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Beijing Sifang Automation 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, August 13th, 2026

1 Day

28.12

decreased by 2.15

1 Week

33.22

increased by 2.95

1 Month

50.78

increased by 20.51

Analysis last updated: Thursday, August 13, 2026 at 06:42 PM UTC

Date Range:

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to

6M ·

1Y ·

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10Y ·

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graph of Beijing Sifang Automation Co Ltd ILLIQ-AMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jan 3, 2011 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 83% more after negative returns

μ

ILLIQ-AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.2928
15.84***
α

ARCH

Response to squared shocks

0.1547
37.28***
β

GARCH

Volatility persistence

0.7811
448.14***
γ

leverage

Additional response to negative shocks

0.1285
17.35***

Persistence:

1.000

Half-life:

1386294 days