V-Lab
Grimoldi SA Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Thursday, September 3rd, 2026
1 Day
13,401.26
decreased by 1,543.88
1 Week
15,599.95
increased by 654.81
1 Month
11,677.76
decreased by 3,267.38
Analysis last updated: Thursday, September 3, 2026 at 05:50 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Dec 11, 1995 to Aug 28, 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 17 trading days.
μ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.4092 | 3.09*** |
α ARCH Response to squared shocks | 0.1175 | 3.99*** |
β GARCH Volatility persistence | 0.8425 | 19.14*** |
Spline Coefficients
K=8
| γ1 | 0.0069 | 0.05 |
| γ2 | -0.1586 | -0.69 |
| γ3 | 0.3312 | 0.97 |
| γ4 | -0.6282 | -2.17** |
| γ5 | 1.5640 | 7.61*** |
| γ6 | -2.3811 | -8.04*** |
| γ7 | 1.5282 | 3.72*** |
| γ8 | -0.0902 | -0.16 |
Persistence:
0.960
Half-life:
17 days
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