V-Lab
General Electric Co EGARCH Volatility Analysis
Volatility prediction for Monday, September 28th, 2026
1 Day
29.78%
decreased by 0.23%
1 Week
29.90%
decreased by 0.11%
1 Month
30.35%
increased by 0.34%
Analysis last updated: Saturday, September 26, 2026 at 12:15 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 25, 2026Model Insight
With persistence 0.993, volatility shocks have a half-life of 103 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Leverage: Negative returns increase volatility 191% more than positive returns
σ
EGARCH Model
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High persistence: persistence 0.993, shock half-life ~103 daysLeverage: Negative returns increase volatility 191% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0124 | 1.87* |
| αARCH | 0.1038 | 8.40*** |
| βGARCH | 0.9933 | 416.82*** |
| γleverage | -0.0507 | -5.48*** |
0.993
Persistence103d
Half-lifeσ
EGARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0124 | 1.87* |
α ARCH Response to squared shocks | 0.1038 | 8.40*** |
β GARCH Volatility persistence | 0.9933 | 416.82*** |
γ leverage Additional response to negative shocks | -0.0507 | -5.48*** |
Persistence:
0.993
Half-life:
103 days
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