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Chinalco and Rio Tinto Acquire 68.6% Stake in CBA

1/30/2026

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Summary

Story summary

Aluminium Corporation of China (Chinalco) and Rio Tinto will acquire a 68.6% stake in Companhia Brasileira de Aluminio (CBA) for 4.69 billion reais.
The deal covers 446.6 million shares at 10.50 reais from Grupo Votorantim.
The acquisition will be executed via a joint venture with Chinalco at 67% and Rio Tinto at 33% to improve cost control.
A mandatory tender offer for remaining shares could prompt CBA's delisting from the Sao Paulo exchange.

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Story summary

Aluminium Corporation of China (Chinalco) and Rio Tinto will acquire a 68.6% stake in Companhia Brasileira de Aluminio (CBA) for 4.69 billion reais.
The deal covers 446.6 million shares at 10.50 reais from Grupo Votorantim.
The acquisition will be executed via a joint venture with Chinalco at 67% and Rio Tinto at 33% to improve cost control.
A mandatory tender offer for remaining shares could prompt CBA's delisting from the Sao Paulo exchange.