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Guangzhou Baiyunshan Pharmaceutical Holdings 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 Friday, August 28th, 2026

1 Day

56.85

decreased by 12.68

1 Week

73.72

increased by 4.19

1 Month

48.52

decreased by 21.01

Analysis last updated: Friday, August 28, 2026 at 06:04 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Guangzhou Baiyunshan Pharmaceutical Holdings Co Ltd ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Feb 23, 2001 to Aug 21, 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 246% more after negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0220
9.22***
α

ARCH

Response to squared shocks

0.0963
7.99***
β

GARCH

Volatility persistence

0.7853
134.44***
γ

leverage

Additional response to negative shocks

0.2368
4.16***

Persistence:

1.000

Half-life:

1386294 days