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V-Lab

Lena Lighting SA GJR-GARCH Volatility Analysis

Volatility prediction for Monday, August 24th, 2026

1 Day

22.22%

decreased by 0.21%

1 Week

22.53%

increased by 0.10%

1 Month

23.68%

increased by 1.25%

Analysis last updated: Sunday, August 23, 2026 at 01:11 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 Aug 21, 2026

Model Insight

With persistence 0.991, volatility shocks have a half-life of 73 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

0.0469
10.02***
α

ARCH

Response to squared shocks

0.0305
7.30***
β

GARCH

Volatility persistence

0.9578
294.26***
γ

leverage

Additional response to negative shocks

0.0044
0.87

Persistence:

0.991

Half-life:

73 days