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

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

Liquidity prediction for Monday, July 20th, 2026

1 Day

380.83

increased by 53.67

1 Week

393.53

increased by 66.37

1 Month

380.45

increased by 53.29

Analysis last updated: Saturday, July 18, 2026 at 10:04 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 liquidity

Liquidity Forecast

How liquidity evolves over time

Parameter Estimates

Nov 16, 2007 to Jul 17, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 86643 trading days (~343.8 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

0.8699
2.03**
α

ARCH

Response to squared shocks

0.2620
0.12
β

GARCH

Volatility persistence

0.7380
0.35
γi Spline Coefficients
K=1
γ1-0.0143
-0.10

Persistence:

1.000

Half-life:

86643 days