V-Lab
Wei Chih Steel Ind 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 Wednesday, September 9th, 2026
1 Day
5,290.29
decreased by 419.08
1 Week
6,024.31
increased by 314.94
1 Month
6,454.18
increased by 744.81
Analysis last updated: Wednesday, September 9, 2026 at 08:35 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 3, 1997 to Sep 4, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 99021 trading days (~392.9 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 ~99021 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.9306 | 0.48 |
| αARCH | 0.1821 | 0.01 |
| βGARCH | 0.8179 | 0.03 |
Spline Coefficients
K=6
| γ1 | -0.3428 | -0.03 |
| γ2 | 0.3703 | 0.02 |
| γ3 | -0.3655 | 0.00 |
| γ4 | 1.1888 | 0.00 |
| γ5 | -1.7143 | -0.01 |
| γ6 | 1.7299 | 0.01 |
1.000
Persistence99021d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.9306 | 0.48 |
α ARCH Response to squared shocks | 0.1821 | 0.01 |
β GARCH Volatility persistence | 0.8179 | 0.03 |
Spline Coefficients
K=6
| γ1 | -0.3428 | -0.03 |
| γ2 | 0.3703 | 0.02 |
| γ3 | -0.3655 | 0.00 |
| γ4 | 1.1888 | 0.00 |
| γ5 | -1.7143 | -0.01 |
| γ6 | 1.7299 | 0.01 |
Persistence:
1.000
Half-life:
99021 days
Other Wei Chih Steel Ind Analyses
Other Spline ILLIQ Analyses on International Equities