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Wal-Mart Stores Inc AGARCH Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

29.95%

decreased by 0.77%

1 Week

29.90%

decreased by 0.82%

1 Month

29.71%

decreased by 1.01%

Analysis last updated: Friday, September 11, 2026 at 11:37 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Wal-Mart Stores Inc AGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 11, 2026

Model Insight

With persistence 0.991, volatility shocks have a half-life of 81 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

σ

AGARCH Model

Tap to view equation

High persistence: persistence 0.991, shock half-life ~81 days
ParamValuet-stat
ωconst0.0208
2.70***
αARCH0.0488
7.66***
βGARCH0.9427
127.34***
γleverage0.2732
1.67*

0.991

Persistence

81d

Half-life
σ

AGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0208
2.70***
α

ARCH

Response to squared shocks

0.0488
7.66***
β

GARCH

Volatility persistence

0.9427
127.34***
γ

leverage

Additional response to negative shocks

0.2732
1.67*

Persistence:

0.991

Half-life:

81 days