V-Lab
ICADE Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, September 21st, 2026
1 Day
4,639.52
increased by 300.41
1 Week
4,599.05
increased by 259.94
1 Month
5,298.48
increased by 959.37
Analysis last updated: Saturday, September 19, 2026 at 08:18 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jul 5, 1991 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 35 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 | 1.8226 | 4.36*** |
| αARCH | 0.1207 | 14.75*** |
| βGARCH | 0.8596 | 89.48*** |
Spline Coefficients
K=6
| γ1 | -0.4909 | -9.90*** |
| γ2 | 0.8629 | 11.61*** |
| γ3 | -0.4916 | -10.28*** |
| γ4 | 0.1990 | 4.79*** |
| γ5 | -0.0898 | -2.12** |
| γ6 | -0.0127 | -0.22 |
0.980
Persistence35d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.8226 | 4.36*** |
α ARCH Response to squared shocks | 0.1207 | 14.75*** |
β GARCH Volatility persistence | 0.8596 | 89.48*** |
Spline Coefficients
K=6
| γ1 | -0.4909 | -9.90*** |
| γ2 | 0.8629 | 11.61*** |
| γ3 | -0.4916 | -10.28*** |
| γ4 | 0.1990 | 4.79*** |
| γ5 | -0.0898 | -2.12** |
| γ6 | -0.0127 | -0.22 |
Persistence:
0.980
Half-life:
35 days
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