V-Lab
Ceylon Tobacco Co Ltd Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, September 29th, 2026
1 Day
2,357.03
increased by 949.61
1 Week
1,581.36
increased by 173.94
1 Month
1,519.24
increased by 111.82
Analysis last updated: Tuesday, September 29, 2026 at 08:27 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Nov 17, 2003 to Sep 25, 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 20 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 | 1.7640 | 3.69*** |
| αARCH | 0.0357 | 3.58*** |
| βGARCH | 0.9300 | 53.63*** |
Spline Coefficients
K=10
| γ1 | 0.0397 | 0.18 |
| γ2 | -0.2633 | -0.80 |
| γ3 | 0.3729 | 1.21 |
| γ4 | 0.1936 | 0.51 |
| γ5 | -1.1671 | -3.18*** |
| γ6 | 1.4521 | 4.71*** |
| γ7 | -0.8781 | -3.65*** |
| γ8 | 0.5353 | 2.62*** |
| γ9 | -0.7258 | -3.56*** |
| γ10 | 0.8165 | 2.67*** |
0.966
Persistence20d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.7640 | 3.69*** |
α ARCH Response to squared shocks | 0.0357 | 3.58*** |
β GARCH Volatility persistence | 0.9300 | 53.63*** |
Spline Coefficients
K=10
| γ1 | 0.0397 | 0.18 |
| γ2 | -0.2633 | -0.80 |
| γ3 | 0.3729 | 1.21 |
| γ4 | 0.1936 | 0.51 |
| γ5 | -1.1671 | -3.18*** |
| γ6 | 1.4521 | 4.71*** |
| γ7 | -0.8781 | -3.65*** |
| γ8 | 0.5353 | 2.62*** |
| γ9 | -0.7258 | -3.56*** |
| γ10 | 0.8165 | 2.67*** |
Persistence:
0.966
Half-life:
20 days
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