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	param	t-stat
$ω$	1.3619	7.72
$α$	0.1022	10.19
$β$	0.8660	73.98
$γ_{1}$	0.0884	6.46
$γ_{2}$	-0.1398	-6.32
$γ_{3}$	0.0805	4.98
$γ_{4}$	-0.0522	-3.55
$γ_{5}$	0.0459	2.73
$γ_{6}$	-0.0327	-2.52

V-Lab

S&P 500 Index Zero Slope Spline-GARCH Volatility Analysis

Volatility Prediction for Monday, February 23rd, 2026:13.37% (-0.08%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other S&P 500 Index Analyses