V-Lab
GPI for Urban Growth ILLIQ-MFMEM Liquidity Analysis
Illiquidity prediction for Sunday, September 20th, 2026
1 Day
1,450.13
1 Week
1,235.39
1 Month
1,148.55
Analysis last updated: Friday, September 18, 2026 at 06:55 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Sep 26, 2012 to Sep 17, 2026Model Insight
Illiquidity shocks decay with a half-life of 69 trading days, meaning a shock loses half its impact after approximately 69 days. 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
| Param | Value | t-stat |
|---|---|---|
| mwindow | 126 | |
| αARCH | 0.1588 | 4.56*** |
| βGARCH | 0.8159 | 37.81*** |
| γleverage | 0.0306 | 0.77 |
| λ₁tau intercept | 0.0000 | 0.00 |
| λ₂forecast adj. | 0.0211 | 0.61 |
| λ₃tau persistence | 0.9787 | 25.67*** |
0.990
Persistence69d
Half-lifeILLIQ-MFMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 126 | |
α ARCH Response to squared shocks | 0.1588 | 4.56*** |
β GARCH Volatility persistence | 0.8159 | 37.81*** |
γ leverage Additional response to negative shocks | 0.0306 | 0.77 |
λ₁ tau intercept Baseline long-term coefficient | 0.0000 | 0.00 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0211 | 0.61 |
λ₃ tau persistence Long-term factor persistence | 0.9787 | 25.67*** |
Persistence:
0.990
Half-life:
69 days
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