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	param	t-stat
$ω$	0.4738	11.26
$α$	0.2164	19.78
$β$	0.7777	72.15
$γ$	0.5389	2.81

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Houghton Mifflin Harcourt Co AGARCH Volatility Analysis

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Parameter Estimates

News Impact Curve

Volatility Forecasts

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