V-Lab
SPIC Green Energy Co 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 Friday, September 18th, 2026
1 Day
69.14
increased by 12.67
1 Week
54.02
decreased by 2.45
1 Month
62.97
increased by 6.50
Analysis last updated: Friday, September 18, 2026 at 06:34 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Sep 26, 2002 to Sep 14, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 8060 trading days (~32.0 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 ~8060 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.0703 | 4.35*** |
| αARCH | 0.2697 | 2.90*** |
| βGARCH | 0.7302 | 7.83*** |
Spline Coefficients
K=10
| γ1 | -0.6436 | -1.25 |
| γ2 | 3.1523 | 4.03*** |
| γ3 | -6.6833 | -4.20*** |
| γ4 | 7.6915 | 2.62*** |
| γ5 | -5.0205 | -2.02** |
| γ6 | 2.0016 | 2.39** |
| γ7 | -0.8115 | -2.92*** |
| γ8 | 0.2689 | 0.69 |
| γ9 | 0.3098 | 0.60 |
| γ10 | -0.5213 | -0.91 |
1.000
Persistence8060d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0703 | 4.35*** |
α ARCH Response to squared shocks | 0.2697 | 2.90*** |
β GARCH Volatility persistence | 0.7302 | 7.83*** |
Spline Coefficients
K=10
| γ1 | -0.6436 | -1.25 |
| γ2 | 3.1523 | 4.03*** |
| γ3 | -6.6833 | -4.20*** |
| γ4 | 7.6915 | 2.62*** |
| γ5 | -5.0205 | -2.02** |
| γ6 | 2.0016 | 2.39** |
| γ7 | -0.8115 | -2.92*** |
| γ8 | 0.2689 | 0.69 |
| γ9 | 0.3098 | 0.60 |
| γ10 | -0.5213 | -0.91 |
Persistence:
1.000
Half-life:
8060 days
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