Skip to main content
V-Lab

DAX Volatility Index GAS-GARCH Student T Volatility Analysis

Volatility prediction for Friday, August 21st, 2026

1 Day

74.19%

increased by 0.40%

1 Week

75.08%

increased by 1.29%

1 Month

78.01%

increased by 4.22%

Analysis last updated: Friday, August 21, 2026 at 08:17 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of DAX Volatility Index GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1992 to Apr 30, 2026

Model Insight

Volatility shocks decay with a half-life of 27 trading days, meaning a shock loses half its impact after approximately 27 days. Returns follow a Student-t distribution with v = 5.12 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

32.3300
8.24***
α

ARCH

Response to squared shocks

0.0716
29.81***
β

GARCH

Volatility persistence

0.9743
284.87***
ν

DF

Student-t tail thickness

5.1180
7.35***

Persistence:

0.974

Half-life:

27 days