V-Lab
Mivtach Shamir Hds 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 Wednesday, July 29th, 2026
1 Day
6,491.83
1 Week
3,548.76
1 Month
3,610.47
Analysis last updated: Wednesday, July 29, 2026 at 07:16 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
May 24, 2002 to Jul 24, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 13202 trading days (~52.4 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.
ILLIQ-MFMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 26 | |
α ARCH Response to squared shocks | 0.1473 | 1.11 |
β GARCH Volatility persistence | 0.7610 | 92.90*** |
γ leverage Additional response to negative shocks | 0.1833 | 0.72 |
λ₁ tau intercept Baseline long-term coefficient | 1.3185 | 0.00 |
λ₂ forecast adj. Forecast performance sensitivity | 0.1197 | 2.04** |
λ₃ tau persistence Long-term factor persistence | 0.8803 | 14.23*** |
Persistence:
1.000
Half-life:
13202 days
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