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	param	t-stat
$ω$	0.0288	36.36
$α$	0.0858	32.08
$β$	0.9061	402.70
$γ$	0.8951	21.73
$δ$	1.0323	40.78

V-Lab

S&P 500 Index APARCH Volatility Analysis

Volatility Prediction for Monday, December 29th, 2025:10.75% (-0.51%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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