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V-Lab

Dow Jones Transportation Average GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, August 26th, 2026

1 Day

17.25%

decreased by 0.55%

1 Week

17.51%

decreased by 0.29%

1 Month

18.40%

increased by 0.60%

Analysis last updated: Wednesday, August 26, 2026 at 12:04 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Dow Jones Transportation Average GJR-GARCH

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

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 255% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0396
19.54***
α

ARCH

Response to squared shocks

0.0326
11.15***
β

GARCH

Volatility persistence

0.9076
364.79***
γ

leverage

Additional response to negative shocks

0.0831
13.73***

Persistence:

0.982

Half-life:

38 days