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V-Lab

Wal-Mart Stores Inc MF2-GARCH Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

52.74%

decreased by 3.54%

1 Week

49.84%

decreased by 6.44%

1 Month

41.66%

decreased by 14.62%

Analysis last updated: Friday, August 21, 2026 at 10:21 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Wal-Mart Stores Inc MF2-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Aug 21, 2026

Model Insight

This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.

σ

MF2-GARCH Model

Tap to view equation

ParameterValuet-statistic
m

window

Rolling window length

66
α

ARCH

Response to squared shocks

0.0212
8.76***
β

GARCH

Volatility persistence

0.8205
60.35***
γ

leverage

Additional response to negative shocks

0.0879
15.25***
λ₁

tau intercept

Baseline long-term coefficient

0.0304
1.33
λ₂

forecast adj.

Forecast performance sensitivity

0.0663
1.50
λ₃

tau persistence

Long-term factor persistence

0.9211
17.26***

Persistence:

0.886

Half-life:

6 days