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	param	t-stat
$ω$	0.7398	3.38
$α$	0.0607	7.96
$β$	0.9037	77.50
$γ_{1}$	-0.0033	-0.05
$γ_{2}$	0.0381	0.37
$γ_{3}$	-0.0538	-0.96
$γ_{4}$	-0.0268	-0.59
$γ_{5}$	0.1434	3.34
$γ_{6}$	-0.2276	-5.08
$γ_{7}$	0.2658	4.85
$γ_{8}$	-0.2420	-3.81
$γ_{9}$	0.1578	2.75
$γ_{10}$	-0.0624	-1.53

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Howmet Aerospace Inc Zero Slope Spline-GARCH Volatility Analysis

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Volatility Forecast

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