V-Lab
Egyptian Financial Group Hermes Stock Market Index GJR-GARCH Volatility Analysis
Volatility prediction for Sunday, July 26th, 2026
1 Day
13.72%
decreased by 0.51%
1 Week
14.81%
increased by 0.58%
1 Month
17.84%
increased by 3.61%
Analysis last updated: Friday, July 24, 2026 at 11:21 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1995 to Jul 23, 2026Model Insight
This asset exhibits a notable leverage effect: negative returns increase next-day volatility 53% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0909 | 12.63*** |
α ARCH Response to squared shocks | 0.1169 | 13.33*** |
β GARCH Volatility persistence | 0.8161 | 105.17*** |
γ leverage Additional response to negative shocks | 0.0621 | 5.39*** |
Persistence:
0.964
Half-life:
19 days
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