V-Lab
US Dollar to Brazilian Real MF2-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 29th, 2026
1 Day
8.56%
1 Week
8.79%
1 Month
10.05%
Analysis last updated: Monday, September 28, 2026 at 07:10 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 22, 1992 to Sep 25, 2026Model Insight
This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.
MF2-GARCH Model
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| Param | Value | t-stat |
|---|---|---|
| mwindow | 21 | |
| αARCH | 0.1439 | 8.30*** |
| βGARCH | 0.7559 | 24.56*** |
| γleverage | -0.1171 | -6.30*** |
| λ₁tau intercept | 0.0080 | 1.01 |
| λ₂forecast adj. | 0.0631 | 4.87*** |
| λ₃tau persistence | 0.9234 | 41.89*** |
0.841
Persistence4d
Half-lifeMF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 21 | |
α ARCH Response to squared shocks | 0.1439 | 8.30*** |
β GARCH Volatility persistence | 0.7559 | 24.56*** |
γ leverage Additional response to negative shocks | -0.1171 | -6.30*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0080 | 1.01 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0631 | 4.87*** |
λ₃ tau persistence Long-term factor persistence | 0.9234 | 41.89*** |
Persistence:
0.841
Half-life:
4 days
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