V-Lab
AT&T Inc Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, August 10th, 2026
1 Day
11.66
decreased by 0.33
1 Week
11.67
decreased by 0.32
1 Month
11.54
decreased by 0.45
Analysis last updated: Friday, August 7, 2026 at 11:00 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 2, 1990 to Aug 7, 2026Model Insight
With persistence 0.999, illiquidity shocks have a half-life of 1002 trading days (~4.0 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 78% more after negative returns
μ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0356 | 6.80*** |
α ARCH Response to squared shocks | 0.0310 | 25.46*** |
β GARCH Volatility persistence | 0.9563 | 1,131.67*** |
γ leverage Additional response to negative shocks | 0.0242 | 12.95*** |
Persistence:
0.999
Half-life:
1002 days
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