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V-Lab

Sonda S.A. GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, August 5th, 2026

1 Day

28.66%

decreased by 1.30%

1 Week

28.58%

decreased by 1.38%

1 Month

28.31%

decreased by 1.65%

Analysis last updated: Wednesday, August 5, 2026 at 06:03 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Sonda S.A. GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 9, 2006 to Jul 31, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 203% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0932
15.83***
α

ARCH

Response to squared shocks

0.0396
13.40***
β

GARCH

Volatility persistence

0.8887
250.41***
γ

leverage

Additional response to negative shocks

0.0803
7.65***

Persistence:

0.968

Half-life:

22 days