V-Lab
Jsl Sa Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, September 7th, 2026
1 Day
4,912.83
decreased by 118.55
1 Week
4,999.22
decreased by 32.16
1 Month
5,211.79
increased by 180.41
Analysis last updated: Sunday, September 6, 2026 at 02:45 AM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Apr 22, 2010 to Sep 4, 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 31 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 | 2.3214 | 2.44** |
| αARCH | 0.0561 | 4.25*** |
| βGARCH | 0.9218 | 43.55*** |
Spline Coefficients
K=7
| γ1 | -0.1519 | -0.62 |
| γ2 | 0.7305 | 2.27** |
| γ3 | -1.2464 | -6.55*** |
| γ4 | 0.9643 | 3.27*** |
| γ5 | -0.2239 | -0.54 |
| γ6 | -0.2162 | -0.58 |
| γ7 | 0.2416 | 0.89 |
0.978
Persistence31d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.3214 | 2.44** |
α ARCH Response to squared shocks | 0.0561 | 4.25*** |
β GARCH Volatility persistence | 0.9218 | 43.55*** |
Spline Coefficients
K=7
| γ1 | -0.1519 | -0.62 |
| γ2 | 0.7305 | 2.27** |
| γ3 | -1.2464 | -6.55*** |
| γ4 | 0.9643 | 3.27*** |
| γ5 | -0.2239 | -0.54 |
| γ6 | -0.2162 | -0.58 |
| γ7 | 0.2416 | 0.89 |
Persistence:
0.978
Half-life:
31 days
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