V-Lab
National Tubes Ltd Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, September 29th, 2026
1 Day
2,723.65
increased by 28.55
1 Week
2,612.34
decreased by 82.76
1 Month
2,278.90
decreased by 416.20
Analysis last updated: Tuesday, September 29, 2026 at 05:58 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Apr 23, 2002 to Sep 24, 2026Model Insight
With persistence 0.996, illiquidity shocks have a half-life of 157 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-AMEM Model
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High persistence: persistence 0.996, shock half-life ~157 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 5.0000 | 0.12 |
| αARCH | 0.0000 | 0.00 |
| βGARCH | 0.9852 | 183.37*** |
| γleverage | 0.0207 | 0.87 |
0.996
Persistence157d
Half-lifeμ
ILLIQ-AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 0.12 |
α ARCH Response to squared shocks | 0.0000 | 0.00 |
β GARCH Volatility persistence | 0.9852 | 183.37*** |
γ leverage Additional response to negative shocks | 0.0207 | 0.87 |
Persistence:
0.996
Half-life:
157 days
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