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Vinacomin Halam Coal Jsc Spline ILLIQ Liquidity Analysis

Illiquidity prediction for Friday, September 11th, 2026

1 Day

14,178.10

decreased by 1,679.89

1 Week

15,175.13

decreased by 682.86

1 Month

11,199.54

decreased by 4,658.45

Analysis last updated: Friday, September 11, 2026 at 09:34 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Vinacomin Halam Coal Jsc ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

Mar 5, 2009 to Sep 4, 2026

Model Insight

With persistence 0.996, illiquidity shocks have a half-life of 159 trading days (~0.6 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 0.996, shock half-life ~159 days
ParamValuet-stat
ωconst1.2372
3.97***
αARCH0.1137
7.54***
βGARCH0.8820
49.20***
γi Spline Coefficients
K=8
γ11.1329
0.95
γ2-2.2251
-1.42
γ31.8712
2.14**
γ4-1.2182
-1.31
γ5-1.0829
-0.98
γ64.1664
3.53***
γ7-4.6357
-4.14***
γ85.0148
2.74***

0.996

Persistence

159d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.2372
3.97***
α

ARCH

Response to squared shocks

0.1137
7.54***
β

GARCH

Volatility persistence

0.8820
49.20***
γi Spline Coefficients
K=8
γ11.1329
0.95
γ2-2.2251
-1.42
γ31.8712
2.14**
γ4-1.2182
-1.31
γ5-1.0829
-0.98
γ64.1664
3.53***
γ7-4.6357
-4.14***
γ85.0148
2.74***

Persistence:

0.996

Half-life:

159 days