V-Lab
Altria Group Inc AGARCH Volatility Analysis
Volatility prediction for Wednesday, September 9th, 2026
1 Day
27.60%
decreased by 0.59%
1 Week
27.66%
decreased by 0.53%
1 Month
27.90%
decreased by 0.29%
Analysis last updated: Tuesday, September 8, 2026 at 10:51 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 4, 2026Model Insight
The news-impact curve is shifted (γ = 0.62) so that negative returns raise next-day volatility more than positive returns of the same size. The gap is largest for small shocks and narrows for larger ones.
σ
AGARCH Model
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Asymmetry: negative returns raise volatility more
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0189 | 1.91* |
| αARCH | 0.0659 | 9.24*** |
| βGARCH | 0.9219 | 108.19*** |
| γleverage | 0.6198 | 4.53*** |
0.988
Persistence56d
Half-lifeσ
AGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0189 | 1.91* |
α ARCH Response to squared shocks | 0.0659 | 9.24*** |
β GARCH Volatility persistence | 0.9219 | 108.19*** |
γ leverage Additional response to negative shocks | 0.6198 | 4.53*** |
Persistence:
0.988
Half-life:
56 days
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