IBEX 35 Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, October 23rd, 2026
1 Day
21.09%
increased by 4.18%
1 Week
21.10%
increased by 4.19%
1 Month
21.11%
increased by 4.20%
Analysis last updated: Thursday, October 22, 2026 at 04:14 PM UTC
Press Delete or Backspace to remove this series.
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Oct 16, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 396% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
Leverage: Negative returns increase volatility 396% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0435 | 5.70*** |
| αARCH | 0.0316 | 2.75*** |
| βGARCH | 0.8813 | 105.54*** |
| γleverage | 0.1253 | 5.20*** |
0.976
Persistence28d
Half-lifeσ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0435 | 5.70*** |
α ARCH Response to squared shocks | 0.0316 | 2.75*** |
β GARCH Volatility persistence | 0.8813 | 105.54*** |
γ leverage Additional response to negative shocks | 0.1253 | 5.20*** |
Persistence:
0.976
Half-life:
28 days
Other IBEX 35 Index Analyses
Other GJR-GARCH Analyses on Equity Indices