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V-Lab

Wal-Mart Stores Inc EGARCH Volatility Analysis

Volatility prediction for Tuesday, September 8th, 2026

1 Day

29.81%

increased by 0.04%

1 Week

29.86%

increased by 0.09%

1 Month

30.02%

increased by 0.25%

Analysis last updated: Friday, September 4, 2026 at 10:27 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Wal-Mart Stores Inc EGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 4, 2026

Model Insight

This asset exhibits a notable leverage effect: negative returns increase next-day volatility 75% more than equivalent positive returns.

σ

EGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0182
2.33**
α

ARCH

Response to squared shocks

0.1195
6.73***
β

GARCH

Volatility persistence

0.9867
241.44***
γ

leverage

Additional response to negative shocks

-0.0327
-2.42**

Persistence:

0.987

Half-life:

52 days