0.0087	0.19
$γ_{2}$	0.0519	0.67
$γ_{3}$	-0.1670	-2.37
$γ_{4}$	0.1721	2.78
$γ_{5}$	-0.0322	-0.76
$γ_{6}$	-0.1233	-2.84
$γ_{7}$	0.1512	2.77
$γ_{8}$	-0.0685	-1.29
$γ_{9}$	0.0488	0.79
$γ_{10}$	-0.0833	-1.40

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UnitedHealth Group Inc Zero Slope Spline-GARCH Volatility Analysis

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