Made available in DSpace on 2015-12-03T18:33:11Z (GMT). No. of bitstreams: 1 Marcelo_Bueno_de_Morais.pdf: 923077 bytes, checksum: 0240fffe544bfb3c0675036c9ebb3cbd (MD5) Previous issue date: 2014-11-04 / This dissertation considers the relationship between the practice of corporate governance and the implied cost of capital by the Brazilian??s publicly held companies seeking companies in the Novo Mercado da BM&FBovespa has lower implied cost of capital over the business of Traditional Market. The sample was used in this research includes the 228 largest non-financial publicly held companies in Brazil, in which 114 include Novo Mercado and 114, Traditional Market. The period considers from 2000 to 2013. As a proxy for corporate governance was used companies included in Novo Mercado segment. The Easton estimation method was used to calculate the implied cost of capital. The results show strong evidence of lower cost of capital for higher levels of corporate governance during the last ten years. / Esta disserta????o investiga a rela????o entre a pr??tica da governan??a corporativa e o custo de capital impl??cito das empresas brasileiras de capital aberto, buscando verificar se as empresas do Novo Mercado da BM&FBovespa possuem menor custo de capital impl??cito em rela????o as empresas do Mercado Tradicional. A amostra utilizada contempla as 228 maiores empresas n??o financeiras de capital aberto do Brasil, sendo 114 do Novo Mercado e 114 do Mercado Tradicional. O per??odo de an??lise compreende os anos 2000 a 2013. Como proxy de governan??a corporativa foi utilizada a participa????o da empresa no Novo Mercado e para o c??lculo do custo de capital impl??cito foi utilizado o m??todo de Easton. Os resultados mostram que nos ??ltimos 10 anos existem fortes ind??cios apontando para custos de capital menores para maiores n??veis de governan??a corporativa.