Sia Engineering Co Ltd Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Thursday, November 5th, 2026
1 Day
3,926.64
decreased by 709.42
1 Week
3,823.76
decreased by 812.30
1 Month
4,194.47
decreased by 441.59
Analysis last updated: Thursday, November 5, 2026 at 09:34 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 26, 2001 to Nov 2, 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 14 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 | 1.9507 | 3.51*** |
| αARCH | 0.1668 | 6.40*** |
| βGARCH | 0.7863 | 27.00*** |
Spline Coefficients
K=6
| γ1 | -0.1316 | -2.46** |
| γ2 | 0.2247 | 3.19*** |
| γ3 | -0.1643 | -2.67*** |
| γ4 | 0.1437 | 1.94* |
| γ5 | -0.0861 | -1.48 |
| γ6 | -0.0931 | -1.69* |
0.953
Persistence14d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.9507 | 3.51*** |
α ARCH Response to squared shocks | 0.1668 | 6.40*** |
β GARCH Volatility persistence | 0.7863 | 27.00*** |
Spline Coefficients
K=6
| γ1 | -0.1316 | -2.46** |
| γ2 | 0.2247 | 3.19*** |
| γ3 | -0.1643 | -2.67*** |
| γ4 | 0.1437 | 1.94* |
| γ5 | -0.0861 | -1.48 |
| γ6 | -0.0931 | -1.69* |
Persistence:
0.953
Half-life:
14 days
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