V-Lab
Zhengye Biotechnology Holding Ltd Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Friday, September 11th, 2026
1 Day
165,817.90
increased by 9,339.50
1 Week
180,148.08
increased by 23,669.68
1 Month
205,023.65
increased by 48,545.25
Analysis last updated: Thursday, September 10, 2026 at 09:47 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Jan 7, 2025 to Sep 4, 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 8 trading days.
μ
ILLIQ-SMEM Model
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Time-varying baseline: illiquidity reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.2474 | 2.89*** |
| αARCH | 0.4698 | 6.07*** |
| βGARCH | 0.4494 | 6.59*** |
Spline Coefficients
K=4
| γ1 | 7.9839 | 1.21 |
| γ2 | 5.8771 | 0.55 |
| γ3 | -22.5284 | -2.21** |
| γ4 | -16.4402 | -1.09 |
0.919
Persistence8d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2474 | 2.89*** |
α ARCH Response to squared shocks | 0.4698 | 6.07*** |
β GARCH Volatility persistence | 0.4494 | 6.59*** |
Spline Coefficients
K=4
| γ1 | 7.9839 | 1.21 |
| γ2 | 5.8771 | 0.55 |
| γ3 | -22.5284 | -2.21** |
| γ4 | -16.4402 | -1.09 |
Persistence:
0.919
Half-life:
8 days
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