Nikkei Stock Average Volatility Index

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	param	t-stat
$ω$	57.1850	7.63
$α$	0.1116	133.85
$β$	0.9985	5,227.60
$ν$	2.8908	201.14

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Sigma Koki Co Ltd GAS-GARCH Student T Volatility Analysis

Volatility Prediction for Monday, February 16th, 2026:48.32% (+6.90%)

Date Range:

Parameter Estimates

Other Sigma Koki Co Ltd Analyses