Expectativas do mercado acionário durante a criseo que dizem as opções e microdados das ações da Petrobrás?

Resumo

This paper investigates the expectations and information asymmetries that agents have regarding a particular financial asset, in our case the preferred shares of Petrobrás. In order to investigate this we are going to use two approaches. The first one is based on Bates (1991) where through the estimation of the parameters implicit in stock option prices we can extract information about the moments of the agent’s stock prices probability distribution. The other one follows Easley et al (1996) and though the stock prices microstructure analysis provide a methodology to infer about the presence of information asymmetry between market agents, i.e. , if there are some people trading the share with a higher level of information than others. According to the results presented in this paper, the methodology discussed in Bates (1991) was efficient to capture market agent’s expectations, especially the subprime crisis reversal in 2008. The estimated value of the informed trading probability for Petrobrás shares is low, which means that negotiate this asset generate lower cost information to agents that reaches the market with a lower level of information.

Ficha do documento

Tipo

Dissertação

Ano

2013

Instituição

Fundação Getulio Vargas

Fonte

Repositório da FGV

Idioma

Português

Acesso

Não informado

Identificador

oai:repositorio.fgv.br:10438/10720

Temas

EconomiaDados

Palavras-chave

Stock market microstructure approachMercado financeiro - BrasilEconomiaAções (Finanças)PETROBRASInformação assimétrica