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Sierra Cables 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, August 31st, 2026

1 Day

153.05

increased by 27.00

1 Week

144.30

increased by 18.25

1 Month

565.83

increased by 439.78

Analysis last updated: Sunday, August 30, 2026 at 02:29 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Sierra Cables PLC ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jul 13, 2010 to Aug 28, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 86643 trading days (~343.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.2629
0.00
α

ARCH

Response to squared shocks

0.2171
0.00
β

GARCH

Volatility persistence

0.7829
0.00
γi Spline Coefficients
K=8
γ11.9493
0.00
γ2-4.6026
0.00
γ33.6812
0.01
γ4-0.9426
-0.01
γ5-2.4174
-0.01
γ66.1159
0.01
γ7-6.6143
-0.03
γ83.7475
0.00

Persistence:

1.000

Half-life:

86643 days