Development Invt Constr Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Friday, November 13th, 2026
1 Day
7,342.42
increased by 3,691.68
1 Week
4,668.25
increased by 1,017.51
1 Month
7,134.14
increased by 3,483.40
Analysis last updated: Friday, November 13, 2026 at 10:20 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Aug 10, 2011 to Nov 6, 2026Model Insight
With persistence 0.997, illiquidity shocks have a half-life of 231 trading days (~0.9 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 0.997, shock half-life ~231 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.4440 | 3.35*** |
| αARCH | 0.2023 | 6.83*** |
| βGARCH | 0.7947 | 27.60*** |
Spline Coefficients
K=10
| γ1 | -3.1713 | -1.20 |
| γ2 | 6.4730 | 1.85* |
| γ3 | -5.8325 | -3.28*** |
| γ4 | 3.2776 | 1.96* |
| γ5 | -0.5329 | -0.29 |
| γ6 | -6.8865 | -2.47** |
| γ7 | 17.7452 | 4.41*** |
| γ8 | -14.7765 | -4.51*** |
| γ9 | 1.3316 | 0.65 |
| γ10 | 6.5188 | 2.92*** |
0.997
Persistence231d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.4440 | 3.35*** |
α ARCH Response to squared shocks | 0.2023 | 6.83*** |
β GARCH Volatility persistence | 0.7947 | 27.60*** |
Spline Coefficients
K=10
| γ1 | -3.1713 | -1.20 |
| γ2 | 6.4730 | 1.85* |
| γ3 | -5.8325 | -3.28*** |
| γ4 | 3.2776 | 1.96* |
| γ5 | -0.5329 | -0.29 |
| γ6 | -6.8865 | -2.47** |
| γ7 | 17.7452 | 4.41*** |
| γ8 | -14.7765 | -4.51*** |
| γ9 | 1.3316 | 0.65 |
| γ10 | 6.5188 | 2.92*** |
Persistence:
0.997
Half-life:
231 days
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