V-Lab
Polytronics Technology Corp Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Friday, September 11th, 2026
1 Day
237.32
increased by 13.82
1 Week
261.47
increased by 37.97
1 Month
630.31
increased by 406.81
Analysis last updated: Friday, September 11, 2026 at 09:41 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jul 3, 2003 to Sep 4, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 2432 trading days (~9.6 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 1.000, shock half-life ~2432 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.8586 | 2.48** |
| αARCH | 0.2104 | 4.35*** |
| βGARCH | 0.7893 | 16.71*** |
Spline Coefficients
K=10
| γ1 | -7.5432 | -1.47 |
| γ2 | 14.3017 | 1.41 |
| γ3 | -9.2461 | -1.34 |
| γ4 | 2.3714 | 1.30 |
| γ5 | 0.1588 | 0.34 |
| γ6 | -0.0525 | -0.18 |
| γ7 | -0.2219 | -0.79 |
| γ8 | 0.6558 | 2.05** |
| γ9 | -0.5885 | -1.30 |
| γ10 | -0.1385 | -0.26 |
1.000
Persistence2432d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8586 | 2.48** |
α ARCH Response to squared shocks | 0.2104 | 4.35*** |
β GARCH Volatility persistence | 0.7893 | 16.71*** |
Spline Coefficients
K=10
| γ1 | -7.5432 | -1.47 |
| γ2 | 14.3017 | 1.41 |
| γ3 | -9.2461 | -1.34 |
| γ4 | 2.3714 | 1.30 |
| γ5 | 0.1588 | 0.34 |
| γ6 | -0.0525 | -0.18 |
| γ7 | -0.2219 | -0.79 |
| γ8 | 0.6558 | 2.05** |
| γ9 | -0.5885 | -1.30 |
| γ10 | -0.1385 | -0.26 |
Persistence:
1.000
Half-life:
2432 days
Other Polytronics Technology Corp Analyses
Other Spline ILLIQ Analyses on International Equities