V-Lab
Ral Yatirim Holding As Spline ILLIQ Liquidity Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Illiquidity prediction for Tuesday, September 22nd, 2026
1 Day
10,813.25
increased by 10,402.05
1 Week
2,395.20
increased by 1,984.00
1 Month
620.62
increased by 209.42
Analysis last updated: Tuesday, September 22, 2026 at 08:43 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Oct 29, 1996 to Sep 18, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 8664 trading days (~34.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
ILLIQ-SMEM Model
Tap to view equation
High persistence: persistence 1.000, shock half-life ~8664 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.2429 | 3.68*** |
| αARCH | 0.1863 | 3.39*** |
| βGARCH | 0.8136 | 14.75*** |
Spline Coefficients
K=9
| γ1 | -1.1528 | -1.51 |
| γ2 | -1.6539 | -0.78 |
| γ3 | 4.7834 | 2.11** |
| γ4 | -2.8327 | -1.38 |
| γ5 | 2.1237 | 0.71 |
| γ6 | 4.1813 | 1.78* |
| γ7 | -7.6785 | -2.99*** |
| γ8 | -2.3933 | -0.57 |
| γ9 | 8.5964 | 1.49 |
1.000
Persistence8664d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2429 | 3.68*** |
α ARCH Response to squared shocks | 0.1863 | 3.39*** |
β GARCH Volatility persistence | 0.8136 | 14.75*** |
Spline Coefficients
K=9
| γ1 | -1.1528 | -1.51 |
| γ2 | -1.6539 | -0.78 |
| γ3 | 4.7834 | 2.11** |
| γ4 | -2.8327 | -1.38 |
| γ5 | 2.1237 | 0.71 |
| γ6 | 4.1813 | 1.78* |
| γ7 | -7.6785 | -2.99*** |
| γ8 | -2.3933 | -0.57 |
| γ9 | 8.5964 | 1.49 |
Persistence:
1.000
Half-life:
8664 days
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