Rentabilidade e valor das companhias no Brasil: uma análise comparativa das empresas que aderiram aos níveis de governança corporativa da Bovespa / Companies value and profitability in Brazil: a comparative analysis of the enterprises that complied with the Corporate Governance levels of BOVESPA

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

By means of a set of devices, corporate governance represents a powerful instrument, capable of satisfactorily enhancing the economic and financial performance of enterprises, as well as the way through which suppliers of financial resources to these enterprises make sure they will have return on their investments. However, the refinement of the legal patterns of corporate governance of a country are usually faced with many obstacles, what slows the process that cannot meet the demands of the modern and dynamic market, which in turn urges some markets to create mechanisms of voluntary compliance of enterprises with the best practices of governance. Following a world trend, in December 2000 the Brazilian market implemented the private contracts between the São Paulo Stock Exchange (BOVESPA) and the quoted companies, which referred to agreements on further practice of corporate governance by the enterprises; this represents an alternative to the legislative reform on the subject matter. Thus, the aim of this research focuses on analyzing whether there has been a significant change in the profitability or in the market value of these companies after compliance to the New Market (Novo Mercado), Level 2 or Level 1 of Corporate Governance of BOVESPA. It is an empirical-analytical study, in which three variables were statistically tested: Return on Assets (ROA), Return on Equity (ROE), and Enterprise Total Market Value (TQ). The study used Test t (parametric) and Wilcoxon (non-parametric) for the test of average significance. The results show that, after compliance, once analysis was carried out taking into account the group, there was a significant positive change in the average return on Assets, average return on Equity and average value of enterprise. On the other hand, when analyzed individually, 63,64% of the cases revealed an agreement with the hypothesis that there was significant positive change in the value of the company, however, as far as return on Assets and on Equity go, only 27,27% and 31,82% respectively of the individual cases were in agreement with the group analysis. It is important, though, to call the attention to the fact that not only compliance, but also micro and macroeconomic variables place an impact on the profitability of enterprises, as shown in the comparative analysis carried out with the control group. All the results in this research took into account reliability level of 95% and significance level of 5%. However, taking into consideration that the statistic tests have an underlying non-probabilistic sample, the results refer solely to the companies listed in the three levels of corporate governance of BOVESPA.

ASSUNTO(S)

value (accounting) lucro profit valor (contabilidade) corporate governance governança corporativa análise de quocientes ratio analysis

ACESSO AO ARTIGO

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