Skip to main content
V-Lab
V-Lab

Wal-Mart Stores Inc Asy. MEM Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

21.26%

decreased by 0.83%

1 Week

21.44%

decreased by 0.65%

1 Month

22.13%

increased by 0.04%

Analysis last updated: Friday, September 11, 2026 at 11:36 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Wal-Mart Stores Inc AMEM

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

This asset exhibits a modest leverage effect: negative returns increase next-day volatility 36% more than equivalent positive returns.

μ

AMEM Model

Tap to view equation

Leverage: Negative returns increase volatility 36% more than positive returns
ParamValuet-stat
ωconst0.0340
7.64***
αARCH0.1401
10.88***
βGARCH0.8244
79.48***
γleverage0.0507
2.30**

0.990

Persistence

68d

Half-life
μ

AMEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0340
7.64***
α

ARCH

Response to squared shocks

0.1401
10.88***
β

GARCH

Volatility persistence

0.8244
79.48***
γ

leverage

Additional response to negative shocks

0.0507
2.30**

Persistence:

0.990

Half-life:

68 days