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	param	t-stat
$ω$	0.0590	18.00
$α$	0.0173	11.97
$β$	0.9411	577.38
$γ$	0.0556	14.41

V-Lab

Martin Marietta Materials Inc GJR-GARCH Volatility Analysis

Volatility Prediction for Monday, February 23rd, 2026:34.97% (-0.70%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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