V-Lab
Boston Scientific Corp Asymmetric ILLIQ Liquidity Analysis
Illiquidity prediction for Monday, August 31st, 2026
1 Day
23.25
decreased by 1.35
1 Week
22.94
decreased by 1.66
1 Month
19.79
decreased by 4.81
Analysis last updated: Friday, August 28, 2026 at 10:21 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
May 20, 1992 to Aug 28, 2026Model Insight
With persistence 0.999, illiquidity shocks have a half-life of 771 trading days (~3.1 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
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1164 | 2.28** |
α ARCH Response to squared shocks | 0.0467 | 7.00*** |
β GARCH Volatility persistence | 0.9318 | 216.36*** |
γ leverage Additional response to negative shocks | 0.0412 | 3.91*** |
Persistence:
0.999
Half-life:
771 days
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