V-Lab
Wal-Mart Stores Inc ILLIQ-MFMEM Liquidity Analysis
Illiquidity prediction for Tuesday, September 22nd, 2026
1 Day
4.14
1 Week
4.33
1 Month
4.37
Analysis last updated: Monday, September 21, 2026 at 09:35 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 2, 1990 to Sep 18, 2026Model Insight
This asset shows asymmetric liquidity dynamics: illiquidity rises 152% more after negative returns than after positive returns of equal magnitude. This multi-frequency model splits illiquidity into a fast short-run component and a slow-moving long-run level that drifts over the sample rather than a constant baseline.
ILLIQ-MFMEM Model
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| Param | Value | t-stat |
|---|---|---|
| mwindow | 21 | |
| αARCH | 0.0514 | 9.06*** |
| βGARCH | 0.8698 | 58.65*** |
| γleverage | 0.0783 | 3.93*** |
| λ₁tau intercept | 0.0137 | 1.43 |
| λ₂forecast adj. | 0.0258 | 6.90*** |
| λ₃tau persistence | 0.9732 | 258.64*** |
0.960
Persistence17d
Half-lifeILLIQ-MFMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 21 | |
α ARCH Response to squared shocks | 0.0514 | 9.06*** |
β GARCH Volatility persistence | 0.8698 | 58.65*** |
γ leverage Additional response to negative shocks | 0.0783 | 3.93*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0137 | 1.43 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0258 | 6.90*** |
λ₃ tau persistence Long-term factor persistence | 0.9732 | 258.64*** |
Persistence:
0.960
Half-life:
17 days
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