V-Lab
Banco do Brasil SA GJR-GARCH Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
31.27%
decreased by 0.16%
1 Week
31.91%
increased by 0.48%
1 Month
34.04%
increased by 2.61%
Analysis last updated: Wednesday, August 5, 2026 at 08:40 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 17, 1992 to Jul 31, 2026Model Insight
Volatility shocks decay with a half-life of 34 trading days, meaning a shock loses half its impact after approximately 34 days.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1596 | 4.31*** |
α ARCH Response to squared shocks | 0.0567 | 10.91*** |
β GARCH Volatility persistence | 0.9286 | 130.06*** |
γ leverage Additional response to negative shocks | -0.0110 | -0.77 |
Persistence:
0.980
Half-life:
34 days
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