V-Lab
Guangzhou Development Group Inc Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Thursday, September 10th, 2026
1 Day
85.54
decreased by 8.25
1 Week
83.39
decreased by 10.40
1 Month
66.53
decreased by 27.26
Analysis last updated: Thursday, September 10, 2026 at 06:18 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jul 18, 1997 to Sep 4, 2026Model Insight
With persistence 0.999, illiquidity shocks have a half-life of 686 trading days (~2.7 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 0.999, shock half-life ~686 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.6161 | 4.27*** |
| αARCH | 0.2357 | 19.97*** |
| βGARCH | 0.7633 | 64.64*** |
Spline Coefficients
K=10
| γ1 | 0.1774 | 0.86 |
| γ2 | -0.7337 | -2.35** |
| γ3 | 2.1143 | 8.68*** |
| γ4 | -2.8713 | -8.66*** |
| γ5 | 1.8335 | 4.40*** |
| γ6 | -2.2445 | -5.30*** |
| γ7 | 4.3077 | 9.42*** |
| γ8 | -3.8691 | -10.55*** |
| γ9 | 1.4975 | 6.24*** |
| γ10 | -0.3323 | -1.17 |
0.999
Persistence686d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.6161 | 4.27*** |
α ARCH Response to squared shocks | 0.2357 | 19.97*** |
β GARCH Volatility persistence | 0.7633 | 64.64*** |
Spline Coefficients
K=10
| γ1 | 0.1774 | 0.86 |
| γ2 | -0.7337 | -2.35** |
| γ3 | 2.1143 | 8.68*** |
| γ4 | -2.8713 | -8.66*** |
| γ5 | 1.8335 | 4.40*** |
| γ6 | -2.2445 | -5.30*** |
| γ7 | 4.3077 | 9.42*** |
| γ8 | -3.8691 | -10.55*** |
| γ9 | 1.4975 | 6.24*** |
| γ10 | -0.3323 | -1.17 |
Persistence:
0.999
Half-life:
686 days
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