V-Lab
KBR Inc EGARCH Volatility Analysis
Volatility prediction for Monday, September 14th, 2026
1 Day
31.14%
decreased by 1.17%
1 Week
31.68%
decreased by 0.63%
1 Month
33.61%
increased by 1.30%
Analysis last updated: Saturday, September 12, 2026 at 12:13 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 16, 2006 to Sep 11, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 195% more than equivalent positive returns.
σ
EGARCH Model
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Leverage: Negative returns increase volatility 195% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0514 | 2.27** |
| αARCH | 0.1272 | 5.53*** |
| βGARCH | 0.9748 | 119.37*** |
| γleverage | -0.0628 | -3.17*** |
0.975
Persistence27d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0514 | 2.27** |
α ARCH Response to squared shocks | 0.1272 | 5.53*** |
β GARCH Volatility persistence | 0.9748 | 119.37*** |
γ leverage Additional response to negative shocks | -0.0628 | -3.17*** |
Persistence:
0.975
Half-life:
27 days
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