Skip to main content
V-Lab

Wal-Mart Stores Inc GARCH Volatility Analysis

Volatility prediction for Monday, August 10th, 2026

1 Day

22.87%

decreased by 0.52%

1 Week

22.93%

decreased by 0.46%

1 Month

23.13%

decreased by 0.26%

Analysis last updated: Friday, August 7, 2026 at 10:18 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Wal-Mart Stores Inc GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Aug 7, 2026

Model Insight

With persistence 0.993, volatility shocks have a half-life of 93 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

σ

GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0203
15.83***
α

ARCH

Response to squared shocks

0.0462
28.34***
β

GARCH

Volatility persistence

0.9463
503.09***

Persistence:

0.993

Half-life:

93 days