V-Lab
Pt Mega Perintis Tbk Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Wednesday, September 30th, 2026
1 Day
24,249.21
increased by 22,609.43
1 Week
5,800.98
increased by 4,161.20
1 Month
1,681.97
increased by 42.19
Analysis last updated: Wednesday, September 30, 2026 at 09:08 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Dec 12, 2018 to Sep 25, 2026Model Insight
This model fits a time-varying baseline (a spline), so illiquidity mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 42 trading days.
μ
ILLIQ-SMEM Model
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Time-varying baseline: illiquidity reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.9596 | 0.81 |
| αARCH | 0.7121 | 6.81*** |
| βGARCH | 0.2717 | 3.66*** |
Spline Coefficients
K=8
| γ1 | -1.1264 | -1.17 |
| γ2 | 2.5920 | 1.45 |
| γ3 | -4.3815 | -1.80* |
| γ4 | 6.2024 | 2.20** |
| γ5 | -4.9234 | -1.79* |
| γ6 | 1.2360 | 0.44 |
| γ7 | 2.8678 | 1.33 |
| γ8 | -6.7359 | -2.73*** |
0.984
Persistence42d
Half-lifeμ
ILLIQ-SMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.9596 | 0.81 |
α ARCH Response to squared shocks | 0.7121 | 6.81*** |
β GARCH Volatility persistence | 0.2717 | 3.66*** |
Spline Coefficients
K=8
| γ1 | -1.1264 | -1.17 |
| γ2 | 2.5920 | 1.45 |
| γ3 | -4.3815 | -1.80* |
| γ4 | 6.2024 | 2.20** |
| γ5 | -4.9234 | -1.79* |
| γ6 | 1.2360 | 0.44 |
| γ7 | 2.8678 | 1.33 |
| γ8 | -6.7359 | -2.73*** |
Persistence:
0.984
Half-life:
42 days
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