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	param	t-stat
$ω$	0.0367	21.16
$α$	0.0581	29.05
$β$	0.9381	476.91
$γ$	0.4452	15.10
$δ$	0.9869	24.64

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Martin Marietta Materials Inc APARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:30.92% (+0.13%)

Date Range:

Parameter Estimates

News Impact Curve

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