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Dow Jones Utilities Average GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, July 28th, 2026

1 Day

16.05%

increased by 0.92%

1 Week

16.08%

increased by 0.95%

1 Month

16.18%

increased by 1.05%

Analysis last updated: Tuesday, July 28, 2026 at 12:14 AM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

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10Y ·

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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 Jul 24, 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 = 9.48 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

1.1619
9.94***
α

ARCH

Response to squared shocks

0.0792
36.00***
β

GARCH

Volatility persistence

0.9877
781.41***
ν

DF

Student-t tail thickness

9.4849
4.91***

Persistence:

0.988

Half-life:

56 days