Brazil’s main stock exchange, B3, is launching a regulated, bitcoin-linked twist on prediction markets — but only for the ultra-wealthy.
What’s launching
- On April 27 B3 will roll out six “Event Contracts”: derivatives that let investors bet on the probability of future outcomes tied to bitcoin, the U.S. dollar and the Ibovespa equity index.
- Contracts cover mini futures and spot-equivalent outcomes, are cash-settled (no delivery of underlying assets), and pay fixed amounts at settlement. Each contract trades for up to 100 reals (~$19), with price reflecting the market’s estimated probability of the event.
Who can trade
- These products are aimed at professional investors. Only clients with more than 10 million reals (~$1.9 million) in assets or those with CVM certification will be allowed to participate.
- B3 says the Event Contracts are regulated by Brazil’s securities regulator, the Comissão de Valores Mobiliários (CVM).
Why it matters for crypto markets
- For the first time in Brazil, a federally regulated exchange is offering prediction-market-style products that explicitly include bitcoin as an underlying reference. That creates a regulated venue for probability-based crypto exposure — albeit a restricted one initially.
- B3 frames the launch as part of a broader modernization push in derivatives trading. The exchange has also disclosed plans to launch a tokenization platform and a stablecoin later this year, developments that could further intersect with crypto markets.
Competitive and regulatory context
- B3’s move arrives as domestic prediction platforms such as Prévias and Palpitada operate in a regulatory gray area, and as U.S. players expand into Brazil — Kalshi recently partnered with XP International, the country’s largest brokerage.
- Globally, prediction markets are booming: a Dune dashboard shows notional volumes approaching $160 billion and over 3 million unique users, with Kalshi and Polymarket accounting for most activity. Intercontinental Exchange (owner of the NYSE) has also increased its stake in Polymarket to bring total commitments near $2 billion.
Regulatory uncertainties remain
- Even with CVM oversight of these new contracts, legal experts say it’s still unclear in Brazil whether prediction markets should ultimately be regulated by the CVM, the Central Bank, or the Ministry of Finance. That unresolved jurisdictional question mirrors ongoing debates in other jurisdictions as prediction markets scale.
Bottom line
B3’s Event Contracts represent a regulated, institutional-grade entree for price-probability trading that includes bitcoin — a sign of growing institutional interest in crypto-linked derivatives. But high wealth thresholds and unsettled regulatory lines mean wider retail access and clearer oversight are still some way off.
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