V-Lab
Uniform Industrial Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Friday, September 11th, 2026
1 Day
8,200.06
decreased by 107.29
1 Week
6,606.99
decreased by 1,700.36
1 Month
4,987.48
decreased by 3,319.87
Analysis last updated: Friday, September 11, 2026 at 09:17 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Feb 15, 2002 to Sep 4, 2026Model Insight
With persistence 0.999, illiquidity shocks have a half-life of 480 trading days (~1.9 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 0.999, shock half-life ~480 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1814 | 4.39*** |
| αARCH | 0.1950 | 14.99*** |
| βGARCH | 0.8036 | 58.35*** |
Spline Coefficients
K=6
| γ1 | -0.3933 | -4.10*** |
| γ2 | 0.6424 | 4.26*** |
| γ3 | -0.4778 | -4.16*** |
| γ4 | 0.4837 | 5.30*** |
| γ5 | -0.6899 | -9.04*** |
| γ6 | 1.1514 | 9.92*** |
0.999
Persistence480d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1814 | 4.39*** |
α ARCH Response to squared shocks | 0.1950 | 14.99*** |
β GARCH Volatility persistence | 0.8036 | 58.35*** |
Spline Coefficients
K=6
| γ1 | -0.3933 | -4.10*** |
| γ2 | 0.6424 | 4.26*** |
| γ3 | -0.4778 | -4.16*** |
| γ4 | 0.4837 | 5.30*** |
| γ5 | -0.6899 | -9.04*** |
| γ6 | 1.1514 | 9.92*** |
Persistence:
0.999
Half-life:
480 days
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