摘要：This article evaluates the efficiency of Colombian banking using nonparametric border models. The results indicate that there has been a gradual increase in efficiency and that the global financial crisis of 2008 affected this trend. Since 2009 there has been a rapid recovery of efficiency measures, except for cost efficiency. This suggests that, in the face of external shocks, the adjustment costs of banks are greater. Mergers and acquisitions contribute to the increase in banking efficiency.
关键词：efficiency frontier; financial system; non-parametric methods; fusions and acquisitions;frontera de eficiencia; sistema financiero; métodos no paramétricos; fusiones y adquisiciones;fronteira de eficiência; sistema financeiro; métodos não paramétricos; fusões e aquisições
