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V-Lab

Sonda S.A. GAS-GARCH Student T Volatility Analysis

Volatility prediction for Wednesday, August 5th, 2026

1 Day

24.48%

decreased by 1.95%

1 Week

24.65%

decreased by 1.78%

1 Month

25.22%

decreased by 1.21%

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. GAS-GARCH-T

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

Volatility shocks decay with a half-life of 22 trading days, meaning a shock loses half its impact after approximately 22 days. Returns follow a Student-t distribution with v = 4.19 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.9448
5.53***
α

ARCH

Response to squared shocks

0.0839
19.27***
β

GARCH

Volatility persistence

0.9690
160.85***
ν

DF

Student-t tail thickness

4.1857
7.84***

Persistence:

0.969

Half-life:

22 days