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Halcyon Technology PLC Spline ILLIQ Liquidity Analysis

Illiquidity prediction for Friday, September 18th, 2026

1 Day

9,435.15

increased by 3,074.96

1 Week

6,201.01

decreased by 159.18

1 Month

4,688.13

decreased by 1,672.06

Analysis last updated: Friday, September 18, 2026 at 09:11 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Halcyon Technology PLC ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Mar 30, 2009 to Sep 14, 2026

Model Insight

With persistence 0.999, illiquidity shocks have a half-life of 794 trading days (~3.1 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 0.999, shock half-life ~794 days
ParamValuet-stat
ωconst1.4036
3.89***
αARCH0.1656
16.18***
βGARCH0.8335
82.26***
γi Spline Coefficients
K=2
γ1-0.1416
-3.42***
γ20.3219
4.41***

0.999

Persistence

794d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.4036
3.89***
α

ARCH

Response to squared shocks

0.1656
16.18***
β

GARCH

Volatility persistence

0.8335
82.26***
γi Spline Coefficients
K=2
γ1-0.1416
-3.42***
γ20.3219
4.41***

Persistence:

0.999

Half-life:

794 days