How volatility evolves over time

How illiquidity evolves over time

{name} Model Equation

How returns affect tomorrow's volatility

How returns affect tomorrow's illiquidity

Spline Coefficients

Value at Risk (VaR) estimates the maximum loss at a given confidence level. Expected Shortfall (ES) estimates the average loss beyond VaR.

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Param	Value	t-stat
ωconst	1.0722	11.72***
αARCH	0.0460	11.93***
βGARCH	0.9496	230.09***

γ₁	-0.0240	-7.62***
γ₂	0.0354	6.64***
γ₃	-0.0115	-2.08**

Parameter	Value	t-statistic
ω const Unconditional variance weight	1.0722	11.72***
α ARCH Response to squared shocks	0.0460	11.93***
β GARCH Volatility persistence	0.9496	230.09***

γ₁	-0.0240	-7.62***
γ₂	0.0354	6.64***
γ₃	-0.0115	-2.08**

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AT&T Inc Spline ILLIQ Liquidity Analysis

Date Range:

News Impact Curve

Illiquidity Forecast

Parameter Estimates

Other AT&T Inc Analyses