Assimetria informacional e eficiência semiforte do mercado

Neuza Maria Belo and Haroldo Guimarães Brasil

RAE - Revista de Administração de Empresas, 2006, vol. 46, issue 0

Abstract: This study aimed to investigate the informational asymmetry in the Brazilian Stock Market, either upon calls for Ordinary General Assemblies or Board Meetings intended to increase capital through underwritings, or upon announcements communicating the decision of capital increase. Therefore, the semi-strong efficiency and the informational asymmetry of the market were verified. The data were obtained through the Stock Exchange and the database of the consulting firm, Lafis. Based on theoretical and empirical research, it investigated the existence of abnormal returns upon the announcement of new underwritings, and also the existence of abnormal returns accumulated for a previous period (–20 days) and a later period (+20 days), in relation to the date of the announcement. The results of the research suggest not only the existence of informational asymmetry in the Brazilian Stock Market but also the absence of semi-strong efficiency in the market.

Date: 2006
References: Add references at CitEc
Citations:

Downloads: (external link)
http://bibliotecadigital.fgv.br/ojs/index.php/rae/article/view/37016 (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:fgv:eaerae:v:46:y:2006:i:0:a:37016

Access Statistics for this article

RAE - Revista de Administração de Empresas is currently edited by Eduardo Diniz

More articles in RAE - Revista de Administração de Empresas from FGV-EAESP Escola de Administração de Empresas de São Paulo (Brazil)
Bibliographic data for series maintained by Núcleo de Computação da FGV EPGE ().