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	param	t-stat
$ω$	-0.0097	-1.92
$α$	0.1105	23.50
$β$	0.8594	178.23
$γ$	0.6808	14.90

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State Street SPDR S&P 500 ETF Trust AGARCH Volatility Analysis

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News Impact Curve

Volatility Forecast

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