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	param	t-stat
$ω$	5.3136	8.20
$α$	0.0905	66.96
$β$	0.9978	3,108.41
$ν$	6.8553	16.06

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State Street SPDR Portfolio S&P 500 Growth ETF GAS-GARCH Student T Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:20.23% (-1.15%)

Date Range:

Parameter Estimates

Other State Street SPDR Portfolio S&P 500 Growth ETF Analyses