V-Lab
Altria Group Inc MEM Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
24.11%
decreased by 0.73%
1 Week
24.27%
decreased by 0.57%
1 Month
24.85%
increased by 0.01%
Analysis last updated: Friday, September 4, 2026 at 11:03 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
Volatility shocks decay with a half-life of 37 trading days, meaning a shock loses half its impact after approximately 37 days.
μ
MEM Model
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Shock decay: Shocks decay with a 37-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0585 | 2.20** |
| αARCH | 0.1750 | 9.54*** |
| βGARCH | 0.8066 | 56.39*** |
0.982
Persistence37d
Half-lifeμ
MEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0585 | 2.20** |
α ARCH Response to squared shocks | 0.1750 | 9.54*** |
β GARCH Volatility persistence | 0.8066 | 56.39*** |
Persistence:
0.982
Half-life:
37 days
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