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V-Lab

Beijing Sifang Automation Co Ltd Spline ILLIQ 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

20.90

decreased by 2.60

1 Week

22.97

decreased by 0.53

1 Month

25.91

increased by 2.41

Analysis last updated: Wednesday, September 23, 2026 at 06:01 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Beijing Sifang Automation Co Ltd ILLIQ-SMEM

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 20386 trading days (~80.9 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

ILLIQ-SMEM Model

Tap to view equation

High persistence: persistence 1.000, shock half-life ~20386 days
ParamValuet-stat
ωconst0.8950
2.89***
αARCH0.2540
13.71***
βGARCH0.7459
40.22***
γi Spline Coefficients
K=1
γ1-0.0201
-2.06**

1.000

Persistence

20386d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.8950
2.89***
α

ARCH

Response to squared shocks

0.2540
13.71***
β

GARCH

Volatility persistence

0.7459
40.22***
γi Spline Coefficients
K=1
γ1-0.0201
-2.06**

Persistence:

1.000

Half-life:

20386 days