B3 confirmed the exclusion of IRB Brasil and special-class shares of Axia, Cyrela, and Localiza from the Ibovespa index [1].

These changes affect the composition of Brazil's primary stock-market benchmark, influencing how institutional investors and index funds track the national economy. The removals reflect B3's regular review process to ensure all listed companies meet specific eligibility criteria, including liquidity and free-float requirements [1], [2].

According to the second preview of the theoretical portfolio, the index will add zero new stocks [1], [4]. The new composition is set to be in effect from May to August 2026 [1]. The current portfolio consists of 79 papers representing 76 companies [4].

B3 announced these updates on April 16, 2024 [1]. While some reports indicate the portfolio entered into force on Monday, May 4, 2024 [4], other sources specify the effective period as the May to August 2026 window [1].

"B3 manteve a exclusão das ações do IRB(Re) na segunda prévia para o Ibovespa que irá vigorar a partir de maio," B3 said in a press release [1].

The exchange also confirmed the removal of special-class shares for three other firms. "A B3 manteve a exclusão das ações do IRB e das ações de classes especiais da Axia, Cyrela e Localiza," B3 said [3].

This periodic rebalancing ensures the index remains a representative gauge of the Brazilian market's most liquid and significant assets. By removing stocks that no longer meet the required standards, B3 maintains the index's integrity for global and domestic traders.

The new composition is set to be in effect from May to August 2026.

The removal of these specific shares without any new additions suggests a tightening of liquidity or eligibility standards within the Brazilian market. For investors, this means the Ibovespa is becoming more concentrated among its remaining 76 companies, potentially increasing the volatility impact of the largest remaining constituents.