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Wal-Mart Stores Inc GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

32.89%

decreased by 0.62%

1 Week

32.84%

decreased by 0.67%

1 Month

32.63%

decreased by 0.88%

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 GJR-GARCH

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 0.994, volatility shocks have a half-life of 107 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Leverage: Negative returns increase volatility 137% more than positive returns

σ

GJR-GARCH Model

Tap to view equation

High persistence: persistence 0.994, shock half-life ~107 daysLeverage: Negative returns increase volatility 137% more than positive returns
ParamValuet-stat
ωconst0.0209
2.75***
αARCH0.0273
4.08***
βGARCH0.9476
119.91***
γleverage0.0372
2.56**

0.994

Persistence

107d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0209
2.75***
α

ARCH

Response to squared shocks

0.0273
4.08***
β

GARCH

Volatility persistence

0.9476
119.91***
γ

leverage

Additional response to negative shocks

0.0372
2.56**

Persistence:

0.994

Half-life:

107 days