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Investing.com - Brazil’s stock exchange released today the first official preview of the upcoming Bovespa index rebalancing scheduled for Monday, September 1, 2025. According to the preview, homebuilder Cury (BVMF:CURY3) is expected to be added to the benchmark while sugar and ethanol producer São Martinho (BVMF:SMTO3) faces removal.
The preview indicates Eletrobras (BVMF:ELET3) will see the largest weight increase in the index, gaining 0.34%, followed by Cury with a 0.20% addition and mining giant Vale (BVMF:VALE3) with a 0.10% increase. Conversely, Petrobras (BVMF:PETR3) faces the most significant weight reduction at 0.75%, with water utility Sabesp (BVMF:SBSP3) losing 0.17% and São Martinho dropping 0.11%.
Morgan Stanley (NYSE:MS) estimates the trading impact based on approximately BRL27.9 billion (USD5.0 billion) in domestic mutual fund investments indexed to the benchmark. Cury is projected to experience the most substantial positive trading impact at 0.8 days of average daily trading volume, while São Martinho faces the largest negative impact at 0.9 days.
The exchange will publish a second preview on August 18, 2025, which may contain adjustments to the current list of additions and deletions. A third preview will follow before the final rebalancing takes effect in September.
The Bovespa index serves as Brazil’s primary equity benchmark, with both active and passive investment funds tracking its composition and adjusting their portfolios accordingly when changes occur.
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