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Great Portland Estates PLC ILLIQ-MFMEM Liquidity Analysis

Illiquidity prediction for Monday, August 3rd, 2026

1 Day

4,522.07

increased by 174.57

1 Week

4,328.99

decreased by 18.51

1 Month

4,782.08

increased by 434.58

Analysis last updated: Sunday, August 2, 2026 at 10:20 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Great Portland Estates PLC ILLIQ-MFMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jan 11, 1991 to Jul 31, 2026

Model Insight

Illiquidity shocks decay with a half-life of 3 trading days, meaning a shock loses half its impact after approximately 3 days. This multi-frequency model splits illiquidity into a fast short-run component and a slow-moving long-run level that drifts over the sample rather than a constant baseline.

μ

ILLIQ-MFMEM Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

76
α

ARCH

Response to squared shocks

0.1016
0.50
β

GARCH

Volatility persistence

0.7152
11.19***
γ

leverage

Additional response to negative shocks

-0.1016
-0.23
λ₁

tau intercept

Baseline long-term coefficient

2.1931
0.79
λ₂

forecast adj.

Forecast performance sensitivity

0.0861
1.80*
λ₃

tau persistence

Long-term factor persistence

0.9139
4.55***

Persistence:

0.766

Half-life:

3 days