V-Lab
Axactor Asa Spline ILLIQ Liquidity Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Illiquidity prediction for Monday, September 21st, 2026
1 Day
4,053.33
decreased by 72.92
1 Week
4,670.81
increased by 544.56
1 Month
5,161.74
increased by 1,035.49
Analysis last updated: Sunday, September 20, 2026 at 12:57 AM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Nov 24, 1997 to Sep 18, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 99021 trading days (~392.9 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-SMEM Model
Tap to view equation
High persistence: persistence 1.000, shock half-life ~99021 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.3668 | 0.59 |
| αARCH | 0.1494 | 0.09 |
| βGARCH | 0.8506 | 0.54 |
Spline Coefficients
K=9
| γ1 | 0.3336 | 0.05 |
| γ2 | -1.0721 | -0.10 |
| γ3 | 0.0345 | 0.00 |
| γ4 | 1.9082 | 0.04 |
| γ5 | -0.0121 | 0.00 |
| γ6 | -2.8219 | -0.04 |
| γ7 | 2.2425 | 0.07 |
| γ8 | -0.8023 | -0.70 |
| γ9 | -0.1103 | -0.06 |
1.000
Persistence99021d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.3668 | 0.59 |
α ARCH Response to squared shocks | 0.1494 | 0.09 |
β GARCH Volatility persistence | 0.8506 | 0.54 |
Spline Coefficients
K=9
| γ1 | 0.3336 | 0.05 |
| γ2 | -1.0721 | -0.10 |
| γ3 | 0.0345 | 0.00 |
| γ4 | 1.9082 | 0.04 |
| γ5 | -0.0121 | 0.00 |
| γ6 | -2.8219 | -0.04 |
| γ7 | 2.2425 | 0.07 |
| γ8 | -0.8023 | -0.70 |
| γ9 | -0.1103 | -0.06 |
Persistence:
1.000
Half-life:
99021 days
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