Roberto do Nascimento Ferreira

GOVERNANÇA CORPORATIVA E VALOR DA FIRMA: um estudo de empresas brasileiras do setor elétrico

This research aimed to examine the effects of adopting corporate governance mechanisms on the market value of publicly traded companies of the Brazilian electric sector in the period 2008-2012. To that end, a governance quality index was constructed, using the Principal Component Analysis method, involving 12 variables representing the governance mechanisms recognized by the agency theory, based on works by Correia (2008) and Peixoto (2012). This index was used in the regressions with panel data, in association with Tobins Q and MBA (market-to-book on assets). The results revealed a negative and significant relationship, which may be linked to the particularities of the electricity sector, or to the fact that the Brazilian capital market is underdeveloped, or even to the low level of liquidity of companies.

Governança corporativa, eficiência, produtividade e desempenho

There are a large number of research which main purpose is the search for a empirical relationship between corporative governance and the performance. Studies which seeks to demonstrate this relationship characterized by the use of financial indicators and indicators of stock analysis, combined with the use of econometric methods. However, there are suggestions so that be established alternative measures of performance, such as use of non-parametric analysis. Measuring the performance using other analysis techniques to assess the relationship between corporate governance and performance represents a relevant contribution to this study field. By using the nonparametric technique of Data Envelopment Analysis, the main objective of this paper is to verify whether there are significant differences between technical efficiency and productivity of companies in the segments of corporate governance with the technical efficiency and productivity of companies in other segments of Bovespa. The technical efficiency scores showed no significant differences between groups of companies with and without governance. However, in the years of 2008 and 2009 companies with shares traded on other segments of Bovespa showed a higher level of technical efficiency. Similar results were observed with the Malmquist productivity index. In order to establish parameters in the comparison of the performance achieved by the efficiency scores were analyzed the traditional metrics for measuring the value, Tobins Q and Firm Value. It was observed in the three years analyzed that the market value of companies in the segments of corporate governance is lower than the companies of other segments of stock trading. This research advances over previous contributions have focused on determining the performance, too, by measuring technical efficiency and productivity growth. The results allow a new angle of analysis in the evaluation of companies in a specific way for the adoption of good corporate governance practices.

Governança corporativa e valor da firma: um estudo de empresas brasileiras do setor elétrico [doi: 10.5329/RECADM.2014014]

Esta pesquisa pretendeu analisar os efeitos da adocao de mecanismos de governanca corporativa pelas empresas de capital aberto do setor eletrico brasileiro sobre seu valor de mercado, no periodo de 2008 a 2012. Para tanto, construiu-se um indice de qualidade da governanca, pelo metodo Analise de Componentes Principais, envolvendo 12 variaveis representativas dos mecanismos de governanca reconhecidos pela Teoria de Agencia, baseado nos trabalhos de Correia (2008) e Peixoto (2012). Tal indice foi utilizado nas regressoes com dados em paineis, em associacoes com Q de Tobin e MBA ( market-to-book sobre o ativo). Os resultados revelaram uma relacao negativa e significativa, que pode estar associada as particularidades do setor eletrico, ao fato de o mercado de capitais brasileiro ser pouco desenvolvido, ou mesmo ao reduzido nivel de liquidez das empresas. Palavras-chave Governanca Corporativa. Valor de Mercado. Analise dos Componentes Principais. CORPORATE GOVERNANCE AND FIRM VALUE: A STUDY OF BRAZILIAN COMPANIES IN THE ELECTRIC SECTOR ABSTRACT This research aimed to examine the effects of adopting corporate governance mechanisms on the market value of publicly traded companies of the Brazilian electric sector in the period 2008-2012. To that end, a governance quality index was constructed, using the Principal Component Analysis method, involving 12 variables representing the governance mechanisms recognized by the agency theory, based on works by Correia (2008) and Peixoto (2012). This index was used in the regressions with panel data, in association with Tobins Q and MBA (market-to-book on assets). The results revealed a negative and significant relationship, which may be linked to the particularities of the electricity sector, or to the fact that the Brazilian capital market is underdeveloped, or even to the low level of liquidity of companies. Keywords Corporate Governance. Market value, Principal Components Analysis.

Gobierno corporativo, eficiencia, productividad y desempeño

There are a large number of research which main purpose is the search for a empirical relationship between corporative governance and the performance. Studies which seeks to demonstrate this relationship characterized by the use of financial indicators and indicators of stock analysis, combined with the use of econometric methods. However, there are suggestions so that be established alternative measures of performance, such as use of non-parametric analysis. Measuring the performance using other analysis techniques to assess the relationship between corporate governance and performance represents a relevant contribution to this study field. By using the nonparametric technique of Data Envelopment Analysis, the main objective of this paper is to verify whether there are significant differences between technical efficiency and productivity of companies in the segments of corporate governance with the technical efficiency and productivity of companies in other segments of Bovespa. The technical efficiency scores showed no significant differences between groups of companies with and without governance. However, in the years of 2008 and 2009 companies with shares traded on other segments of Bovespa showed a higher level of technical efficiency. Similar results were observed with the Malmquist productivity index. In order to establish parameters in the comparison of the performance achieved by the efficiency scores were analyzed the traditional metrics for measuring the value, Tobins Q and Firm Value. It was observed in the three years analyzed that the market value of companies in the segments of corporate governance is lower than the companies of other segments of stock trading. This research advances over previous contributions have focused on determining the performance, too, by measuring technical efficiency and productivity growth. The results allow a new angle of analysis in the evaluation of companies in a specific way for the adoption of good corporate governance practices.

Corporate governance, efficiency, productivity and performance

There are a large number of research which main purpose is the search for a empirical relationship between corporative governance and the performance. Studies which seeks to demonstrate this relationship characterized by the use of financial indicators and indicators of stock analysis, combined with the use of econometric methods. However, there are suggestions so that be established alternative measures of performance, such as use of non-parametric analysis. Measuring the performance using other analysis techniques to assess the relationship between corporate governance and performance represents a relevant contribution to this study field. By using the nonparametric technique of Data Envelopment Analysis, the main objective of this paper is to verify whether there are significant differences between technical efficiency and productivity of companies in the segments of corporate governance with the technical efficiency and productivity of companies in other segments of Bovespa. The technical efficiency scores showed no significant differences between groups of companies with and without governance. However, in the years of 2008 and 2009 companies with shares traded on other segments of Bovespa showed a higher level of technical efficiency. Similar results were observed with the Malmquist productivity index. In order to establish parameters in the comparison of the performance achieved by the efficiency scores were analyzed the traditional metrics for measuring the value, Tobins Q and Firm Value. It was observed in the three years analyzed that the market value of companies in the segments of corporate governance is lower than the companies of other segments of stock trading. This research advances over previous contributions have focused on determining the performance, too, by measuring technical efficiency and productivity growth. The results allow a new angle of analysis in the evaluation of companies in a specific way for the adoption of good corporate governance practices.