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V-Lab

S&P GSCI Unleaded Gasoline Spot Index GARCH Volatility Analysis

Volatility prediction for Monday, August 17th, 2026

1 Day

37.89%

decreased by 0.98%

1 Week

37.87%

decreased by 1.00%

1 Month

37.78%

decreased by 1.09%

Analysis last updated: Friday, August 14, 2026 at 11:06 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P GSCI Unleaded Gasoline Spot Index GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Aug 14, 2026

Model Insight

Volatility shocks decay with a half-life of 63 trading days, meaning a shock loses half its impact after approximately 63 days.

σ

GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0591
23.53***
α

ARCH

Response to squared shocks

0.0682
32.95***
β

GARCH

Volatility persistence

0.9208
438.26***

Persistence:

0.989

Half-life:

63 days