Vitura SA Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, October 27th, 2026
1 Day
61,522,280.00
increased by 4,642,640.00
1 Week
57,805,992.00
increased by 926,352.00
1 Month
74,124,545.24
increased by 17,244,905.24
Analysis last updated: Tuesday, October 27, 2026 at 06:54 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Mar 28, 2006 to Oct 23, 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 9 trading days.
μ
ILLIQ-SMEM Model
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Time-varying baseline: illiquidity reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.2077 | 4.85*** |
| αARCH | 0.1137 | 6.57*** |
| βGARCH | 0.8148 | 26.50*** |
Spline Coefficients
K=10
| γ1 | 0.0177 | 0.09 |
| γ2 | -0.1743 | -0.59 |
| γ3 | 0.6095 | 2.70*** |
| γ4 | -1.1551 | -6.10*** |
| γ5 | 1.3883 | 6.68*** |
| γ6 | -1.1154 | -4.47*** |
| γ7 | 1.0664 | 2.72*** |
| γ8 | -1.1114 | -1.88* |
| γ9 | 0.7158 | 1.20 |
| γ10 | -0.9416 | -1.82* |
0.929
Persistence9d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.2077 | 4.85*** |
α ARCH Response to squared shocks | 0.1137 | 6.57*** |
β GARCH Volatility persistence | 0.8148 | 26.50*** |
Spline Coefficients
K=10
| γ1 | 0.0177 | 0.09 |
| γ2 | -0.1743 | -0.59 |
| γ3 | 0.6095 | 2.70*** |
| γ4 | -1.1551 | -6.10*** |
| γ5 | 1.3883 | 6.68*** |
| γ6 | -1.1154 | -4.47*** |
| γ7 | 1.0664 | 2.72*** |
| γ8 | -1.1114 | -1.88* |
| γ9 | 0.7158 | 1.20 |
| γ10 | -0.9416 | -1.82* |
Persistence:
0.929
Half-life:
9 days
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