V-Lab
Aitken Spence Plc Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, July 27th, 2026
1 Day
7,210.68
decreased by 979.59
1 Week
9,525.80
increased by 1,335.53
1 Month
7,606.72
decreased by 583.55
Analysis last updated: Sunday, July 26, 2026 at 05:49 AM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Aug 11, 1997 to Jul 24, 2026Model Insight
With persistence 0.993, illiquidity shocks have a half-life of 101 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.2977 | 1.32 |
α ARCH Response to squared shocks | 0.1687 | 5.89*** |
β GARCH Volatility persistence | 0.8245 | 31.28*** |
Spline Coefficients
K=10
| γ1 | 0.7284 | 1.69* |
| γ2 | -1.5323 | -2.75*** |
| γ3 | 1.8831 | 3.41*** |
| γ4 | -1.7434 | -1.94* |
| γ5 | 0.7678 | 0.83 |
| γ6 | -0.2385 | -0.38 |
| γ7 | 0.0005 | 0.00 |
| γ8 | 0.8011 | 2.36** |
| γ9 | -1.5915 | -5.87*** |
| γ10 | 1.6959 | 2.69*** |
Persistence:
0.993
Half-life:
101 days
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