V-Lab
Rhetan Tmt Ltd 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 Tuesday, September 15th, 2026
1 Day
20,037.26
increased by 7,378.14
1 Week
9,129.88
decreased by 3,529.24
1 Month
2,365.90
decreased by 10,293.22
Analysis last updated: Wednesday, September 16, 2026 at 08:29 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Sep 5, 2022 to Sep 11, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 77016 trading days (~305.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-SMEM Model
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High persistence: persistence 1.000, shock half-life ~77016 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.0422 | 0.05 |
| αARCH | 0.3944 | 0.00 |
| βGARCH | 0.6056 | 0.01 |
Spline Coefficients
K=5
| γ1 | -14.3337 | 0.00 |
| γ2 | 9.7969 | 0.00 |
| γ3 | 13.2709 | 0.01 |
| γ4 | -24.0941 | -0.11 |
| γ5 | 48.2614 | 0.06 |
1.000
Persistence77016d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0422 | 0.05 |
α ARCH Response to squared shocks | 0.3944 | 0.00 |
β GARCH Volatility persistence | 0.6056 | 0.01 |
Spline Coefficients
K=5
| γ1 | -14.3337 | 0.00 |
| γ2 | 9.7969 | 0.00 |
| γ3 | 13.2709 | 0.01 |
| γ4 | -24.0941 | -0.11 |
| γ5 | 48.2614 | 0.06 |
Persistence:
1.000
Half-life:
77016 days
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