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	param	t-stat
$ω$	1.0000	7.53
$α$	0.0807	17.18
$β$	0.8348	81.54
$γ$	-1.0000	-35.73
$δ$	0.8734	17.28

V-Lab

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

Volatility Prediction for Monday, February 9th, 2026:229.69% (-21.61%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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