Traders Reprice Brazil Runoff, South Africa Inflation and Ethiopia Risk

Prediction market traders this week heavily favored Flávio Bolsonaro over Lula in Brazil's 25 October runoff, while the probability of a Trump endorsement for Bolsonaro dropped sharply. In South Africa, the chance of 2026 inflation exceeding 5% increased, and Mexican rate-hold odds declined as cut odds rose. Brazilian traders also raised the likelihood of a November Selic cut, and the perceived risk of an Eritrean invasion of Ethiopia by year-end grew.
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Polymarket traders assigned Flávio Bolsonaro an 86.7% probability of winning Brazil’s 25 October runoff, against 12.5% for Lula. Weekly turnover there was US$8.6 million, and the market’s lifetime volume was US$180.3 million. A separate contract on Trump backing Bolsonaro slid to 21.5% from 54.5%, though recent activity was extremely thin.
South African December 2026 inflation above 5.0% climbed to 68.2%. Mexico’s November hold dropped to 74.5%, with a quarter-point cut at 19.7%. Brazil’s November Selic cut reached 86.5%. Eritrea invading Ethiopia by