Dollar falls to R$5.10, stocks surge on Trump's Iran deal announcement

The Brazilian real strengthened sharply on Thursday as global markets responded to news that Donald Trump had reached an agreement with Iran and was canceling related sanctions. The dollar, which had been under pressure all week, closed at 5.10 reais—a significant move in a currency that had been hovering near 5.30 just days earlier. The shift rippled through São Paulo's stock exchange with visible force. The Ibovespa, Brazil's main equity index, jumped nearly 2,000 points in the span of minutes after Trump's announcement, surging from 168,541 to 170,435 points before settling at 171,497 points by session's end—a gain of 1.71% on the day.

The market's relief was rooted in a simple calculation: fewer geopolitical tensions meant less pressure on global oil supplies, which in turn meant less reason for central banks to keep interest rates at punishing levels. Brent crude, the international benchmark, fell 2.92% to $90.38 a barrel. West Texas Intermediate dropped 2.58% to $87.71. For emerging markets like Brazil, which depend on capital inflows from wealthier nations, lower oil prices and the prospect of stable—or even declining—rates abroad would normally be welcome news.

But the optimism was incomplete. Overseas, the calculus remained complicated. The U.S. consumer price index for May had come in hotter than expected, marking the highest reading in three years. That single data point shifted the betting odds on the Federal Reserve's next move. Investors who had been positioning for interest rate cuts at the Fed's June meeting suddenly pulled back. The central bank had held its benchmark rate steady at 3.5% to 3.75% annually for three consecutive meetings, and now the market was pricing in a fourth pause. Meanwhile, the European Central Bank had just raised its deposit rate from 2% to 2.25% annually—the first increase in nearly three years—citing inflation pressures stemming from energy price shocks tied to the U.S. and Israeli conflict with Iran.

These moves by the world's two largest central banks created a paradox for Brazil. Higher rates in America and Europe pull capital away from emerging markets, making the real weaker and stocks less attractive to foreign investors, even as geopolitical risk recedes. Paulo Gala, an economist at FGV-SP, noted that elevated rates abroad directly constrain Brazil's own monetary policy options by reducing the flow of money into Brazilian assets. The country's own central bank, the Banco Central do Brasil, was set to meet on June 16 and 17 to decide on the Selic rate, currently at 14.50% annually. Just hours before Trump's announcement, 74% of investors trading Copom futures contracts on the B3 exchange had been betting on a third consecutive quarter-point rate cut. By afternoon, that figure had collapsed to 30%. The proportion expecting the central bank to hold rates steady had jumped from 24% to 70%.

Bruno Fratelli, an economist at Journey Capital, argued that Brazil's economic fundamentals no longer supported further cuts anyway. A pause in June would be the prudent technical choice, he said. The question now was whether the central bank would agree, or whether it would feel compelled to keep cutting in the face of external headwinds.

There were some bright spots in the domestic picture. Brazil's services sector, which had contracted 1.1% in March, rebounded with 1.2% growth in April on a seasonally adjusted basis. Over the past year, services output had grown 2.9%, and compared to April 2025, the sector was up 1.9%—marking the 25th consecutive month of year-over-year gains. Claudia Moreno, an economist at C6 Bank, said the resilience of services, bolstered by government credit incentives and a tight labor market, should help sustain economic activity through 2026.

Yet even this strength faced headwinds from abroad. Gabriel Mollo, an analyst at Daycoval Corretora, pointed out that Elon Musk's SpaceX was preparing an initial public offering valued at $1.75 trillion—potentially the largest in American history, expected to raise more than $75 billion. That kind of capital mobilization would inevitably pull investment dollars away from emerging markets. Foreign capital flows into Brazil had already weakened in recent weeks, and a SpaceX IPO would only accelerate that reallocation. The day's gains in the real and the stock market, in other words, might prove temporary—a brief relief before the deeper currents of global capital flows reasserted themselves.