O impacto das decisões de investimentos estratégicos sobre o valor de mercado das empresas quando tomadas por gestores otimistas e excessivamente confiantes

• Ano de defesa: 2011
• Autor(a) principal: Oliveira Neto, Luis Elesbão de
• Orientador(a): Barros, Lucas Ayres Barreira de Campos
• Banca de defesa: Kayo, Eduardo Kazuo , Kimura, Herbert , Nakamura, Wilson Toshiro , Silveira, Alexandre Di Miceli da
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Presbiteriana Mackenzie
• Programa de Pós-Graduação: Administração de Empresas
• Departamento: Administração
• País: BR
• Palavras-chave em Português: finanças comportamentais; otimismo e excesso de confiança; criação de valor; investimentos estratégicos; estudo de evento
• Palavras-chave em Inglês: behavioral finance; optimism and overconfidence; value creation; strategic investment; event study
• Área do conhecimento CNPq: CNPQ::CIENCIAS SOCIAIS APLICADAS::ADMINISTRACAO
• Link de acesso: http://dspace.mackenzie.br/handle/10899/23185

This quantitative research aims to investigate the impact of strategic investment decisions on firm value creation, when taken by optimistic and overconfident managers. The research was conducted under the irrational managers approach (BAKER et al., 2005) and used a sample consisting of 502 strategic investment announcements made by 131 managers from 116 different Brazilian publicly traded companies, from January/2005 to December/2009. Strategic investments are considered as being all capital expenditures which create growth opportunities for companies (KESTER, 1984). The empirical results suggest that investors react negatively to announcements of strategic investments when made by optimistic and overconfident managers, pointing that differences in style, opinion and perception of reality motivated by personal managers characteristics are perceived by the market and thus discounted from companies stock price. Unlike the models prescribed by Gervais et al. (2003) and Hackbarth (2004), which predict that moderate levels of optimism and overconfidence exhibited by managers are beneficial for firm s shareholders, only partial support was found to the hypothesis that the magnitude or degree of manager s optimism/overconfidence is relevant. The results suggest that managers who exhibit a moderate degree of optimism and overconfidence are better perceived by investors than others considered markedly biased. However, the results do not confirm the existence of a degree or level for optimism/overconfidence that is beneficial to the firm and also superior to others. Managers regarded as rational and less biased were those who had their strategic investment announcements best assessed by the market.