This article aims to verify if the Brazilian companies' Capex have any contribution to their performance. The Brazilian companies considered were those part of Ibovespa from 1998 to 2007. It is hard to find in the literature studies that investigate how capex affect the companies' performance (LI, 2004). In Brazil, the researches normally analyze the impact on the stock prices based on the information's disclosure through window events technique (ANTUNES; PROCIANOY, 2003; FAMÁ; LUCCHESI, 2005; LYRA; OLINQUEVICTH, 2007; MCCONNELL; MUSCARELLA, 1985). This could be considered a gap in the financial discipline and this study is to reduce this gap. Thus, we employed the panel data technique with a sample of 508 companies. We also adopted the companies' market value and the earnings before interest and taxes (Ebit) as proxys for their performance. The results indicate that the capex has a positive relation to the companies' performance, however, no relation is found considering operational earnings. This suggests that Lyandres, Sun e Zhang (2008) and Titman, Wei e Xie (2004) results did not fit into Brazilian companies since there is no negative relation between capex and the companies' performance. We expect to give helping information to valuation model as well as guidance of quality on management decision.
Capex; Companies' performance; Market value; Earnings before interest and taxes; Panel data
