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	param	t-stat
$ω$	1.3485	4.12
$α$	0.1479	3.28
$β$	0.3847	3.44
$γ_{1}$	0.8178	1.62
$γ_{2}$	-1.3192	-1.53
$γ_{3}$	0.7224	0.97
$γ_{4}$	-0.4452	-0.75
$γ_{5}$	0.6825	1.85
$γ_{6}$	-0.7683	-2.13
$γ_{7}$	0.2952	0.76
$γ_{8}$	0.0762	0.28

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Amphastar Pharmaceuticals Inc Zero Slope Spline-GARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:41.80% (+1.27%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Amphastar Pharmaceuticals Inc Analyses