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V-Lab

Sonda S.A. GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, July 14th, 2026

1 Day

23.53%

decreased by 0.91%

1 Week

23.78%

decreased by 0.66%

1 Month

24.56%

increased by 0.12%

Analysis last updated: Tuesday, July 14, 2026 at 05:58 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 10, 2026

Model Insight

This asset exhibits a strong leverage effect: negative returns increase next-day volatility 208% more than equivalent positive returns.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0939
15.87***
α

ARCH

Response to squared shocks

0.0396
13.30***
β

GARCH

Volatility persistence

0.8875
248.66***
γ

leverage

Additional response to negative shocks

0.0822
7.83***

Persistence:

0.968

Half-life:

21 days