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V-Lab

Woolworths Holdings Ltd/South Africa GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, August 5th, 2026

1 Day

28.89%

decreased by 0.73%

1 Week

29.09%

decreased by 0.53%

1 Month

29.76%

increased by 0.14%

Analysis last updated: Wednesday, August 5, 2026 at 08:03 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Woolworths Holdings Ltd/South Africa GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 3, 1997 to Jul 31, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 102% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0979
18.03***
α

ARCH

Response to squared shocks

0.0359
12.81***
β

GARCH

Volatility persistence

0.9233
376.70***
γ

leverage

Additional response to negative shocks

0.0367
6.76***

Persistence:

0.977

Half-life:

30 days