Banco do Brasil SA GJR-GARCH Volatility Analysis
Volatility prediction for Thursday, October 29th, 2026
1 Day
116.46%
decreased by 3.61%
1 Week
114.49%
decreased by 5.58%
1 Month
107.26%
decreased by 12.81%
Analysis last updated: Friday, October 30, 2026 at 12:45 AM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 17, 1992 to Oct 23, 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
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Shock decay: Shocks decay with a 34-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1602 | 1.09 |
| αARCH | 0.0569 | 2.73*** |
| βGARCH | 0.9286 | 32.74*** |
| γleverage | -0.0113 | -0.20 |
0.980
Persistence34d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1602 | 1.09 |
α ARCH Response to squared shocks | 0.0569 | 2.73*** |
β GARCH Volatility persistence | 0.9286 | 32.74*** |
γ leverage Additional response to negative shocks | -0.0113 | -0.20 |
Persistence:
0.980
Half-life:
34 days
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