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Shanghai Electric Power Co Ltd 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 Thursday, October 29th, 2026

1 Day

65.69

decreased by 13.09

1 Week

66.31

decreased by 12.47

1 Month

66.30

decreased by 12.48

Analysis last updated: Thursday, October 29, 2026 at 08:53 PM UTC

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Date Range:

from

10/28/2024

to

10/28/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Shanghai Electric Power Co Ltd ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Oct 29, 2003 to Oct 23, 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 138% more after negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

High persistence: persistence 1.000, shock half-life ~1386294 daysAsymmetry: Illiquidity rises 138% more after negative returns
ParamValuet-stat
ωconst0.6659
3.35***
αARCH0.1151
4.83***
βGARCH0.8053
95.51***
γleverage0.1592
3.70***

1.000

Persistence

1386294d

Half-life
μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.6659
3.35***
α

ARCH

Response to squared shocks

0.1151
4.83***
β

GARCH

Volatility persistence

0.8053
95.51***
γ

leverage

Additional response to negative shocks

0.1592
3.70***

Persistence:

1.000

Half-life:

1386294 days