V-Lab
SES SA Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, September 29th, 2026
1 Day
5,306.45
increased by 420.90
1 Week
4,945.53
increased by 59.98
1 Month
4,556.65
decreased by 328.90
Analysis last updated: Tuesday, September 29, 2026 at 06:35 PM UTC
Press Delete or Backspace to remove this series.
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
May 5, 2004 to Sep 25, 2026Model Insight
This model fits a time-varying baseline (a spline), so illiquidity mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 68 trading days.
μ
ILLIQ-SMEM Model
Tap to view equation
Time-varying baseline: illiquidity reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.5873 | 9.30*** |
| αARCH | 0.0556 | 9.85*** |
| βGARCH | 0.9343 | 137.72*** |
Spline Coefficients
K=1
| γ1 | 0.0093 | 7.65*** |
0.990
Persistence68d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.5873 | 9.30*** |
α ARCH Response to squared shocks | 0.0556 | 9.85*** |
β GARCH Volatility persistence | 0.9343 | 137.72*** |
Spline Coefficients
K=1
| γ1 | 0.0093 | 7.65*** |
Persistence:
0.990
Half-life:
68 days
Other SES SA Analyses
Other Spline ILLIQ Analyses on Depositary Receipts