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	param	t-stat
$ω$	0.0199	19.51
$α$	0.0654	30.40
$β$	0.9346	490.87
$γ$	0.0557	3.20
$δ$	1.6139	33.49

V-Lab

Graham Holdings Co APARCH Volatility Analysis

Volatility Prediction for Monday, February 9th, 2026:25.51% (+1.20%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Graham Holdings Co Analyses