V-Lab
Arch Meter Corporation ILLIQ-MFMEM Liquidity Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Illiquidity prediction for Thursday, October 1st, 2026
1 Day
4,216.46
1 Week
3,586.90
1 Month
4,967.89
Analysis last updated: Thursday, October 1, 2026 at 10:02 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Nov 4, 2022 to Sep 24, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 7453 trading days (~29.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. 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.
Asymmetry: Illiquidity rises 75% more after negative returns
ILLIQ-MFMEM Model
Tap to view equation
| Param | Value | t-stat |
|---|---|---|
| mwindow | 21 | |
| αARCH | 0.2175 | 13.35*** |
| βGARCH | 0.7007 | 55.99*** |
| γleverage | 0.1634 | 8.26*** |
| λ₁tau intercept | 1.8598 | 0.02 |
| λ₂forecast adj. | 0.1658 | 3.21*** |
| λ₃tau persistence | 0.8342 | 16.12*** |
1.000
Persistence7453d
Half-lifeILLIQ-MFMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 21 | |
α ARCH Response to squared shocks | 0.2175 | 13.35*** |
β GARCH Volatility persistence | 0.7007 | 55.99*** |
γ leverage Additional response to negative shocks | 0.1634 | 8.26*** |
λ₁ tau intercept Baseline long-term coefficient | 1.8598 | 0.02 |
λ₂ forecast adj. Forecast performance sensitivity | 0.1658 | 3.21*** |
λ₃ tau persistence Long-term factor persistence | 0.8342 | 16.12*** |
Persistence:
1.000
Half-life:
7453 days
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