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V-Lab

Deutsche Boerse AG German Stock Index DAX GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, July 17th, 2026

1 Day

15.86%

decreased by 0.71%

1 Week

16.01%

decreased by 0.56%

1 Month

16.54%

decreased by 0.03%

Analysis last updated: Thursday, July 16, 2026 at 07:44 PM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of Deutsche Boerse AG German Stock Index DAX GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 1990 to Jul 10, 2026

Model Insight

With persistence 0.991, volatility shocks have a half-life of 76 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 7.70 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.0094
6.02***
α

ARCH

Response to squared shocks

0.0774
37.52***
β

GARCH

Volatility persistence

0.9909
581.18***
ν

DF

Student-t tail thickness

7.7007
6.64***

Persistence:

0.991

Half-life:

76 days