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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 Wednesday, September 23rd, 2026

1 Day

20.20

decreased by 3.04

1 Week

22.35

decreased by 0.89

1 Month

25.69

increased by 2.45

Analysis last updated: Wednesday, September 23, 2026 at 06:01 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 Sep 18, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 8301 trading days (~32.9 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

High persistence: persistence 1.000, shock half-life ~8301 daysAsymmetry: Illiquidity rises 26% more after negative returns
ParamValuet-stat
mwindow51
αARCH0.2325
19.03***
βGARCH0.7367
69.04***
γleverage0.0615
4.19***
λ₁tau intercept2.5026
0.00
λ₂forecast adj.1.0000
51.48***
λ₃tau persistence0.0000
0.00

1.000

Persistence

8301d

Half-life
μ

ILLIQ-MFMEM Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

51
α

ARCH

Response to squared shocks

0.2325
19.03***
β

GARCH

Volatility persistence

0.7367
69.04***
γ

leverage

Additional response to negative shocks

0.0615
4.19***
λ₁

tau intercept

Baseline long-term coefficient

2.5026
0.00
λ₂

forecast adj.

Forecast performance sensitivity

1.0000
51.48***
λ₃

tau persistence

Long-term factor persistence

0.0000
0.00

Persistence:

1.000

Half-life:

8301 days