Brazil’s antitrust regulator, CADE, has opened a formal investigation into Itaú Unibanco. The probe targets alleged collusion with other banks over retail-broker fees. Itaú Unibanco is the largest bank in Brazil and all of Latin America.
The case marks a major escalation in the country’s push to enforce competition in its banking sector. The investigation centers on a specific practice.
Regulators suspect that Itaú and its peers coordinated to fix the fees charged to retail investors for stock brokerage services. Such coordination would violate Brazilian competition law. It would also harm consumers by keeping prices artificially high.
CADE has not yet released details on which other banks are under scrutiny or what evidence triggered the probe. Itaú Unibanco’s sheer size makes the case consequential.
The bank was created in 2008 through the merger of Banco Itaú and Unibanco. It now operates 4,335 branches across Brazil alone. Globally, it counts over 33,000 service points and 55 million customers.
Its parent company, Itaúsa, ranks among Fortune magazine’s top 500 corporations worldwide. The bank is listed on the B3 exchange in São Paulo and on the New York Stock Exchange. Its geographic footprint extends far beyond Brazil.
Itaú maintains offices in Asunción, Buenos Aires, Dubai, Hong Kong, Lisbon, London, Luxembourg, Montevideo, Nassau, New York, Miami, Santiago, Shanghai, Tokyo, and Zürich. Any finding of collusion could have ripple effects across these markets.
International regulators often take cues from CADE’s decisions in major antitrust cases. The bank’s likely defense will be that it did nothing wrong. It may argue that its fee-setting practices were standard and compliant with existing regulations.
But the probe itself signals that CADE views the matter as serious. An investigation of this scale requires significant evidence to have been authorized in the first place.
This is not the first time Brazilian banking giants have faced antitrust scrutiny. The sector is highly concentrated. A few large institutions control the vast majority of deposits, loans, and fee-based services.
Critics argue that this concentration stifles competition and hurts consumers. CADE’s action against Itaú suggests the regulator is willing to take on the biggest players. Retail-broker fees are a sensitive area.
They directly affect individual investors. If banks colluded to keep these fees high, it would mean ordinary Brazilians paid more to trade stocks than they should have.
That would undermine confidence in the capital markets. It would also contradict the government’s stated goal of broadening retail investment participation. The investigation is ongoing.
No timeline for a decision has been announced. Itaú Unibanco has not yet issued a formal public statement on the probe beyond what is standard in such cases.
The bank’s compliance with antitrust regulations is now under a microscope. The outcome could reshape how brokerage fees are set in Brazil for years to come.
