V-Lab
NSI NV Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, September 21st, 2026
1 Day
12,376.06
increased by 102.03
1 Week
11,814.40
decreased by 459.63
1 Month
10,101.46
decreased by 2,172.57
Analysis last updated: Sunday, September 20, 2026 at 12:46 AM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Apr 3, 1998 to Sep 18, 2026Model Insight
With persistence 0.997, illiquidity shocks have a half-life of 258 trading days (~1.0 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 0.997, shock half-life ~258 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.9255 | 2.98*** |
| αARCH | 0.0537 | 9.78*** |
| βGARCH | 0.9436 | 143.63*** |
Spline Coefficients
K=1
| γ1 | 0.0023 | 0.94 |
0.997
Persistence258d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.9255 | 2.98*** |
α ARCH Response to squared shocks | 0.0537 | 9.78*** |
β GARCH Volatility persistence | 0.9436 | 143.63*** |
Spline Coefficients
K=1
| γ1 | 0.0023 | 0.94 |
Persistence:
0.997
Half-life:
258 days
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