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V-Lab

Beijing Sifang Automation Co Ltd ILLIQ-MFMEM Liquidity Analysis

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

Illiquidity prediction for Thursday, September 3rd, 2026

1 Day

29.76

increased by 5.60

1 Week

22.65

decreased by 1.51

1 Month

28.62

increased by 4.46

Analysis last updated: Thursday, September 3, 2026 at 06:00 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of Beijing Sifang Automation Co Ltd ILLIQ-MFMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Jan 3, 2011 to Aug 28, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 7788 trading days (~30.9 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. 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.

Asymmetry: Illiquidity rises 26% more after negative returns

μ

ILLIQ-MFMEM Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

51
α

ARCH

Response to squared shocks

0.2328
19.18***
β

GARCH

Volatility persistence

0.7365
69.84***
γ

leverage

Additional response to negative shocks

0.0612
4.17***
λ₁

tau intercept

Baseline long-term coefficient

0.2505
0.00
λ₂

forecast adj.

Forecast performance sensitivity

1.0000
50.92***
λ₃

tau persistence

Long-term factor persistence

0.0000
0.00

Persistence:

1.000

Half-life:

7788 days