CAC 40 Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, October 9th, 2026
1 Day
17.23%
decreased by 0.36%
1 Week
17.36%
decreased by 0.23%
1 Month
17.79%
increased by 0.20%
Analysis last updated: Thursday, October 8, 2026 at 04:03 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 2, 2026Model Insight
This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.
σ
GJR-GARCH Model
Tap to view equation
Leverage: volatility responds almost entirely to negative shocks
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0349 | 4.02*** |
| αARCH | 0.0114 | 1.31 |
| βGARCH | 0.9004 | 111.39*** |
| γleverage | 0.1324 | 7.02*** |
0.978
Persistence31d
Half-lifeσ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0349 | 4.02*** |
α ARCH Response to squared shocks | 0.0114 | 1.31 |
β GARCH Volatility persistence | 0.9004 | 111.39*** |
γ leverage Additional response to negative shocks | 0.1324 | 7.02*** |
Persistence:
0.978
Half-life:
31 days
Other GJR-GARCH Analyses on Equity Indices