According to Burns & Mitchell (1946), business cycles are kind of fluctuations founded in the economic activities (...) and a cycle consists in an expansion occurring at the same time in various economics activities, followed for a similar movement of recession, contraction and recuperation that merge to expansion phase from the next economic cycle. The aim of this study is to report Brazilian Business Cycles (BC) and cross the data with economic performance index (Return on Asset, Return on Sales, Return on Equity, Earnings per share, Price/ Earnings) of Brazilian companies listed at BM&F Bovespa that have been at IBrX index during the last ten years. Further more it will verify if these companies followed the Brazilian economic movements (BC) or if they have been immune to them. The performance index was positive and significant, that is they follow the movement of BC on crisis and expansions, with the exception of the index Price/Earnings (P/E) that was negative and not significant.