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	param	t-stat
$ω$	0.8892	6.76
$α$	0.1737	14.88
$β$	0.4885	13.28
$γ$	-0.3044	-4.75
$δ$	0.8464	7.36

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Amphastar Pharmaceuticals Inc APARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:48.59% (+8.18%)

Date Range:

Parameter Estimates

News Impact Curve

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