Central Costanera Sa Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, November 9th, 2026
1 Day
6,978.91
increased by 4,479.25
1 Week
3,651.16
increased by 1,151.50
1 Month
3,098.22
increased by 598.56
Analysis last updated: Saturday, November 7, 2026 at 06:47 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 24, 1995 to Nov 6, 2026Model Insight
With persistence 0.996, illiquidity shocks have a half-life of 188 trading days (~0.7 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 0.996, shock half-life ~188 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 3.0480 | 3.83*** |
| αARCH | 0.1781 | 11.46*** |
| βGARCH | 0.8182 | 57.31*** |
Spline Coefficients
K=9
| γ1 | 0.2529 | 1.75* |
| γ2 | -0.3759 | -1.74* |
| γ3 | 0.0569 | 0.42 |
| γ4 | 0.3637 | 3.29*** |
| γ5 | -1.4069 | -4.60*** |
| γ6 | 2.2146 | 3.37*** |
| γ7 | -0.6942 | -0.69 |
| γ8 | -1.6907 | -1.47 |
| γ9 | 2.6151 | 2.93*** |
0.996
Persistence188d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.0480 | 3.83*** |
α ARCH Response to squared shocks | 0.1781 | 11.46*** |
β GARCH Volatility persistence | 0.8182 | 57.31*** |
Spline Coefficients
K=9
| γ1 | 0.2529 | 1.75* |
| γ2 | -0.3759 | -1.74* |
| γ3 | 0.0569 | 0.42 |
| γ4 | 0.3637 | 3.29*** |
| γ5 | -1.4069 | -4.60*** |
| γ6 | 2.2146 | 3.37*** |
| γ7 | -0.6942 | -0.69 |
| γ8 | -1.6907 | -1.47 |
| γ9 | 2.6151 | 2.93*** |
Persistence:
0.996
Half-life:
188 days
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