Base Exchange, a challenger backed by Abu Dhabi's Mubadala, has delayed its entry into Brazil's stock market, saying it now expects to launch in the second half of 2027 rather than as early as the second half of 2025. The company, which aims to compete with Brazil's dominant exchange operator B3, said it will begin functional testing in early 2027 as part of the approval process.
CEO Francisco Gurgel said Brazil's central bank authorized the project last month, a key step that allows the exchange to move forward with testing. But building an exchange is slow work. Beyond the trading screen, it requires behind-the-scenes systems for clearing and settlement, market surveillance, and broker connectivity—all of which must be tested and approved before any real trades can happen.
What Base plans to offer
When it goes live, Base intends to trade stocks, real estate funds, and exchange-traded funds (ETFs). It aims to offer trading in all shares already listed on B3, but it won't initially host primary listings. That means companies would still list and raise money on the incumbent exchange, while Base would focus on secondary trading—the buying and selling of existing shares.
That focus on secondary trading is a notable limitation. Primary listings are often a source of new volume and attention for an exchange, and without them, Base will have to attract traders based on execution quality and cost alone.
The pitch: lower fees, more competition
The core argument Base makes to investors is simple: more competition can lower trading fees. In many markets, exchanges have faced pressure to cut costs when a rival emerges, and Brazil's trading fees have been a point of contention for years.
B3, for its part, counters that it already prices to stay competitive. It also notes that foreign investors make up about 50% of Brazil's equity volumes, making them central to any market-share shift. That means any new exchange would need to win over international players, who may be cautious about switching venues.
Why the delay matters
For markets, the 2027 timeline pushes out the first real test of B3's trading-fee pricing. Exchange competition only bites when orders actually migrate. Liquidity reinforces itself: traders gravitate to the venue with the deepest order book and the tightest bid-ask spread. That's a high bar for a late-starting venue focused on secondary trading, especially one that won't yet offer primary listings.
To gain traction, Base may have to lure brokers and high-volume traders with incentives like fee discounts or rebates before it can reliably match B3's execution. That kind of strategy can be expensive and takes time to build momentum.
The immediate takeaway is that any sustained pressure on B3's per-trade economics—and any broad-based drop in costs for the biggest price-setters, including foreign investors—is pushed out. If Base can eventually pull meaningful flow once testing starts in early 2027, B3's take rate could still come under pressure. But 2027 is now the earliest point that story can be proven at scale.
What it means for investors
For everyday investors in Brazil, the delay means no immediate change in how they trade. B3 remains the only game in town for now, and its fee structure is unlikely to shift until a credible competitor actually launches.
For those watching the broader trend of exchange competition, this is a reminder that building a new trading venue is a long, complex process. It's not just about putting up a screen and matching orders; it's about building trust, connectivity, and enough liquidity to make traders want to switch.
Base's progress will be worth watching, but for now, the status quo in Brazil's equity market looks set to continue for at least another couple of years.
