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	param	t-stat
$ω$	1.4939	3.70
$α$	0.0899	9.02
$β$	0.8752	70.12
$γ_{1}$	0.0207	0.50
$γ_{2}$	0.0308	0.56
$γ_{3}$	-0.1258	-4.37
$γ_{4}$	0.1453	4.74
$γ_{5}$	-0.1312	-3.90
$γ_{6}$	0.0898	2.86
$γ_{7}$	-0.0229	-0.78
$γ_{8}$	-0.0158	-0.70

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HeidelbergCement AG Zero Slope Spline-GARCH Volatility Analysis

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News Impact Curve

Volatility Forecast

Parameter Estimates

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