Fusões e Aquisições Bancárias no Brasil: Uma Avaliação da Eficiência Técnica e de Escala
The Brazilian banking sector experimented huge changes in the last years. This provoked a wave of banking mergers and acquisitions (M&As) and the penetration of some foreign banks in the Brazilian retail banking market. Bradesco, Itaú, Unibanco, Santander, ABN Amro and HSBC became the leaders of the private segment of banking sector. This paper aims at evaluating if M&As enhanced the efficiency of these banks. For this purpose, we use a non-parametric technique, Data Envelopment Analysis (DEA). The findings of the applied research show that there were improvements in the intermediation efficiency for all the six banks, while only two banks enhanced in the profit efficiency. Besides, there are a large range of constant returns of scale, that is between R$ 30-40 billion and R$ 100 billion.
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