V-Lab
Henderson Smaller Companies Investment Trust PLC/The Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Friday, September 11th, 2026
1 Day
12,465.41
increased by 1,801.14
1 Week
11,847.09
increased by 1,182.82
1 Month
13,696.88
increased by 3,032.61
Analysis last updated: Friday, September 11, 2026 at 09:35 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
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 29 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 | 0.9967 | 2.23** |
| αARCH | 0.1453 | 4.18*** |
| βGARCH | 0.8311 | 30.93*** |
Spline Coefficients
K=5
| γ1 | -0.3677 | -6.43*** |
| γ2 | 0.4807 | 5.35*** |
| γ3 | -0.1013 | -1.61 |
| γ4 | 0.0012 | 0.02 |
| γ5 | -0.0421 | -0.53 |
0.976
Persistence29d
Half-lifeμ
ILLIQ-SMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.9967 | 2.23** |
α ARCH Response to squared shocks | 0.1453 | 4.18*** |
β GARCH Volatility persistence | 0.8311 | 30.93*** |
Spline Coefficients
K=5
| γ1 | -0.3677 | -6.43*** |
| γ2 | 0.4807 | 5.35*** |
| γ3 | -0.1013 | -1.61 |
| γ4 | 0.0012 | 0.02 |
| γ5 | -0.0421 | -0.53 |
Persistence:
0.976
Half-life:
29 days
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