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V-Lab

Boston Scientific Corp GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, September 8th, 2026

1 Day

39.92%

decreased by 0.51%

1 Week

39.96%

decreased by 0.47%

1 Month

40.10%

decreased by 0.33%

Analysis last updated: Friday, September 4, 2026 at 10:38 PM UTC

Date Range:

from

to

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 Sep 4, 2026

Model Insight

With persistence 0.996, volatility shocks have a half-life of 166 trading days (~0.7 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Leverage: Negative returns increase volatility 292% more than positive returns

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0325
2.68***
α

ARCH

Response to squared shocks

0.0134
3.00***
β

GARCH

Volatility persistence

0.9630
180.63***
γ

leverage

Additional response to negative shocks

0.0390
3.57***

Persistence:

0.996

Half-life:

166 days