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	param	t-stat
$ω$	0.0279	31.90
$α$	0.0839	30.48
$β$	0.9066	378.52
$γ$	0.8309	19.11
$δ$	1.1003	42.36

V-Lab

S&P 100 Index APARCH Volatility Analysis

Volatility Prediction for Thursday, February 19th, 2026:15.76% (-0.94%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other S&P 100 Index Analyses