Evaluation of Merger and Acquisition Processes in the Brazilian Banking Sector by means of an Event Study

Daniel Reed Bergmann, José Roberto Ferreira Savoia, Bruno de Melo Sousa, Frederic de Mariz


Objective – Analyze the reactions of the stock market to M&A announcements, i.e. find out if there was value creation and consequently maximization of shareholder wealth or whether there was value destruction and consequently a decrease in the wealth of the shareholders of the acquiring companies in the short term.

Design/methodology/approach – Event study – Quantitative Method

Findings – It can neither be affirmed that the acquisitions had a significant impact on value creation for purchasers and banks, nor can it be denied. Given the lack of preponderance of either positive or negative returns, the transactions may have been perceived in different manners.

Practical implications – The results may be explained by the fact that the synergies that resulted from the M&A processes in the banking sector only helped consolidating major market players and consequently reduced competitiveness in that sector. The negative abnormal returns of M&A processes are due to the monopolistic market competition structure (Tabak, Fazio & Cajueiro, 2012).

Contributions – Event Study with robust errors 


Event Study; Mergers and Acquisitions; Banks

DOI: https://doi.org/10.7819/rbgn.v17i56.2074

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