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	param	t-stat
$ω$	1.0000	7.53
$α$	0.0800	17.16
$β$	0.8353	81.53
$γ$	-1.0000	-35.45
$δ$	0.8737	17.27

V-Lab

CBOE S&P 500 9-Day Volatility Index APARCH Volatility Analysis

Volatility Prediction for Monday, March 16th, 2026:227.69% (-21.04%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other CBOE S&P 500 9-Day Volatility Index Analyses