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	0.0077	21.21***
α ARCH Response to squared shocks	0.1290	33.03***
β GARCH Volatility persistence	0.8548	249.28***
γ leverage Additional response to negative shocks	0.0088	1.01

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