Deutsche Borse SDAX Performance Index (XETRA) GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, July 21st, 2026
1 Day
13.95%
decreased by 0.69%
1 Week
14.26%
decreased by 0.38%
1 Month
15.19%
increased by 0.55%
Analysis last updated: Monday, July 20, 2026 at 07:10 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 5, 2013 to Jul 17, 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
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0506 | 19.07*** |
α ARCH Response to squared shocks | 0.0304 | 6.57*** |
β GARCH Volatility persistence | 0.8467 | 199.75*** |
γ leverage Additional response to negative shocks | 0.1625 | 13.47*** |
Persistence:
0.958
Half-life:
16 days
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