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	param	t-stat
$ω$	0.0086	1.26
$α$	0.0132	0.51
$β$	0.9868	352.44
$γ$	1.0000	0.33
$δ$	1.2804	15.84

V-Lab

GrafTech International Ltd. APARCH Volatility Analysis

Volatility Prediction for Tuesday, February 10th, 2026:133.53% (-1.33%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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