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	param	t-stat
$ω$	0.0485	11.09
$α$	0.0678	29.04
$β$	0.9322	433.99
$γ$	0.2102	4.80
$δ$	1.6930	48.28

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WR Grace & Co APARCH Volatility Analysis

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News Impact Curve

Volatility Forecast

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