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Aitken Spence Plc ILLIQ-MFMEM Liquidity Analysis

Illiquidity prediction for Wednesday, September 9th, 2026

1 Day

11,258.10

decreased by 1,347.95

1 Week

12,730.01

increased by 123.96

1 Month

16,075.87

increased by 3,469.82

Analysis last updated: Wednesday, September 9, 2026 at 08:24 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of Aitken Spence Plc ILLIQ-MFMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Aug 11, 1997 to Sep 4, 2026

Model Insight

With persistence 0.995, illiquidity shocks have a half-life of 138 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. This multi-frequency model splits illiquidity into a fast short-run component and a slow-moving long-run level that drifts over the sample rather than a constant baseline.

μ

ILLIQ-MFMEM Model

Tap to view equation

High persistence: persistence 0.995, shock half-life ~138 days
ParamValuet-stat
mwindow46
αARCH0.2040
3.42***
βGARCH0.8930
53.29***
γleverage-0.2040
-2.46**
λ₁tau intercept10.0000
0.40
λ₂forecast adj.0.0000
0.01
λ₃tau persistence0.9426
49.85***

0.995

Persistence

138d

Half-life
μ

ILLIQ-MFMEM Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

46
α

ARCH

Response to squared shocks

0.2040
3.42***
β

GARCH

Volatility persistence

0.8930
53.29***
γ

leverage

Additional response to negative shocks

-0.2040
-2.46**
λ₁

tau intercept

Baseline long-term coefficient

10.0000
0.40
λ₂

forecast adj.

Forecast performance sensitivity

0.0000
0.01
λ₃

tau persistence

Long-term factor persistence

0.9426
49.85***

Persistence:

0.995

Half-life:

138 days