Modelos de gestão de portfólios e eficiência de mercado

• Ano de defesa: 2011
• Autor(a) principal: Ortiz, Fernando José Schild
• Orientador(a): Alvim, Augusto Mussi
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre
• Palavras-chave em Português: ECONOMIA; MERCADO FINANCEIRO; PORTFÓLIOS; MERCADO - PESQUISAS; ANÁLISE FINANCEIRA
• Link de acesso: http://hdl.handle.net/10923/2624

The primary aim of this work is to review the Modern Portfolio Theory (MPT) and the Capital Asset Pricing Model (CAPM) while pointing out the comun assumptions of theses models, wich are the market efficiency and the use of normal distribuition to describe assets returns. The concept of market efficiency, which is a basic assumption behind these models, is reviewed as well. One of the latest analysis on market behavior, the so-called “Behavioral Finance Theory”, is briefly discussed as an attempt to speculate about possible sources of inefficiency. Empirical studies that have been already performed in different markets to verify the existence of market anomalies are as well presented. Afterwards, as the primary goal of the work, the results of empirical studies performed to test the market efficiency hypothesis in the Brazilian markets are showed in order to contribute to the discussion regarding market efficiency and models using this underlying assumption. Conclusions about the performed tests are drawn thereafter and the fixed fractional trading principle (optimal f) – an alternative model for portfolio construction – is mentioned as a suggestion for future research.