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	param	t-stat
$ω$	0.0199	19.52
$α$	0.0655	30.50
$β$	0.9345	491.34
$γ$	0.0548	3.16
$δ$	1.6151	33.54

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Graham Holdings Co APARCH Volatility Analysis

Volatility Prediction for Wednesday, February 25th, 2026:27.75% (-1.02%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Graham Holdings Co Analyses