V-Lab
LB Foster Co Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Wednesday, August 26th, 2026
1 Day
7,360.14
increased by 275.44
1 Week
6,523.19
decreased by 561.51
1 Month
5,537.85
decreased by 1,546.85
Analysis last updated: Tuesday, August 25, 2026 at 09:23 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 2, 1990 to Aug 21, 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 35 trading days.
μ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.4544 | 4.39*** |
α ARCH Response to squared shocks | 0.1356 | 9.59*** |
β GARCH Volatility persistence | 0.8448 | 55.55*** |
Spline Coefficients
K=7
| γ1 | -0.0118 | -0.31 |
| γ2 | 0.0892 | 1.51 |
| γ3 | -0.2905 | -5.78*** |
| γ4 | 0.4402 | 7.62*** |
| γ5 | -0.2878 | -6.40*** |
| γ6 | 0.0864 | 2.92*** |
| γ7 | -0.1199 | -2.97*** |
Persistence:
0.980
Half-life:
35 days
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