V-Lab
Daewon Sanup Co 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 Monday, September 21st, 2026
1 Day
266.00
decreased by 26.89
1 Week
270.90
decreased by 21.99
1 Month
233.43
decreased by 59.46
Analysis last updated: Sunday, September 20, 2026 at 12:52 AM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Oct 16, 2007 to Sep 18, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 138629 trading days (~550.1 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 ~138629 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.6884 | 0.06 |
| αARCH | 0.1410 | 0.02 |
| βGARCH | 0.8590 | 0.09 |
Spline Coefficients
K=5
| γ1 | -0.6420 | 0.00 |
| γ2 | 0.7624 | 0.00 |
| γ3 | -0.1504 | -0.01 |
| γ4 | 0.0761 | 0.02 |
| γ5 | -0.1375 | -0.02 |
1.000
Persistence138629d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.6884 | 0.06 |
α ARCH Response to squared shocks | 0.1410 | 0.02 |
β GARCH Volatility persistence | 0.8590 | 0.09 |
Spline Coefficients
K=5
| γ1 | -0.6420 | 0.00 |
| γ2 | 0.7624 | 0.00 |
| γ3 | -0.1504 | -0.01 |
| γ4 | 0.0761 | 0.02 |
| γ5 | -0.1375 | -0.02 |
Persistence:
1.000
Half-life:
138629 days
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