Aberturas de capital no Brasil: análise das ofertas públicas iniciais de ações

Abstract

Since 2004, it has been noticed through the specialized media a great excitement in the Brazilian stock market. Nine (greatest amount since 1986) Initial Public Offers (IPO) were carried out along 2005 generating about R$ 5 billion. In 2006, 26 new offers were carried out and the beginning companies made around R$ 15 billion. In 2007, the number of IPO’s achieved a record of 64 new companies (more than R$ 55 billion), a landmark in the history of the Brazilian stock market. The enthusiasm of investors towards the initial offers reached a level where the stock markets decided to sell their own stocks. Natural people forgot their fear of the risk for a while trying to increase their income considering the decline of ordinary funds. BM&F’s IPO, for instance, had 275 thousand natural people among the investors. Concerning all this excitement and some notorious cases of success and others of low performance of beginning companies in the stock market, the following work analyses the return of investments made in initial public offers of stocks in Brazil carried out between 2005/01/01 and 2007/07/31. Besides a comparative study of the return of the stocks with the CDI tax variation and the Ibovespa, it was a done an analyses of the behavior of investments according to the market section and a study of the profitability of long term funds. Among 81 companies, only 30 had positive results, which demonstrate a low performance considering the initial enthusiasm and the excessive increase of values. The profitability of stocks was only superior to the CDI and Ibovespa variation in a shot term frame and the papers seemed to be more volatile than the market average. It was also noticed that the return of investments is attached to the performance of each market section and the profitability of funds was not superior in a long term frame.