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	param	t-stat
$ω$	0.0592	17.99
$α$	0.0173	11.98
$β$	0.9410	575.16
$γ$	0.0558	14.38

V-Lab

Martin Marietta Materials Inc GJR-GARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:37.15% (-0.46%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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