Tariffs and Tensions Drive Brazil’s B3 Down as Volatility Rises

Brazil’s B3 closed July 7, 2025, at 139,489.70 points, falling 1.26% from its record high on July 4. Official market data confirms this drop marked the steepest single-day decline since May, ending a short winning streak and snapping investor optimism.

The US dollar rose nearly 1% to R$5.48, reflecting heightened demand for safety as risk appetite faded. Market participants reacted to direct threats from the United States.

President Trump announced a new 10% tariff targeting countries aligned with the BRICS bloc, which includes Brazil. The White House confirmed these tariffs would take effect August 1, unless countries negotiated separate deals.

This news overshadowed the BRICS summit in Rio de Janeiro, where Brazil and other members denounced the use of tariffs as political weapons.

The summit concluded with a joint declaration against unilateral trade measures, but the immediate market impact proved negative for Brazilian assets.

Traders sold off index heavyweights, especially exporters and commodity firms. Vale shares dropped over 1% as iron ore prices weakened in China. Petrobras fell, diverging from a modest Brent crude rally, as investors rotated out of riskier sectors.

Engie led declines after recent gains triggered by a short squeeze reversed. Conversely, merger optimism lifted BRF and Marfrig, as Brazil’s antitrust authority advanced their review process.

Volumes remained robust, matching the recent trend of heavy trading during volatile sessions. No major ETF inflow or outflow data emerged for the day, but recent weeks showed foreign investors reducing exposure as global trade uncertainty increased.

Brazil’s Central Bank kept the Selic rate at 15%, with inflation at 5.18%, above the official target. GDP growth forecasts for 2025 stand at 2.2% to 2.3%, but high rates and a projected fiscal deficit of R$104 billion continue to weigh on sentiment.

The service sector’s decline and persistent debt levels further limit optimism. Technical analysis of the daily chart reveals that the Ibovespa failed to hold above recent highs.

The price broke below key short-term moving averages, signaling a loss of momentum. The MACD shows a weakening trend, with a potential bearish crossover, while the RSI has retreated from overbought territory and now sits below 60.

Bollinger Bands indicate increased volatility, with the price moving toward the lower band. Support levels around 138,700 and resistance near 141,200 remain critical.

The four-hour chart confirms the loss of short-term momentum, as sellers dominated after the tariff news. Global markets set the tone for the day. Wall Street indices lost about 1% as tariff fears spread.

Asian markets dropped on renewed trade war concerns, with the Nikkei down 0.56% and the Hang Seng off 0.12%. European stocks, however, closed slightly higher, showing some resilience.

Brazil’s market story on July 7 centers on how trade policy and macroeconomic risks, not sentiment or speculation, drove a sharp and broad-based selloff. The technical setup now suggests caution, as both domestic and external pressures remain unresolved.

LatAm Markets: Live Signals → — real-time movers, turnover leaders and FX across Latin America.