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V-Lab

Lena Lighting SA GJR-GARCH Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

23.19%

decreased by 0.09%

1 Week

23.49%

increased by 0.21%

1 Month

24.58%

increased by 1.30%

Analysis last updated: Sunday, July 26, 2026 at 05:31 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Lena Lighting SA GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jun 6, 2005 to Jul 24, 2026

Model Insight

With persistence 0.990, volatility shocks have a half-life of 69 trading days (~0.3 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

0.0493
10.17***
α

ARCH

Response to squared shocks

0.0308
7.29***
β

GARCH

Volatility persistence

0.9569
287.95***
γ

leverage

Additional response to negative shocks

0.0048
0.92

Persistence:

0.990

Half-life:

69 days