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	param	t-stat
$ω$	1.0285	6.18
$α$	0.3946	3.25
$β$	0.0980	1.32
$γ_{1}$	0.0458	0.48
$γ_{2}$	-0.0702	-0.47
$γ_{3}$	0.0256	0.28

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Portola Pharmaceuticals LLC Zero Slope Spline-GARCH Volatility Analysis

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Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Portola Pharmaceuticals LLC Analyses