Key Highlights

  • iShares MSCI Brazil ETF (NYSEARCA:EWZ) fell 19.82% at the October 26, 2026 close, one of the largest one-day ETF drops on record by one account, as Brazil sold off after Luiz Inacio Lula da Silva won the runoff with 51.79%.
  • Brazil's Ibovespa crashed 13.88% to 176,608.23, its worst day in six years, and trading hit the B3 circuit breaker for the first time since March 2020.
  • The real fell 8.21% to 5.4027 per dollar, its biggest daily drop since 1999, and Brazil's five-year credit default swap rose 26% to 151.67 basis points.
  • Quotes for iShares MSCI Brazil ETF (NYSEARCA:EWZ) vary by timing, from 19.82% at the close to about 21% in headlines and about 26% premarket, and Jair Bolsonaro was reported to have refused to concede.

What Happened in Brazil

Lula won the presidential runoff with 51.79% of the vote in a result described as a surprise, and markets reacted on October 26, 2026. Brazilian markets reacted immediately: the Ibovespa fell 13.88% to 176,608.23, and the B3 exchange triggered its first circuit breaker since March 2020. The real fell 8.21% to 5.4027 per dollar, the biggest daily drop since 1999. Brazil's five-year credit default swap spread rose 26% to 151.67 basis points, which means the cost of insuring Brazilian debt against default increased sharply. Bolsonaro was reported to have refused to concede, which adds political uncertainty. These are the figures that investors in Brazilian assets will compare against in coming sessions.

How a Brazil ETF Magnifies the Move

iShares MSCI Brazil ETF (NYSEARCA:EWZ) holds Brazilian stocks priced in reais but trades in US dollars, so a US investor's return combines the local equity move and the currency move. When the Ibovespa fell 13.88% and the real fell 8.21% against the dollar in the same session, the two effects compounded, which helps explain why the fund fell more than the local index. The 19.82% figure is the closing reading. Other quotes of 21% and 26% reflect different timing, so any single figure should be treated as approximate. Brazilian ADRs also fell: XP lost 48.36%, Nu Holdings 16.95% and Petrobras 13.99%. A holder of the fund therefore faces equity risk and currency risk together.

Risks and What to Watch

Policy risk is the central issue, because investors are pricing what a new government may do on spending, state-owned companies and the currency. Watch whether the real stabilises, whether credit default swaps keep widening, and whether Brazilian shares keep falling in the October 27, 2026 session. Global events add noise: the Federal Reserve meets on October 27 and 28, and Treasury yields near 4.99% reduce appetite for emerging markets. A one-day record fall is not a forecast of what comes next, and rebounds after panic sales are common. Nothing here is investment advice. Investors should also remember that the first trading session after the result absorbed all of the news at once.

Where Things Stand

The answer is that iShares MSCI Brazil ETF (NYSEARCA:EWZ) fell 19.82% because Lula's surprise runoff win triggered policy fears, a 13.88% Ibovespa crash and a currency drop of 8.21%, and the dollar-based fund absorbed both effects at once. The close is the best reading, with other quotes at about 21% and 26%. Policy signals from the incoming government, the real and Brazilian credit spreads are the next catalysts, alongside the Federal Reserve decision on October 28, 2026. Credit default swaps and the currency are the cleanest gauges of whether fear is easing.