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	param	t-stat
$ω$	1.4991	3.71
$α$	0.0913	9.07
$β$	0.8730	69.14
$γ_{1}$	0.0205	0.50
$γ_{2}$	0.0318	0.58
$γ_{3}$	-0.1278	-4.45
$γ_{4}$	0.1477	4.80
$γ_{5}$	-0.1335	-3.95
$γ_{6}$	0.0917	2.92
$γ_{7}$	-0.0256	-0.88
$γ_{8}$	-0.0126	-0.56

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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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