V-Lab
Deutsche Borse TecDAX Total Return Selection Index GJR-GARCH Volatility Analysis
Volatility prediction for Friday, July 31st, 2026
1 Day
18.53%
decreased by 0.70%
1 Week
18.80%
decreased by 0.43%
1 Month
19.75%
increased by 0.52%
Analysis last updated: Thursday, July 30, 2026 at 07:53 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1998 to Jul 24, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 147% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0370 | 23.97*** |
α ARCH Response to squared shocks | 0.0583 | 18.19*** |
β GARCH Volatility persistence | 0.8862 | 432.08*** |
γ leverage Additional response to negative shocks | 0.0860 | 13.93*** |
Persistence:
0.988
Half-life:
55 days
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