V-Lab
Societe BIC SA Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Friday, September 11th, 2026
1 Day
3,867.82
decreased by 114.25
1 Week
3,939.93
decreased by 42.14
1 Month
4,152.35
increased by 170.28
Analysis last updated: Friday, September 11, 2026 at 06:58 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jun 28, 1991 to Sep 4, 2026Model Insight
With persistence 0.999, illiquidity shocks have a half-life of 464 trading days (~1.8 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 0.999, shock half-life ~464 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.2010 | 5.90*** |
| αARCH | 0.0568 | 8.70*** |
| βGARCH | 0.9417 | 126.83*** |
Spline Coefficients
K=1
| γ1 | -0.0033 | -1.13 |
0.999
Persistence464d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2010 | 5.90*** |
α ARCH Response to squared shocks | 0.0568 | 8.70*** |
β GARCH Volatility persistence | 0.9417 | 126.83*** |
Spline Coefficients
K=1
| γ1 | -0.0033 | -1.13 |
Persistence:
0.999
Half-life:
464 days
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