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V-Lab

Petrolia Se GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, August 26th, 2026

1 Day

42.72%

decreased by 0.82%

1 Week

43.91%

increased by 0.37%

1 Month

48.28%

increased by 4.74%

Analysis last updated: Wednesday, August 26, 2026 at 09:27 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Petrolia Se GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 11, 1999 to Aug 21, 2026

Model Insight

With persistence 0.997, volatility shocks have a half-life of 241 trading days (~1.0 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.2252
18.61***
α

ARCH

Response to squared shocks

0.0644
18.55***
β

GARCH

Volatility persistence

0.9273
461.80***
γ

leverage

Additional response to negative shocks

0.0110
1.66*

Persistence:

0.997

Half-life:

241 days