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	param	t-stat
$ω$	3.0803	5.67
$α$	0.1006	9.21
$β$	0.8716	68.84
$γ_{1}$	0.0932	6.82
$γ_{2}$	-0.1256	-6.23
$γ_{3}$	0.0605	3.79
$γ_{4}$	-0.0414	-3.59

V-Lab

State Street SPDR Portfolio S&P 500 Growth ETF Zero Slope Spline-GARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:19.89% (-0.93%)

Date Range:

Parameter Estimates

News Impact Curve

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