Evidências empirícas sobre a relação entre EVA e Retorno Acionário nas empresas brasileiras - Empirical evidence on the relationship beween EVA and Stock Returns in brazilian firms
Abstract
Este artigo fornece evidências empíricas sobre a relação entre Valor Econômico Adicionado (EVA) e retornos acionários de empresas brasileiras. A relação entre essas variáveis têm sido motivo de controvérsia nos últimos anos, com alguns autores encontrando associações significativas entre elas, enquanto outros não encontrando nenhuma. A hipótese de que o EVA afeta os retornos acionários é testada através de regressão linear, utilizando-se modelos alternativos. A amostra é composta de empresas negociadas na mais importante bolsa de valores brasileira. Uma comparação entre os resultados deste estudo com os de estudos anteriores mostram que resultados significativos dependem da determinação das variáveis apropriadas (retornos acionários versus preços das ações), bem como da correta relação dinâmica entre a variável dependente e a independente. This paper provides empirical evidence on the relationship between Economic Value Added (EVA) and stock returns in Brazilian firms. This relationship between these variables has been subject to controversy in recent years, with some authors finding significant associations between them while others find none. The hypothesis that EVA affects stock returns is tested through linear regression, using alternative models. The sample is comprised of companies that are traded on the most important Brazilian stock exchange. A comparison of the outcomes of our study with those of previous studies shows that significant results depend on determination of the appropriate variables (stock returns versus stock prices), as well as of the correct dynamic structure between the dependent and the explanatory variable.Downloads
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