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Sierra Cables PLC Asymmetric 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, September 21st, 2026

1 Day

557.07

decreased by 21.80

1 Week

601.16

increased by 22.29

1 Month

744.18

increased by 165.31

Analysis last updated: Sunday, September 20, 2026 at 02:15 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Sierra Cables PLC ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jul 13, 2010 to Sep 18, 2026
Illiquid Asset

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 1386294 trading days (~5501.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

ILLIQ-AMEM Model

Tap to view equation

High persistence: persistence 1.000, shock half-life ~1386294 days
ParamValuet-stat
ωconst0.2614
0.01
αARCH0.0238
0.85
βGARCH0.9492
183.55***
γleverage0.0540
0.51

1.000

Persistence

1386294d

Half-life
μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.2614
0.01
α

ARCH

Response to squared shocks

0.0238
0.85
β

GARCH

Volatility persistence

0.9492
183.55***
γ

leverage

Additional response to negative shocks

0.0540
0.51

Persistence:

1.000

Half-life:

1386294 days