V-Lab
Boeing Co/The EGARCH Volatility Analysis
Volatility prediction for Thursday, September 17th, 2026
1 Day
32.42%
increased by 4.22%
1 Week
32.57%
increased by 4.37%
1 Month
33.15%
increased by 4.95%
Analysis last updated: Thursday, September 17, 2026 at 04:20 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 11, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 123% more than equivalent positive returns.
σ
EGARCH Model
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Leverage: Negative returns increase volatility 123% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0293 | 1.73* |
| αARCH | 0.1268 | 8.51*** |
| βGARCH | 0.9829 | 151.21*** |
| γleverage | -0.0482 | -2.67*** |
0.983
Persistence40d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0293 | 1.73* |
α ARCH Response to squared shocks | 0.1268 | 8.51*** |
β GARCH Volatility persistence | 0.9829 | 151.21*** |
γ leverage Additional response to negative shocks | -0.0482 | -2.67*** |
Persistence:
0.983
Half-life:
40 days
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