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	param	t-stat
$ω$	-0.0070	-5.01
$α$	0.0924	45.85
$β$	0.8847	400.13
$γ$	0.6294	40.26

V-Lab

S&P 500 Equal Weight Index (EWI) AGARCH Volatility Analysis

Volatility Prediction for Friday, February 20th, 2026:12.47% (+0.07%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other S&P 500 Equal Weight Index (EWI) Analyses