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	param	t-stat
$ω$	1.3643	5.56
$α$	0.0861	40.80
$β$	0.9908	555.70
$ν$	7.0339	7.67

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S&P 500 Index GAS-GARCH Student T Volatility Analysis

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News Impact Curve

Volatility Forecast

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Other S&P 500 Index Analyses