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Boston Scientific Corp 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 Monday, September 21st, 2026

1 Day

21.58

decreased by 1.35

1 Week

23.88

increased by 0.95

1 Month

22.97

increased by 0.04

Analysis last updated: Friday, September 18, 2026 at 11:15 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Boston Scientific Corp ILLIQ-SMEM

News Impact Curve

How returns affect tomorrow's illiquidity

Illiquidity Forecast

How illiquidity evolves over time

Parameter Estimates

May 20, 1992 to Sep 18, 2026

Model Insight

With persistence 1.000, illiquidity shocks have a half-life of 231049 trading days (~916.9 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 ~231049 days
ParamValuet-stat
ωconst1.1695
5.93***
αARCH0.0721
4.27***
βGARCH0.9279
55.04***
γi Spline Coefficients
K=1
γ10.0130
1.47

1.000

Persistence

231049d

Half-life
μ

ILLIQ-SMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.1695
5.93***
α

ARCH

Response to squared shocks

0.0721
4.27***
β

GARCH

Volatility persistence

0.9279
55.04***
γi Spline Coefficients
K=1
γ10.0130
1.47

Persistence:

1.000

Half-life:

231049 days