Renato AguiarSALES, R. M.DE SOUSA, L. A.IMONIANA, J. O.2023-08-262023-08-262004-06-21AGUIAR, R.; SALAES, R. M.; DE SOUSA, L. A.; IMONIANA, J. O. Stocks classification using fuzzy clustering. Proceedings of the International Conference on Artificial Intelligence, IC-AI'04, v. 1, p. 249-255, jun. 2004.https://repositorio.fei.edu.br/handle/FEI/5068The main objective of this paper is to investigate the application of a pattern recognition technique as a supporting tool for stock investment decision taking by the public companies in the Brazilian Stock Market. The technique, known as fuzzy clustering means is applied to a set of indexes extracted from the quarterly financial statements relating to the 4 th quarter of 1994 through the 2nd quarter of 2002 belonging to oil/petrochemical and textile companies. The technique separates a group of companies into two sets. Having a set with higher potential returns than the other. And besides that, the set of stocks of the companies produced a higher potential yields and an average financial returns closer to the Bovespa index.Acesso RestritoArtigo de eventoFinancial indexFuzzy clustering meansPartitional clusteringPattern recognitionStock classification