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
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 9, 2006 to Jul 31, 2026Model 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
| Parameter | Value | t-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
Other GJR-GARCH Analyses on International Equities