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	param	t-stat
$ω$	0.1776	9.53
$α$	0.0844	15.19
$β$	0.8533	96.96
$γ$	0.3913	9.39
$δ$	1.0973	14.19

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Medco Health Solutions Inc APARCH Volatility Analysis

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Date Range:

Parameter Estimates

News Impact Curve

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