Turkiye Is Bankasi 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 Thursday, October 22nd, 2026
1 Day
15,334.18
decreased by 1,490.76
1 Week
14,269.00
decreased by 2,555.94
1 Month
10,672.17
decreased by 6,152.77
Analysis last updated: Thursday, October 22, 2026 at 08:29 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Mar 28, 1995 to Oct 16, 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
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High persistence: persistence 1.000, shock half-life ~86643 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.8969 | 1.23 |
| αARCH | 0.0918 | 0.08 |
| βGARCH | 0.9082 | 0.76 |
Spline Coefficients
K=2
| γ1 | 0.0162 | 0.00 |
| γ2 | -0.0423 | -0.01 |
1.000
Persistence86643d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8969 | 1.23 |
α ARCH Response to squared shocks | 0.0918 | 0.08 |
β GARCH Volatility persistence | 0.9082 | 0.76 |
Spline Coefficients
K=2
| γ1 | 0.0162 | 0.00 |
| γ2 | -0.0423 | -0.01 |
Persistence:
1.000
Half-life:
86643 days
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