Skip to main content
V-Lab

Dow Jones Utilities Average GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, August 25th, 2026

1 Day

15.46%

increased by 0.89%

1 Week

15.50%

increased by 0.93%

1 Month

15.65%

increased by 1.08%

Analysis last updated: Tuesday, August 25, 2026 at 12:03 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Dow Jones Utilities Average GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Aug 21, 2026

Model Insight

Volatility shocks decay with a half-life of 56 trading days, meaning a shock loses half its impact after approximately 56 days. Returns follow a Student-t distribution with v = 9.45 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

1.1597
9.86***
α

ARCH

Response to squared shocks

0.0788
35.87***
β

GARCH

Volatility persistence

0.9877
777.73***
ν

DF

Student-t tail thickness

9.4459
4.91***

Persistence:

0.988

Half-life:

56 days