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	param	t-stat
$ω$	1.8316	8.82
$α$	0.0969	2.81
$β$	0.4802	3.77
$γ_{1}$	0.5138	4.18
$γ_{2}$	-0.6870	-3.20

V-Lab

Portillo'S Inc Spline-GARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:52.99% (-4.72%)

Date Range:

Parameter Estimates

News Impact Curve

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Other Portillo'S Inc Analyses