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V-Lab

S&P GSCI Unleaded Gasoline Spot Index GJR-GARCH Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

34.13%

decreased by 0.84%

1 Week

34.17%

decreased by 0.80%

1 Month

34.35%

decreased by 0.62%

Analysis last updated: Friday, August 21, 2026 at 11:20 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P GSCI Unleaded Gasoline Spot Index 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 modest leverage effect: negative returns increase next-day volatility 32% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0585
21.47***
α

ARCH

Response to squared shocks

0.0577
16.38***
β

GARCH

Volatility persistence

0.9219
438.81***
γ

leverage

Additional response to negative shocks

0.0183
3.46***

Persistence:

0.989

Half-life:

61 days