Flávio Bolsonaro Leads Brazil Election Odds as Bullish Stock Bets Surge

Key Facts

1Senator Flávio Bolsonaro overtook President Lula da Silva on Polymarket, leading 52.8% to 44%.

2A BTG Pactual/Nexus survey showed Bolsonaro edging ahead for the first time amid a Supreme Court scandal.

3Analysts noted a sharp surge in call option open interest for the iShares MSCI Brazil ETF (EWZ).

In a move reflecting a potential shift in the political landscape of Latin America's largest economy, Polymarket data shows Senator Flávio Bolsonaro leading President Lula da Silva with 52.8% odds against 44%. This shift follows a BTG Pactual/Nexus survey that placed Bolsonaro ahead for the first time, amid a deepening Supreme Court scandal in Brazil. According to reports, analysts have identified a sharp surge in call option open interest for the iShares MSCI Brazil ETF (EWZ), signaling growing investor optimism regarding the upcoming October election outcomes.

Regarding market performance, the iShares MSCI Brazil ETF (EWZ) stood at $38.59 at the close of September 10, 2026, fluctuating between a day low of $37.61 and a high of $38.84. Per market data, this price action coincides with heavy options activity, as analysts suggest a right-wing political shift is often viewed as pro-business. Recent economic data from September 4, 2026, also showed Brazil's Balance of Trade reaching $7.39 billion, exceeding the forecasted $7.14 billion and supporting the broader regional economic narrative.

Looking ahead, traders are monitoring EWZ at its current level of $38.59 (close September 10, 2026) for signs of sustained bullish momentum. With no major Brazilian economic events listed in the immediate upcoming calendar, political developments and polling data will remain the primary catalysts for Brazilian assets. Investors will likely focus on whether the surge in call options translates into a sustained breakout as the October election approaches.