文章基本信息

标题：Determinantes de Ratings Corporativos no Setor de Petróleo: o Caso da Petrobrás
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作者：Rosemarie Bröker Bone
期刊名称：RAC - Eletrônica
印刷版ISSN：1981-5700
出版年度：2007
卷号：1
期号：3
页码：107-125
出版社：Associação Nacional de Pós-Graduação e Pesquisa em Administração
摘要：Since the 1990s, the integration of international financial markets brought with it the use of risk measurement tools to developing countries, such as credit ratings. These ratings are a requirement for the Oil and Gas industry firms financing. Rating agencies state that they provide a sinthetic indicator of inside information they have access to, while their critics argue that ratings merely reflect publicly available information, they are predictable and should be considered useless. This paper specifies an orded logit rating forecast model using only economic and financial indicators using publicly available balance sheet data. The model selected is able to forects most of PETROBRÁS ratings, using only two indicators. The results suggest that ratings are predictable and that their informational content seems limited.
关键词：corporate ratings ; PETROBRÁS ; forecast model.