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Big Yellow Group PLC Asymmetric ILLIQ Liquidity Analysis

High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful

Illiquidity prediction for Tuesday, August 11th, 2026

1 Day

2,194.35

decreased by 39.32

1 Week

2,274.21

increased by 40.54

1 Month

2,487.54

increased by 253.87

Analysis last updated: Tuesday, August 11, 2026 at 09:30 PM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of Big Yellow Group PLC ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

May 5, 2000 to Aug 7, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 1386294 trading days (~5501.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Asymmetry: Illiquidity rises 54% more after negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.6926
1.20
α

ARCH

Response to squared shocks

0.0280
12.68***
β

GARCH

Volatility persistence

0.9645
797.09***
γ

leverage

Additional response to negative shocks

0.0150
3.92***

Persistence:

1.000

Half-life:

1386294 days