In this paper, we present a new measure of concentration that employs duality theory and a study on the evolution of banking concentration in the Brazilian banking system. We present evidence suggesting that this new measure of concentration is more informative than the usual...

We investigate the determinants of the capital structure of Brazilian companies between 2000 and 2009. We use a quantile regression model and compare its results with the ones provided by conventional models (least squares and fixed effects). We show that the effects of the capital structure...