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Previous issue date: 2014-06-25 === The objective of this work is to identify the variables related to the operational and market aspects that influence the Market Value of the companies from meat and derivatives segment listed in S??o Paulo Stock Exchange over the period 2007 until 2013. The study was developed from the perspective of two theoretical axles. The first was an analysis of Market Value contributions as a useful indicator for determining the fair market value created for shareholders and, therefore, constitute a solid basis for measurement of companies performance. The second was the efficient market hypothesis which considers the information s efficiency or the impact of certain information on pricing assets. The results produced by the model ratified some of the hypotheses in this research, both in individual significance as on some independent variable sign. In addition, the model presented global significance, given by F test, at 5%, with a coefficient of multiple determination adjusted of 9,22% === O objetivo deste trabalho ?? identificar as vari??veis relacionadas aos aspectos operacionais e conjunturais que influenciam o Market Value das empresas do segmento de carnes e derivados listadas na BM&FBovespa, no per??odo de 2007 a 2013. O estudo foi elaborado sob a perspectiva de dois eixos te??ricos. O primeiro foi uma an??lise das contribui????es do Market Value como um indicador ??til para determina????o do valor justo de mercado criado aos acionistas e, portanto, constituindo uma base s??lida para mensura????o do desempenho das empresas. O segundo foi a hip??tese de mercado eficiente que considera a efici??ncia da informa????o ou o impacto de determinadas informa????es na precifica????o dos ativos. O modelo especificado produziu resultados que ratificaram algumas hip??teses da pesquisa, tanto na signific??ncia individual, quanto no sinal de algumas vari??veis independentes. Al??m disso, o modelo apresentou signific??ncia global, dada pelo teste F, a 5%, com um coeficiente de determina????o m??ltiplo ajustado de 9,22%.
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