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	param	t-stat
$ω$	1.7267	6.73
$α$	0.1205	8.15
$β$	0.8618	66.50
$γ_{1}$	0.0009	5.01

V-Lab

Hong Kong & China Gas Co Ltd Zero Slope Spline-GARCH Volatility Analysis

Volatility Prediction for Friday, February 20th, 2026:19.26% (+0.94%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Hong Kong & China Gas Co Ltd Analyses