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	param	t-stat
$ω$	0.9008	6.09
$α$	0.0727	8.41
$β$	0.8992	77.87
$γ_{1}$	0.0693	4.45
$γ_{2}$	-0.1098	-4.65
$γ_{3}$	0.0734	3.99
$γ_{4}$	-0.0707	-3.68
$γ_{5}$	0.0669	3.43
$γ_{6}$	-0.0406	-2.77

V-Lab

Graham Holdings Co Zero Slope Spline-GARCH Volatility Analysis

Volatility Prediction for Monday, February 9th, 2026:28.19% (+0.87%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Graham Holdings Co Analyses