V-Lab
Williamson Tea Kenya Ltd Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Friday, September 11th, 2026
1 Day
5,319.12
increased by 2,719.30
1 Week
2,911.73
increased by 311.91
1 Month
2,588.13
decreased by 11.69
Analysis last updated: Friday, September 11, 2026 at 08:35 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 25, 1991 to Sep 4, 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 8 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 | 0.9253 | 3.88*** |
| αARCH | 0.1186 | 6.94*** |
| βGARCH | 0.7933 | 23.48*** |
Spline Coefficients
K=5
| γ1 | -0.0662 | -0.90 |
| γ2 | 0.0411 | 0.38 |
| γ3 | 0.0544 | 0.84 |
| γ4 | 0.0159 | 0.28 |
| γ5 | -0.4395 | -5.92*** |
0.912
Persistence8d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.9253 | 3.88*** |
α ARCH Response to squared shocks | 0.1186 | 6.94*** |
β GARCH Volatility persistence | 0.7933 | 23.48*** |
Spline Coefficients
K=5
| γ1 | -0.0662 | -0.90 |
| γ2 | 0.0411 | 0.38 |
| γ3 | 0.0544 | 0.84 |
| γ4 | 0.0159 | 0.28 |
| γ5 | -0.4395 | -5.92*** |
Persistence:
0.912
Half-life:
8 days
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