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V-Lab

Boston Scientific Corp GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, October 21st, 2026

1 Day

33.51%

decreased by 0.45%

1 Week

33.62%

decreased by 0.34%

1 Month

34.01%

increased by 0.05%

Analysis last updated: Tuesday, October 20, 2026 at 10:20 PM UTC

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Date Range:

from

10/20/2024

to

10/20/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Boston Scientific Corp GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 20, 1992 to Oct 16, 2026

Model Insight

With persistence 0.996, volatility shocks have a half-life of 160 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Leverage: Negative returns increase volatility 286% more than positive returns

σ

GJR-GARCH Model

Tap to view equation

High persistence: persistence 0.996, shock half-life ~160 daysLeverage: Negative returns increase volatility 286% more than positive returns
ParamValuet-stat
ωconst0.0329
2.71***
αARCH0.0136
3.03***
βGARCH0.9627
179.61***
γleverage0.0388
3.52***

0.996

Persistence

160d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0329
2.71***
α

ARCH

Response to squared shocks

0.0136
3.03***
β

GARCH

Volatility persistence

0.9627
179.61***
γ

leverage

Additional response to negative shocks

0.0388
3.52***

Persistence:

0.996

Half-life:

160 days