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	param	t-stat
$ω$	-0.0186	-6.40
$α$	0.0814	40.17
$β$	0.8915	360.65
$γ$	0.8904	38.20

V-Lab

State Street SPDR Portfolio S&P 400 Mid Cap ETF AGARCH Volatility Analysis

Volatility Prediction for Wednesday, February 11th, 2026:15.33% (-0.39%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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