CBOE Volatility Index

How illiquidity evolves over time

{name} Model Equation

How returns affect tomorrow's illiquidity

Spline Coefficients

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Parameter	Value	t-statistic
ω const Unconditional variance weight	0.9893	4.44***
α ARCH Response to squared shocks	0.1246	2.81***
β GARCH Volatility persistence	0.7357	24.05***
γ leverage Additional response to negative shocks	-0.0926	-1.51

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