Axel Mark Inc 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 Monday, October 26th, 2026
1 Day
22,119.13
increased by 19,319.18
1 Week
6,498.00
increased by 3,698.05
1 Month
3,071.90
increased by 271.95
Analysis last updated: Sunday, October 25, 2026 at 05:15 AM UTC
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How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Mar 18, 2008 to Oct 23, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 86643 trading days (~343.8 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 ~86643 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.0438 | 0.17 |
| αARCH | 0.2496 | 0.01 |
| βGARCH | 0.7503 | 0.04 |
Spline Coefficients
K=2
| γ1 | -0.4012 | -0.02 |
| γ2 | 0.9760 | 0.03 |
1.000
Persistence86643d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0438 | 0.17 |
α ARCH Response to squared shocks | 0.2496 | 0.01 |
β GARCH Volatility persistence | 0.7503 | 0.04 |
Spline Coefficients
K=2
| γ1 | -0.4012 | -0.02 |
| γ2 | 0.9760 | 0.03 |
Persistence:
1.000
Half-life:
86643 days
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