V-Lab
All About Inc Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, September 28th, 2026
1 Day
2,315.92
decreased by 325.35
1 Week
2,478.60
decreased by 162.67
1 Month
2,860.91
increased by 219.64
Analysis last updated: Saturday, September 26, 2026 at 08:54 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Sep 13, 2005 to Sep 25, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 4780 trading days (~19.0 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-SMEM Model
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High persistence: persistence 1.000, shock half-life ~4780 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.9887 | 5.31*** |
| αARCH | 0.1777 | 10.48*** |
| βGARCH | 0.8222 | 48.45*** |
Spline Coefficients
K=3
| γ1 | -0.2525 | -13.91*** |
| γ2 | 0.3651 | 12.78*** |
| γ3 | -0.1342 | -3.90*** |
1.000
Persistence4780d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.9887 | 5.31*** |
α ARCH Response to squared shocks | 0.1777 | 10.48*** |
β GARCH Volatility persistence | 0.8222 | 48.45*** |
Spline Coefficients
K=3
| γ1 | -0.2525 | -13.91*** |
| γ2 | 0.3651 | 12.78*** |
| γ3 | -0.1342 | -3.90*** |
Persistence:
1.000
Half-life:
4780 days
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