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Shanghai Hi-Tech Control System Co Ltd Spline ILLIQ Liquidity Analysis

Illiquidity prediction for Monday, August 24th, 2026

1 Day

329.90

decreased by 67.97

1 Week

275.85

decreased by 122.02

1 Month

267.54

decreased by 130.33

Analysis last updated: Saturday, August 22, 2026 at 07:24 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Shanghai Hi-Tech Control System Co Ltd ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Nov 16, 2007 to Aug 21, 2026

Model Insight

With persistence 0.992, illiquidity shocks have a half-life of 91 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.1125
5.29***
α

ARCH

Response to squared shocks

0.2622
21.73***
β

GARCH

Volatility persistence

0.7302
68.59***
γi Spline Coefficients
K=6
γ1-0.4359
-2.32**
γ20.2830
0.80
γ30.5912
2.05**
γ4-0.6747
-4.01***
γ50.3607
2.82***
γ6-0.1243
-0.60

Persistence:

0.992

Half-life:

91 days