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V-Lab

G-Devs SA GJR-GARCH Volatility Analysis

Volatility prediction for Friday, July 24th, 2026

1 Day

78.49%

increased by 21.98%

1 Week

89.88%

increased by 33.37%

1 Month

118.04%

increased by 61.53%

Analysis last updated: Friday, July 24, 2026 at 08:02 PM UTC

Date Range:

from

to

6M ·

1Y ·

All

graph of G-Devs SA GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 4, 2024 to Jul 17, 2026

Model Insight

Volatility shocks decay with a half-life of 16 trading days, meaning a shock loses half its impact after approximately 16 days.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.0000
8.52***
α

ARCH

Response to squared shocks

0.4620
5.51***
β

GARCH

Volatility persistence

0.5109
18.46***
γ

leverage

Additional response to negative shocks

-0.0302
-0.29

Persistence:

0.958

Half-life:

16 days