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	param	t-stat
$ω$	0.9099	6.13
$α$	0.0725	8.44
$β$	0.8997	78.32
$γ_{1}$	0.0709	4.56
$γ_{2}$	-0.1123	-4.76
$γ_{3}$	0.0747	4.03
$γ_{4}$	-0.0705	-3.47
$γ_{5}$	0.0642	2.61
$γ_{6}$	-0.0309	-0.85

V-Lab

Graham Holdings Co Spline-GARCH Volatility Analysis

Volatility Prediction for Monday, February 23rd, 2026:29.45% (-0.44%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Graham Holdings Co Analyses