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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

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Deutsche Borse TecDAX Total Return Selection Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1998 to Jul 24, 2026

Model 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

ParameterValuet-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