V-Lab
Beijing Sifang Automation Co Ltd 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 Wednesday, September 23rd, 2026
1 Day
20.90
decreased by 2.60
1 Week
22.97
decreased by 0.53
1 Month
25.91
increased by 2.41
Analysis last updated: Wednesday, September 23, 2026 at 06:01 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 3, 2011 to Sep 18, 2026Model Insight
With persistence 1.000, illiquidity shocks have a half-life of 20386 trading days (~80.9 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 ~20386 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.8950 | 2.89*** |
| αARCH | 0.2540 | 13.71*** |
| βGARCH | 0.7459 | 40.22*** |
Spline Coefficients
K=1
| γ1 | -0.0201 | -2.06** |
1.000
Persistence20386d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8950 | 2.89*** |
α ARCH Response to squared shocks | 0.2540 | 13.71*** |
β GARCH Volatility persistence | 0.7459 | 40.22*** |
Spline Coefficients
K=1
| γ1 | -0.0201 | -2.06** |
Persistence:
1.000
Half-life:
20386 days
Other Beijing Sifang Automation Co Ltd Analyses
Other Spline ILLIQ Analyses on International Equities