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Shenzhen Investment 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 Tuesday, September 8th, 2026

1 Day

5,896.27

increased by 71.07

1 Week

5,420.56

decreased by 404.64

1 Month

4,590.16

decreased by 1,235.04

Analysis last updated: Tuesday, September 8, 2026 at 08:20 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Shenzhen Investment Ltd ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Mar 7, 1997 to Sep 4, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 9242 trading days (~36.7 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 ~9242 days
ParamValuet-stat
ωconst0.8686
4.33***
αARCH0.1368
0.64
βGARCH0.8632
4.03***
γi Spline Coefficients
K=6
γ1-0.0858
-0.19
γ20.5357
0.91
γ3-1.3878
-7.11***
γ41.8410
8.15***
γ5-1.2585
-4.31***
γ60.4307
1.46

1.000

Persistence

9242d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.8686
4.33***
α

ARCH

Response to squared shocks

0.1368
0.64
β

GARCH

Volatility persistence

0.8632
4.03***
γi Spline Coefficients
K=6
γ1-0.0858
-0.19
γ20.5357
0.91
γ3-1.3878
-7.11***
γ41.8410
8.15***
γ5-1.2585
-4.31***
γ60.4307
1.46

Persistence:

1.000

Half-life:

9242 days