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V-Lab

Egyptian Financial Group Hermes Stock Market Index GJR-GARCH Volatility Analysis

Volatility prediction for Sunday, August 23rd, 2026

1 Day

21.85%

increased by 5.86%

1 Week

22.10%

increased by 6.11%

1 Month

22.89%

increased by 6.90%

Analysis last updated: Friday, August 21, 2026 at 08:18 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Egyptian Financial Group Hermes Stock Market Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1995 to Aug 20, 2026

Model Insight

This asset exhibits a notable leverage effect: negative returns increase next-day volatility 54% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0912
12.69***
α

ARCH

Response to squared shocks

0.1167
13.34***
β

GARCH

Volatility persistence

0.8159
105.09***
γ

leverage

Additional response to negative shocks

0.0626
5.44***

Persistence:

0.964

Half-life:

19 days