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	param	t-stat
$ω$	0.0251	20.28
$α$	0.0408	19.60
$β$	0.9376	566.20
$γ$	0.0233	5.84

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AT&T Inc GJR-GARCH Volatility Analysis

Volatility Prediction for Friday, December 26th, 2025:17.69% (-0.20%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other AT&T Inc Analyses