V-Lab
General Electric Co Asy. MEM Volatility Analysis
Volatility prediction for Wednesday, September 23rd, 2026
1 Day
29.22%
decreased by 0.51%
1 Week
29.35%
decreased by 0.38%
1 Month
29.84%
increased by 0.11%
Analysis last updated: Tuesday, September 22, 2026 at 09:44 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 18, 2026Model Insight
With persistence 0.995, volatility shocks have a half-life of 140 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Leverage: Negative returns increase volatility 54% more than positive returns
μ
AMEM Model
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High persistence: persistence 0.995, shock half-life ~140 daysLeverage: Negative returns increase volatility 54% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0317 | 6.74*** |
| αARCH | 0.1313 | 10.83*** |
| βGARCH | 0.8286 | 93.24*** |
| γleverage | 0.0703 | 3.36*** |
0.995
Persistence140d
Half-lifeμ
AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0317 | 6.74*** |
α ARCH Response to squared shocks | 0.1313 | 10.83*** |
β GARCH Volatility persistence | 0.8286 | 93.24*** |
γ leverage Additional response to negative shocks | 0.0703 | 3.36*** |
Persistence:
0.995
Half-life:
140 days
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