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
mwindow	56
αARCH	0.0641	10.49***
βGARCH	0.8684	62.60***
γleverage	-0.0641	-1.62
λ₁tau intercept	0.0335	1.84*
λ₂forecast adj.	0.0779	3.38***
λ₃tau persistence	0.9193	38.94***

Parameter	Value	t-statistic
m window Rolling window length	56
α ARCH Response to squared shocks	0.0641	10.49***
β GARCH Volatility persistence	0.8684	62.60***
γ leverage Additional response to negative shocks	-0.0641	-1.62
λ₁ tau intercept Baseline long-term coefficient	0.0335	1.84*
λ₂ forecast adj. Forecast performance sensitivity	0.0779	3.38***
λ₃ tau persistence Long-term factor persistence	0.9193	38.94***

V-Lab

AT&T Inc ILLIQ-MFMEM Liquidity Analysis

Date Range:

News Impact Curve

Illiquidity Forecast

Parameter Estimates

Other AT&T Inc Analyses