Stock Markets June 3, 2026 11:39 AM

Latin American Markets Slide as Iran Tensions and U.S. Tariff Threat Weigh on Risk Appetite

Regional equities and currencies retreat after geopolitical concerns and a proposed 25% U.S. tariff on many Brazilian imports

By Priya Menon

Latin American stocks and currencies declined as investor risk appetite retreated amid fears of escalating conflict in Iran and reaction to a U.S. proposal for a 25% punitive tariff on numerous imports from Brazil. Major regional benchmarks and national markets from Brazil to Argentina fell, while policymakers and trade officials exchanged sharp public statements.

Latin American Markets Slide as Iran Tensions and U.S. Tariff Threat Weigh on Risk Appetite

Key Points

  • MSCI Latin American equities index fell 1.6% as risk appetite declined.
  • Brazilian stocks led regional losses, dropping 1.8% after a U.S. proposal for a 25% tariff on many Brazilian imports; comments from U.S. trade official Jamieson Greer and President Luiz Inacio Lula da Silva followed.
  • National moves included Mexico equities -0.1% with the peso down 0.2%, Argentina’s Merval -1.0% with the peso down 0.3%, and Colombia equities -1.2% after prior gains tied to election developments.

Markets across Latin America moved lower on Wednesday as a shift away from risk assets took hold, driven by renewed concerns over possible escalation in Iran and fresh trade tensions with the United States.

The MSCI index that tracks Latin American equities fell 1.6%, while a regional currency index eased by 0.4% as traders favored safer assets.

Brazilian equities were among the weakest in the region, sliding 1.8% after Washington proposed a new 25% punitive tariff covering many imports from Brazil. U.S. trade chief Jamieson Greer characterized the tariff as a response to what he called unfair trade practices, pointing to matters ranging from digital trade to illegal deforestation.

Brazil’s president Luiz Inacio Lula da Silva expressed surprise at the move and said the country "could not accept the treatment" it had received from the United States.

Mexico’s equity market fell more modestly, down 0.1%, while the peso lost 0.2% against a stronger U.S. dollar. In Argentina, the Merval index dropped 1% and the peso slipped 0.3%.

Colombian equities declined 1.2%, registering their first decline of the week. Earlier in the week, risk appetite in Colombia had been bolstered by the strong showing of right-wing candidate Abelardo de la Espriella in the first round of the presidential election, a development that had supported local assets.

Overall, the combination of geopolitical concerns tied to Iran and the specter of higher U.S. tariffs on Brazilian goods pushed regional investors toward caution, weighing on both stock indexes and regional currencies.


Market data referenced: MSCI Latin America -1.6%; regional currency index -0.4%; Brazilian equities -1.8%; Mexico -0.1% (equities); MXN -0.2% vs USD; Argentina Merval -1.0%; Argentine peso -0.3%; Colombia -1.2%.

Context notes: Officials and political leaders made public statements reacting to the tariff proposal, while political developments in Colombia earlier in the week had supported risk assets before the midweek pullback.

Risks

  • Escalating conflict in Iran - poses downside risk to regional risk assets and could further depress equities and currencies.
  • Potential implementation of a 25% U.S. punitive tariff on many Brazilian imports - creates trade and policy uncertainty impacting Brazilian exporters and broader market sentiment.
  • Political volatility in Colombia - election dynamics that previously boosted risk appetite may reverse, contributing to equity and currency weakness.

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