Will Partido Social Democrático (PSD) win the most seats in the next Brazilian Senate election?

The PSD is priced at a severe discount (4¢) despite being a major Brazilian center-right party, suggesting strong market skepticism about its Senate performance—likely reflecting expectations that left-wing parties (PT) or other competitors will dominate the 2026 election. The extreme implied yield of 5132% on the Yes side combined with massive realized volatility (3121%) and a high vol ratio (4.46) indicates this is a highly speculative position with substantial pricing uncertainty rather than fundamental conviction. With 171 days to expiry, moderate liquidity ($9.3M open interest), and a recent sharp 2¢ price decline over seven days, this appears to be a contrarian bet that has lost momentum, though the cliff risk index of 24 suggests meaningful tail risk around resolution.

Resolution rules

The next federal Senate election is scheduled to take place in Brazil on October 4, 2026, in which two-thirds of the Senate’s 81 seats will be contested. This market will resolve according to the political party that wins the greatest number of seats in the next Brazilian Senate election. Only seats contested in the next Brazilian Senate election will be considered. If the result of this election isn't known definitively by June 30, 2027, 11:59 PM ET, the market will resolve to "Other". This market will resolve based on the result of the election, as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the Brazilian government, specifically the Superior Electoral Court (Tribunal Superior Eleitoral, TSE) (e.g., www.tse.jus.br/eleicoes/resultados-eleicoes).

Indicators

Regime

Trade