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Montanaro UK Smaller Companies Investment Trust PLC 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 Monday, October 26th, 2026

1 Day

68,271.37

decreased by 3,498.39

1 Week

73,752.79

increased by 1,983.03

1 Month

85,346.50

increased by 13,576.74

Analysis last updated: Sunday, October 25, 2026 at 08:39 AM UTC

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Date Range:

from

10/23/2024

to

10/23/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Montanaro UK Smaller Companies Investment Trust PLC ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jan 2, 2007 to Oct 23, 2026

Model 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

Tap to view equation

High persistence: persistence 1.000, shock half-life ~173286 days
ParamValuet-stat
ωconst0.9953
αARCH0.1105
βGARCH0.8895
∑γi Spline Coefficients
K=10
γ10.6640
γ2-0.5388
γ3-3.3026
γ48.1748
γ5-9.3225
γ66.9331
γ7-3.7437
γ81.4894
γ9-0.5074
γ100.6924

1.000

Persistence

173286d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.9953
α

ARCH

Response to squared shocks

0.1105
β

GARCH

Volatility persistence

0.8895
∑γi Spline Coefficients
K=10
γ10.6640
γ2-0.5388
γ3-3.3026
γ48.1748
γ5-9.3225
γ66.9331
γ7-3.7437
γ81.4894
γ9-0.5074
γ100.6924

Persistence:

1.000

Half-life:

173286 days