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	param	t-stat
$ω$	0.4982	5.54
$α$	0.1531	9.32
$β$	0.7935	42.69
$γ_{1}$	-0.0438	-5.20
$γ_{2}$	0.0565	4.37
$γ_{3}$	-0.0216	-2.42
$γ_{4}$	0.0219	2.20

V-Lab

Kosei Securities Co Ltd Spline-GARCH Volatility Analysis

Volatility Prediction for Friday, February 13th, 2026:33.76% (+0.31%)

Date Range:

Parameter Estimates

News Impact Curve

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