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V-Lab
V-Lab

Petrolia Se GJR-GARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

40.01%

decreased by 0.29%

1 Week

41.26%

increased by 0.96%

1 Month

45.85%

increased by 5.55%

Analysis last updated: Friday, September 11, 2026 at 08:48 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

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 Sep 4, 2026

Model Insight

With persistence 0.997, volatility shocks have a half-life of 264 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

High persistence: persistence 0.997, shock half-life ~264 days
ParamValuet-stat
ωconst0.2190
4.62***
αARCH0.0640
4.64***
βGARCH0.9277
116.09***
γleverage0.0113
0.43

0.997

Persistence

264d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.2190
4.62***
α

ARCH

Response to squared shocks

0.0640
4.64***
β

GARCH

Volatility persistence

0.9277
116.09***
γ

leverage

Additional response to negative shocks

0.0113
0.43

Persistence:

0.997

Half-life:

264 days