V-Lab
Boston Scientific Corp Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, September 21st, 2026
1 Day
23.09
decreased by 1.20
1 Week
25.05
increased by 0.76
1 Month
23.70
decreased by 0.59
Analysis last updated: Friday, September 18, 2026 at 11:14 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
May 20, 1992 to Sep 18, 2026Model Insight
With persistence 0.999, illiquidity shocks have a half-life of 768 trading days (~3.0 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Asymmetry: Illiquidity rises 88% more after negative returns
μ
ILLIQ-AMEM Model
Tap to view equation
High persistence: persistence 0.999, shock half-life ~768 daysAsymmetry: Illiquidity rises 88% more after negative returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1154 | 2.27** |
| αARCH | 0.0466 | 7.00*** |
| βGARCH | 0.9320 | 216.79*** |
| γleverage | 0.0410 | 3.91*** |
0.999
Persistence768d
Half-lifeμ
ILLIQ-AMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1154 | 2.27** |
α ARCH Response to squared shocks | 0.0466 | 7.00*** |
β GARCH Volatility persistence | 0.9320 | 216.79*** |
γ leverage Additional response to negative shocks | 0.0410 | 3.91*** |
Persistence:
0.999
Half-life:
768 days
Other Boston Scientific Corp Analyses
Other Asymmetric ILLIQ Analyses on Equities