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	param	t-stat
$ω$	0.0263	20.32
$α$	0.0420	19.82
$β$	0.9357	555.31
$γ$	0.0242	5.93

V-Lab

AT&T Inc GJR-GARCH Volatility Analysis

Volatility Prediction for Monday, February 23rd, 2026:26.01% (-0.72%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other AT&T Inc Analyses