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	param	t-stat
$ω$	0.0402	25.40
$α$	0.1066	19.83
$β$	0.8862	172.15
$γ$	0.9068	13.47
$δ$	0.9302	28.26

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S&P Total Market Index APARCH Volatility Analysis

Volatility Prediction for Monday, February 9th, 2026:16.23% (-1.00%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other S&P Total Market Index Analyses