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Central Finance Co (Lanka) Spline ILLIQ Liquidity Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Illiquidity prediction for Wednesday, October 7th, 2026
1 Day
8,441.75
decreased by 813.04
1 Week
8,807.72
decreased by 447.07
1 Month
10,871.12
increased by 1,616.33
Analysis last updated: Wednesday, October 7, 2026 at 08:35 PM UTC
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How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Nov 17, 2003 to Oct 2, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 173286 trading days (~687.6 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 1.000, shock half-life ~173286 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1545 | |
| αARCH | 0.1459 | |
| βGARCH | 0.8541 |
Spline Coefficients
K=10
| γ1 | -2.0639 | |
| γ2 | 5.1122 | |
| γ3 | -1.5498 | |
| γ4 | -4.7406 | |
| γ5 | 3.8871 | |
| γ6 | -0.2821 | |
| γ7 | -1.1100 | |
| γ8 | 1.4583 | |
| γ9 | -1.6145 | |
| γ10 | 2.5433 |
1.000
Persistence173286d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1545 | |
α ARCH Response to squared shocks | 0.1459 | |
β GARCH Volatility persistence | 0.8541 |
Spline Coefficients
K=10
| γ1 | -2.0639 | |
| γ2 | 5.1122 | |
| γ3 | -1.5498 | |
| γ4 | -4.7406 | |
| γ5 | 3.8871 | |
| γ6 | -0.2821 | |
| γ7 | -1.1100 | |
| γ8 | 1.4583 | |
| γ9 | -1.6145 | |
| γ10 | 2.5433 |
Persistence:
1.000
Half-life:
173286 days
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