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	param	t-stat
$ω$	0.2565	10.10
$α$	0.0683	13.03
$β$	0.8566	116.42
$γ$	0.0399	3.83

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Idemitsu Kosan Co Ltd GJR-GARCH Volatility Analysis

Volatility Prediction for Monday, February 16th, 2026:33.72% (+1.90%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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