Key Highlights

  • The iShares MSCI Brazil ETF (NYSEARCA:EWZ) rose about 12.5 percent to USD 42.98 on October 5, 2026, after Flavio Bolsonaro finished first in Brazil's October 4 presidential vote.
  • Bolsonaro won about 47 percent against about 45 percent for President Lula, forcing an October 25 runoff, while published data show the Ibovespa up 7.70 percent to a record 206,912.
  • The real strengthened about 4.12 percent to 4.9982 per US dollar, so EWZ (NYSEARCA:EWZ) holders gained from both Brazilian share prices and the currency in one session.
  • Banks led the move, with Bradesco preferred up 13.57 percent locally, while exporters Embraer and Suzano fell locally, and Vale slipped 0.97 percent in Brazil, as the stronger real cut dollar revenue.

A Polling Miss Reprices Brazil

Flavio Bolsonaro, a senator, took about 47 percent of the first-round vote on October 4, 2026, against about 45 percent for Lula, and neither passed 50 percent, so the two meet in a runoff on October 25. Published pre-election polls had mostly favored Lula, for example a Datafolha survey with Lula at 42 percent and Bolsonaro at 38 percent. The iShares MSCI Brazil ETF (NYSEARCA:EWZ) closed up about 12.5 percent at USD 42.98 on October 5. The Ibovespa gained 7.70 percent, its biggest one-day rise since March 24, 2020, and Brazilian rate futures fell toward about 12 percent across the curve. The move reflects a repricing of the odds of a change of government in 2027, not a company announcement.

Why a Brazil ETF Moves So Much

An ETF such as the iShares MSCI Brazil ETF (NYSEARCA:EWZ) holds Brazilian shares priced in reais but trades in US dollars, so a rally in stocks and a stronger real compound. Simple arithmetic on the published figures shows the real's roughly 4 percent gain explains a meaningful slice of the 12.5 percent dollar return. Investors favored Bolsonaro's reported platform of a constitutional spending cap, fewer federal ministries, falling from 38 to about 23, and privatizations, which they read as lower fiscal risk. Banks gained the most because they are sensitive to interest rates and fiscal credibility. Exporters lagged because a stronger real reduces the reais value of dollar sales.

Runoff Risks and What to Watch

The main risk is that a one-day repricing built on a polling surprise can reverse. Runoff surveys taken before the vote showed a dead heat, with AtlasIntel at 47.7 percent for Bolsonaro and 47.6 percent for Lula. Delivering a spending cap needs a congressional supermajority that Bolsonaro has not yet assembled, and the centrist Centrao bloc stayed neutral. A reported 25 percent US tariff on most Brazilian exports, in effect since July 22, is unresolved by either candidate. The runoff on October 25 is the next catalyst, with the FOMC minutes on October 7 at 2:00 p.m. ET shaping global risk appetite, and iShares MSCI Brazil ETF (NYSEARCA:EWZ) liquidity can thin around binary votes.

Where Things Stand

A Brazil equity ETF jumped about 12.5 percent because investors repriced the election, and the fund is the iShares MSCI Brazil ETF (NYSEARCA:EWZ). The rally reflects a first-round result that beat polls, not new corporate earnings, and it leaves Brazilian assets priced for a reform-friendly outcome. With the runoff on October 25 and polls showing a near tie, the gain can extend or fade quickly, so the fund now carries both political and currency risk.