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Altria Group Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

21.15%

decreased by 1.20%

1 Week

21.29%

decreased by 1.06%

1 Month

21.81%

decreased by 0.54%

Analysis last updated: Friday, September 18, 2026 at 11:40 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Altria Group Inc GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 64 trading days, meaning a shock loses half its impact after approximately 64 days. Returns follow a Student-t distribution with v = 4.57 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

Shock decay: Shocks decay with a 64-day half-lifev = 4.57 · fat tails
ParamValuet-stat
ωconst2.8909
1.00
αARCH0.0713
8.67***
βGARCH0.9893
93.55***
νDF4.5721
2.81***

0.989

Persistence

64d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.8909
1.00
α

ARCH

Response to squared shocks

0.0713
8.67***
β

GARCH

Volatility persistence

0.9893
93.55***
ν

DF

Student-t tail thickness

4.5721
2.81***

Persistence:

0.989

Half-life:

64 days