V-Lab
JPMorgan UK Small CAP Growth & Income PLC Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Friday, September 11th, 2026
1 Day
22,307.24
decreased by 3,182.72
1 Week
19,483.84
decreased by 6,006.12
1 Month
13,104.39
decreased by 12,385.57
Analysis last updated: Friday, September 11, 2026 at 09:31 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 2, 2007 to Sep 4, 2026Model Insight
With persistence 0.999, illiquidity shocks have a half-life of 661 trading days (~2.6 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 0.999, shock half-life ~661 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1821 | 3.74*** |
| αARCH | 0.1983 | 6.92*** |
| βGARCH | 0.8007 | 28.10*** |
Spline Coefficients
K=8
| γ1 | -0.9036 | -1.91* |
| γ2 | 1.4157 | 1.82* |
| γ3 | -3.8277 | -2.76*** |
| γ4 | 8.9295 | 3.38*** |
| γ5 | -8.8232 | -3.70*** |
| γ6 | 3.9717 | 4.36*** |
| γ7 | -1.3063 | -4.40*** |
| γ8 | 1.1731 | 3.47*** |
0.999
Persistence661d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1821 | 3.74*** |
α ARCH Response to squared shocks | 0.1983 | 6.92*** |
β GARCH Volatility persistence | 0.8007 | 28.10*** |
Spline Coefficients
K=8
| γ1 | -0.9036 | -1.91* |
| γ2 | 1.4157 | 1.82* |
| γ3 | -3.8277 | -2.76*** |
| γ4 | 8.9295 | 3.38*** |
| γ5 | -8.8232 | -3.70*** |
| γ6 | 3.9717 | 4.36*** |
| γ7 | -1.3063 | -4.40*** |
| γ8 | 1.1731 | 3.47*** |
Persistence:
0.999
Half-life:
661 days
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