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	param	t-stat
$ω$	1.7245	6.80
$α$	0.1005	3.46
$β$	0.5719	5.06
$γ_{1}$	1.0353	3.63
$γ_{2}$	-1.5977	-3.84
$γ_{3}$	0.8534	2.76
$γ_{4}$	-0.1820	-0.56
$γ_{5}$	-0.4197	-1.15
$γ_{6}$	0.6346	1.74
$γ_{7}$	-0.6414	-1.73
$γ_{8}$	0.4387	0.91
$γ_{9}$	1.0349	1.05

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Ultragenyx Pharmaceutical Inc Spline-GARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:139.88% (+17.36%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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