Apex Investment Company Psc Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Sunday, October 18th, 2026
1 Day
7,749.72
increased by 4,026.67
1 Week
5,213.27
increased by 1,490.22
1 Month
3,715.76
decreased by 7.29
Analysis last updated: Friday, October 16, 2026 at 06:03 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Oct 28, 2005 to Oct 15, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 4101 trading days (~16.3 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 ~4101 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.7213 | 6.38*** |
| αARCH | 0.2014 | 9.28*** |
| βGARCH | 0.7985 | 36.79*** |
Spline Coefficients
K=7
| γ1 | -3.0401 | -2.09** |
| γ2 | 9.6948 | 3.04*** |
| γ3 | -10.3387 | -3.51*** |
| γ4 | 3.8938 | 2.97*** |
| γ5 | -1.4594 | -3.17*** |
| γ6 | 2.9430 | 6.92*** |
| γ7 | -2.3136 | -5.94*** |
1.000
Persistence4101d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.7213 | 6.38*** |
α ARCH Response to squared shocks | 0.2014 | 9.28*** |
β GARCH Volatility persistence | 0.7985 | 36.79*** |
Spline Coefficients
K=7
| γ1 | -3.0401 | -2.09** |
| γ2 | 9.6948 | 3.04*** |
| γ3 | -10.3387 | -3.51*** |
| γ4 | 3.8938 | 2.97*** |
| γ5 | -1.4594 | -3.17*** |
| γ6 | 2.9430 | 6.92*** |
| γ7 | -2.3136 | -5.94*** |
Persistence:
1.000
Half-life:
4101 days
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