V-Lab
Wereldhave Belgium NV Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, September 21st, 2026
1 Day
52,914.70
decreased by 2,582.05
1 Week
64,341.58
increased by 8,844.83
1 Month
105,785.17
increased by 50,288.42
Analysis last updated: Saturday, September 19, 2026 at 06:16 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jun 18, 1998 to Sep 18, 2026Model Insight
This model fits a time-varying baseline (a spline), so illiquidity mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 19 trading days.
μ
ILLIQ-SMEM Model
Tap to view equation
Time-varying baseline: illiquidity reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.2354 | 7.00*** |
| αARCH | 0.1224 | 12.77*** |
| βGARCH | 0.8409 | 64.80*** |
Spline Coefficients
K=6
| γ1 | -0.1396 | -6.32*** |
| γ2 | 0.2056 | 5.83*** |
| γ3 | -0.0948 | -3.34*** |
| γ4 | 0.0155 | 0.57 |
| γ5 | 0.0786 | 2.90*** |
| γ6 | -0.1825 | -4.32*** |
0.963
Persistence19d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2354 | 7.00*** |
α ARCH Response to squared shocks | 0.1224 | 12.77*** |
β GARCH Volatility persistence | 0.8409 | 64.80*** |
Spline Coefficients
K=6
| γ1 | -0.1396 | -6.32*** |
| γ2 | 0.2056 | 5.83*** |
| γ3 | -0.0948 | -3.34*** |
| γ4 | 0.0155 | 0.57 |
| γ5 | 0.0786 | 2.90*** |
| γ6 | -0.1825 | -4.32*** |
Persistence:
0.963
Half-life:
19 days
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