Suryamas Dutamakmur (Pt) Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, October 27th, 2026
1 Day
14,531.14
increased by 11,063.67
1 Week
5,434.27
increased by 1,966.80
1 Month
3,503.95
increased by 36.48
Analysis last updated: Tuesday, October 27, 2026 at 09:43 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Nov 30, 1995 to Oct 23, 2026Model Insight
With persistence 0.999, illiquidity shocks have a half-life of 973 trading days (~3.9 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 0.999, shock half-life ~973 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.8213 | 3.19*** |
| αARCH | 0.2843 | 8.23*** |
| βGARCH | 0.7150 | 20.75*** |
Spline Coefficients
K=10
| γ1 | 0.5984 | 1.10 |
| γ2 | -1.3692 | -1.83* |
| γ3 | 0.9581 | 3.12*** |
| γ4 | -0.1525 | -0.49 |
| γ5 | 0.1468 | 0.42 |
| γ6 | -0.8411 | -2.43** |
| γ7 | 1.9192 | 5.07*** |
| γ8 | -6.4724 | -10.17*** |
| γ9 | 12.8893 | 9.68*** |
| γ10 | -10.6194 | -6.85*** |
0.999
Persistence973d
Half-lifeμ
ILLIQ-SMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8213 | 3.19*** |
α ARCH Response to squared shocks | 0.2843 | 8.23*** |
β GARCH Volatility persistence | 0.7150 | 20.75*** |
Spline Coefficients
K=10
| γ1 | 0.5984 | 1.10 |
| γ2 | -1.3692 | -1.83* |
| γ3 | 0.9581 | 3.12*** |
| γ4 | -0.1525 | -0.49 |
| γ5 | 0.1468 | 0.42 |
| γ6 | -0.8411 | -2.43** |
| γ7 | 1.9192 | 5.07*** |
| γ8 | -6.4724 | -10.17*** |
| γ9 | 12.8893 | 9.68*** |
| γ10 | -10.6194 | -6.85*** |
Persistence:
0.999
Half-life:
973 days
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