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ACI Formulations PLC Spline ILLIQ Liquidity Analysis

Illiquidity prediction for Sunday, October 25th, 2026

1 Day

1,248.80

decreased by 237.81

1 Week

1,248.80

decreased by 237.81

1 Month

816.50

decreased by 670.11

Analysis last updated: Tuesday, October 20, 2026 at 05:58 PM UTC

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Date Range:

from

10/19/2024

to

10/19/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of ACI Formulations PLC ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Feb 10, 2009 to Oct 19, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 4175 trading days (~16.6 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 ~4175 days
ParamValuet-stat
ωconst1.0383
6.21***
αARCH0.3132
4.43***
βGARCH0.6866
9.69***
∑γi Spline Coefficients
K=6
γ1-0.8243
-1.73*
γ20.5397
0.90
γ31.0658
4.58***
γ4-2.0252
-8.61***
γ52.7171
4.84***
γ6-3.0519
-2.12**

1.000

Persistence

4175d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0383
6.21***
α

ARCH

Response to squared shocks

0.3132
4.43***
β

GARCH

Volatility persistence

0.6866
9.69***
∑γi Spline Coefficients
K=6
γ1-0.8243
-1.73*
γ20.5397
0.90
γ31.0658
4.58***
γ4-2.0252
-8.61***
γ52.7171
4.84***
γ6-3.0519
-2.12**

Persistence:

1.000

Half-life:

4175 days