Epiroc Ab Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Wednesday, October 21st, 2026
1 Day
5,786.79
increased by 63.64
1 Week
5,815.50
increased by 92.35
1 Month
8,597.27
increased by 2,874.12
Analysis last updated: Wednesday, October 21, 2026 at 08:45 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Aug 8, 2018 to Oct 16, 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 16 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 | 1.7605 | 1.35 |
| αARCH | 0.3533 | 2.75*** |
| βGARCH | 0.6040 | 9.06*** |
Spline Coefficients
K=9
| γ1 | -1.5830 | -0.61 |
| γ2 | 4.3918 | 1.12 |
| γ3 | -7.9356 | -2.19** |
| γ4 | 9.2674 | 2.38** |
| γ5 | -6.0460 | -2.05** |
| γ6 | 4.2452 | 1.66* |
| γ7 | -4.2149 | -1.48 |
| γ8 | 1.2675 | 0.56 |
| γ9 | 3.1154 | 1.67* |
0.957
Persistence16d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.7605 | 1.35 |
α ARCH Response to squared shocks | 0.3533 | 2.75*** |
β GARCH Volatility persistence | 0.6040 | 9.06*** |
Spline Coefficients
K=9
| γ1 | -1.5830 | -0.61 |
| γ2 | 4.3918 | 1.12 |
| γ3 | -7.9356 | -2.19** |
| γ4 | 9.2674 | 2.38** |
| γ5 | -6.0460 | -2.05** |
| γ6 | 4.2452 | 1.66* |
| γ7 | -4.2149 | -1.48 |
| γ8 | 1.2675 | 0.56 |
| γ9 | 3.1154 | 1.67* |
Persistence:
0.957
Half-life:
16 days
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