V-Lab
Stakk Ltd 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 Tuesday, October 6th, 2026
1 Day
115,678.90
decreased by 8,257.80
1 Week
136,959.38
increased by 13,022.68
1 Month
195,345.83
increased by 71,409.13
Analysis last updated: Tuesday, October 6, 2026 at 06:10 PM UTC
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How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jun 15, 2004 to Oct 2, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 173286 trading days (~687.6 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 ~173286 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 3.7797 | |
| αARCH | 0.1447 | |
| βGARCH | 0.8553 |
Spline Coefficients
K=10
| γ1 | -4.8928 | |
| γ2 | 8.6522 | |
| γ3 | -10.8531 | |
| γ4 | 12.1611 | |
| γ5 | -0.2273 | |
| γ6 | -15.1988 | |
| γ7 | 19.6883 | |
| γ8 | -12.7694 | |
| γ9 | 1.0473 | |
| γ10 | 2.9199 |
1.000
Persistence173286d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.7797 | |
α ARCH Response to squared shocks | 0.1447 | |
β GARCH Volatility persistence | 0.8553 |
Spline Coefficients
K=10
| γ1 | -4.8928 | |
| γ2 | 8.6522 | |
| γ3 | -10.8531 | |
| γ4 | 12.1611 | |
| γ5 | -0.2273 | |
| γ6 | -15.1988 | |
| γ7 | 19.6883 | |
| γ8 | -12.7694 | |
| γ9 | 1.0473 | |
| γ10 | 2.9199 |
Persistence:
1.000
Half-life:
173286 days
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