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	param	t-stat
$ω$	0.0244	30.87
$α$	0.0668	0.44
$β$	0.9055	397.32
$γ$	1.0000	0.31
$δ$	1.3914	32.29

V-Lab

State Street SPDR Portfolio S&P 500 Value ETF APARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:12.41% (-0.59%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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