V-Lab
ICU Girisim Sermayesi Yatiri 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
10,009.32
increased by 7,752.11
1 Week
2,995.05
increased by 737.84
1 Month
1,236.62
decreased by 1,020.59
Analysis last updated: Tuesday, September 22, 2026 at 08:47 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Aug 16, 2004 to Sep 18, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 86643 trading days (~343.8 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 ~86643 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.0855 | 1.40 |
| αARCH | 0.1770 | 0.08 |
| βGARCH | 0.8230 | 0.38 |
Spline Coefficients
K=2
| γ1 | -0.0539 | -0.03 |
| γ2 | 0.0341 | 0.02 |
1.000
Persistence86643d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0855 | 1.40 |
α ARCH Response to squared shocks | 0.1770 | 0.08 |
β GARCH Volatility persistence | 0.8230 | 0.38 |
Spline Coefficients
K=2
| γ1 | -0.0539 | -0.03 |
| γ2 | 0.0341 | 0.02 |
Persistence:
1.000
Half-life:
86643 days
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