Ibovespa Falls 0.8% on Oil Drop, Fed and Copom Decisions Loom

Brazil's Ibovespa index declined 0.81% to 184,987 points, pressured by Petrobras shares following lower oil prices, while investors await Fed and Copom rate decisions. The market also weighs the STF crisis and its potential impact on October elections. The drop follows a prior gain, indicating a reversal driven by external commodity weakness and domestic political uncertainty.