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V-Lab
V-Lab

KBR Inc GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

29.94%

decreased by 0.76%

1 Week

30.67%

decreased by 0.03%

1 Month

32.85%

increased by 2.15%

Analysis last updated: Saturday, September 12, 2026 at 12:13 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of KBR Inc GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 16, 2006 to Sep 11, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 300% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 300% more than positive returns
ParamValuet-stat
ωconst0.2259
3.95***
αARCH0.0291
2.34**
βGARCH0.8894
59.70***
γleverage0.0873
2.76***

0.962

Persistence

18d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.2259
3.95***
α

ARCH

Response to squared shocks

0.0291
2.34**
β

GARCH

Volatility persistence

0.8894
59.70***
γ

leverage

Additional response to negative shocks

0.0873
2.76***

Persistence:

0.962

Half-life:

18 days