V-Lab
CBOE Brazil ETF Volatility Index GARCH Volatility Analysis
Volatility prediction for Friday, August 7th, 2026
1 Day
68.06%
increased by 1.77%
1 Week
72.08%
increased by 5.79%
1 Month
78.67%
increased by 12.38%
Analysis last updated: Friday, August 7, 2026 at 08:39 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 16, 2011 to Apr 4, 2025Model Insight
Volatility shocks decay with a half-life of 5 trading days, meaning a shock loses half its impact after approximately 5 days.
σ
GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.8610 | 19.39*** |
α ARCH Response to squared shocks | 0.1434 | 16.81*** |
β GARCH Volatility persistence | 0.7164 | 64.19*** |
Persistence:
0.860
Half-life:
5 days
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