Why is Ambev stock plummeting today?

Ambev SA ADR shares suffered a sharp -17.9% drop in early trading, falling to $2.71, following a surprise win by President Luiz Inácio Lula da Silva in Brazil's presidential runoff election. U.S.-listed Brazilian stocks experienced a widespread sell-off after weeks of expectations of a Bolsonaro victory. The Brazilian real currency suffered a significant 10% drop overnight, leading to a depreciation of around R$5.56 per dollar.

This sharp currency decline directly impacted Ambev's predominantly Brazilian-denominated revenues. Additionally, a Brazil-focused exchange-traded fund dropped nearly 15% in Asian trading, reflecting the market's reaction. Financial analysts, including Goldman Sachs, warned of a potential 10% real depreciation, a 200-basis-point rise in long-term bond yields, and a 15% decline in Brazilian equities.

This combination of currency shock, fiscal outlook revision, and the upcoming Q3 2026 earnings release on October 29 created a perfect storm for Ambev's disappointing performance.