Weichai Heavy Machinery Co Ltd Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Thursday, November 5th, 2026
1 Day
172.38
increased by 16.36
1 Week
187.74
increased by 31.72
1 Month
131.87
decreased by 24.15
Analysis last updated: Thursday, November 5, 2026 at 07:19 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Apr 2, 1998 to Nov 2, 2026Model Insight
With persistence 0.997, illiquidity shocks have a half-life of 207 trading days (~0.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-SMEM Model
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High persistence: persistence 0.997, shock half-life ~207 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.3945 | 1.85* |
| αARCH | 0.3058 | 10.77*** |
| βGARCH | 0.6909 | 29.35*** |
Spline Coefficients
K=5
| γ1 | 0.0556 | 0.91 |
| γ2 | -0.2041 | -2.03** |
| γ3 | 0.3412 | 4.04*** |
| γ4 | -0.3184 | -4.75*** |
| γ5 | 0.1206 | 2.09** |
0.997
Persistence207d
Half-lifeμ
ILLIQ-SMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.3945 | 1.85* |
α ARCH Response to squared shocks | 0.3058 | 10.77*** |
β GARCH Volatility persistence | 0.6909 | 29.35*** |
Spline Coefficients
K=5
| γ1 | 0.0556 | 0.91 |
| γ2 | -0.2041 | -2.03** |
| γ3 | 0.3412 | 4.04*** |
| γ4 | -0.3184 | -4.75*** |
| γ5 | 0.1206 | 2.09** |
Persistence:
0.997
Half-life:
207 days
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