Boston Scientific Corp Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Tuesday, November 3rd, 2026
1 Day
21.88
increased by 2.63
1 Week
20.27
increased by 1.02
1 Month
19.04
decreased by 0.21
Analysis last updated: Monday, November 2, 2026 at 10:26 PM UTC
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News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
May 20, 1992 to Oct 30, 2026Model Insight
With persistence 0.998, illiquidity shocks have a half-life of 326 trading days (~1.3 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 0.998, shock half-life ~326 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1382 | 6.02*** |
| αARCH | 0.0743 | 15.60*** |
| βGARCH | 0.9236 | 190.20*** |
Spline Coefficients
K=1
| γ1 | 0.0006 | 0.52 |
0.998
Persistence326d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1382 | 6.02*** |
α ARCH Response to squared shocks | 0.0743 | 15.60*** |
β GARCH Volatility persistence | 0.9236 | 190.20*** |
Spline Coefficients
K=1
| γ1 | 0.0006 | 0.52 |
Persistence:
0.998
Half-life:
326 days
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