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	param	t-stat
$ω$	0.8594	4.57
$α$	0.1386	5.37
$β$	0.7219	15.96
$γ_{1}$	-0.7587	-4.34
$γ_{2}$	1.2338	4.66
$γ_{3}$	-0.7862	-3.55
$γ_{4}$	0.5232	2.32
$γ_{5}$	-0.4217	-2.01
$γ_{6}$	0.4819	2.83
$γ_{7}$	-0.5046	-3.70
$γ_{8}$	0.3004	1.98
$γ_{9}$	0.0607	0.27

V-Lab

AECOM Spline-GARCH Volatility Analysis

Volatility Prediction for Thursday, February 12th, 2026:31.26% (+3.41%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other AECOM Analyses