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SSP Group Plc Asymmetric ILLIQ Liquidity Analysis

Illiquidity prediction for Tuesday, September 22nd, 2026

1 Day

5,362.50

increased by 266.14

1 Week

5,301.18

increased by 204.82

1 Month

4,575.83

decreased by 520.53

Analysis last updated: Tuesday, September 22, 2026 at 08:45 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of SSP Group Plc ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jul 9, 2014 to Sep 18, 2026

Model Insight

With persistence 0.999, illiquidity shocks have a half-life of 1179 trading days (~4.7 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 0.999, shock half-life ~1179 days
ParamValuet-stat
ωconst5.0000
0.72
αARCH0.0439
2.58***
βGARCH0.9414
134.82***
γleverage0.0281
0.97

0.999

Persistence

1179d

Half-life
μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.0000
0.72
α

ARCH

Response to squared shocks

0.0439
2.58***
β

GARCH

Volatility persistence

0.9414
134.82***
γ

leverage

Additional response to negative shocks

0.0281
0.97

Persistence:

0.999

Half-life:

1179 days