By Brazil Stock Guide – Brazil’s benchmark Ibovespa index surged 3.24% on Monday (23), marking its fifth-largest daily gain since 2021 and triggering a sharp increase in the market value of companies listed on B3.
According to data compiled by Elos Ayta, the combined market capitalization of listed firms rose from R$5.09 trillion on Friday (20) to R$5.24 trillion on Monday (23), adding R$152.5 billion in a single trading session.
The rally was led by large-cap stocks, with a strong concentration in the financial sector. Itaú Unibanco Holding SA (ITUB4 BZ) posted the largest gain, adding R$13.9 billion in market value. BTG Pactual Group (BPAC11 BZ) followed with R$8.5 billion, while Vale SA (VALE3 BZ) increased by R$8.3 billion.
Other notable contributors included Axiá Energia, Banco Bradesco SA (BBDC4 BZ), WEG SA (WEGE3 BZ), B3 SA Brasil Bolsa Balcao (B3SA3 BZ), Petrobras (PETR4 BZ), Localiza Rent a Car SA (RENT3 BZ) and Banco do Brasil SA (BBAS3 BZ).
Among the ten companies with the largest gains in market capitalization, four belong to the banking sector, reinforcing its dominant role during market rebounds. The remaining firms span energy, industrials, commodities and financial services, pointing to a broader-based rally.
The R$152.5 billion increase in a single session exceeds the total market value of Banco do Brasil, estimated at R$136.8 billion, and approaches that of Axiá Energia, valued at R$165.8 billion.
The aggregate valuation of B3-listed companies climbed from R$5.09 trillion to R$5.24 trillion in one day, underscoring the scale of the repricing move driven by renewed risk appetite and capital reallocation toward liquid, index-heavy stocks.
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