Betonjaya Manunggal Tbk Pt Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Thursday, November 5th, 2026
1 Day
11,181.75
decreased by 2,085.52
1 Week
7,806.60
decreased by 5,460.67
1 Month
5,729.70
decreased by 7,537.57
Analysis last updated: Thursday, November 5, 2026 at 10:16 PM UTC
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How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Apr 21, 2003 to Nov 2, 2026Model Insight
With persistence 0.997, illiquidity shocks have a half-life of 210 trading days (~0.8 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 0.997, shock half-life ~210 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 11.9051 | 2.80*** |
| αARCH | 0.2107 | 7.82*** |
| βGARCH | 0.7860 | 29.06*** |
Spline Coefficients
K=9
| γ1 | 0.8385 | 1.07 |
| γ2 | -0.3197 | -0.25 |
| γ3 | -0.1248 | -0.16 |
| γ4 | -2.8410 | -5.57*** |
| γ5 | 5.4704 | 6.75*** |
| γ6 | -4.7144 | -4.12*** |
| γ7 | 2.7671 | 2.71*** |
| γ8 | -2.4620 | -3.70*** |
| γ9 | 2.5019 | 3.28*** |
0.997
Persistence210d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 11.9051 | 2.80*** |
α ARCH Response to squared shocks | 0.2107 | 7.82*** |
β GARCH Volatility persistence | 0.7860 | 29.06*** |
Spline Coefficients
K=9
| γ1 | 0.8385 | 1.07 |
| γ2 | -0.3197 | -0.25 |
| γ3 | -0.1248 | -0.16 |
| γ4 | -2.8410 | -5.57*** |
| γ5 | 5.4704 | 6.75*** |
| γ6 | -4.7144 | -4.12*** |
| γ7 | 2.7671 | 2.71*** |
| γ8 | -2.4620 | -3.70*** |
| γ9 | 2.5019 | 3.28*** |
Persistence:
0.997
Half-life:
210 days
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