B3

B3 is the Brazilian stock exchange, the place where shares, derivatives, and other listed instruments are traded and cleared. By our assessment, its real strength is that it concentrates the machinery of Brazilian capital markets in one system, so brokers, companies, and investors all use the same venue. The downside is that an exchange is never friendly in the casual sense: it is dense, regulated, and shaped by rules, fees, and market volatility. In practice B3 is less a building than a market infrastructure layer, and most people touch it only through their broker or a market app. It sits at the center of formal investing in Brazil, alongside global exchanges that do similar work with different rules and scale. For anyone who needs access to Brazilian equities or derivatives, it matters; for everyone else, it is just the name behind a financial plumbing job.