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	param	t-stat
$ω$	0.0180	21.52
$α$	0.0657	24.13
$β$	0.9341	627.74
$γ$	-0.0185	-4.23

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S&P GSCI Grains Spot Index GJR-GARCH Volatility Analysis

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News Impact Curve

Volatility Forecast

Parameter Estimates

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