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Elementis 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, September 21st, 2026

1 Day

6,160.24

increased by 135.25

1 Week

5,671.41

decreased by 353.58

1 Month

5,320.62

decreased by 704.37

Analysis last updated: Sunday, September 20, 2026 at 03:37 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Elementis PLC ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 18, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 17328 trading days (~68.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

ILLIQ-SMEM Model

Tap to view equation

High persistence: persistence 1.000, shock half-life ~17328 days
ParamValuet-stat
ωconst1.0106
3.61***
αARCH0.0539
5.74***
βGARCH0.9461
100.54***
γi Spline Coefficients
K=1
γ1-0.0197
-3.96***

1.000

Persistence

17328d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0106
3.61***
α

ARCH

Response to squared shocks

0.0539
5.74***
β

GARCH

Volatility persistence

0.9461
100.54***
γi Spline Coefficients
K=1
γ1-0.0197
-3.96***

Persistence:

1.000

Half-life:

17328 days