The article studies the diversification behavior of four large diversified Colombian business groups five years before and after the 1991 trade opening, as measured by the entropy index. It is shown that the trade opening did not lead the business groups to reduce their diversification but...

The Distribution Frontier is calculated for the Colombian economy using the 2005 supply and utilization matrixes data of goods in current prices. A basic model of circular capital is used based upon Sraffa (1960), Pasinetti (1986), and Muñoz and Riaño (1992). The frontier was calculated for...

The paper seeks to approach the effect of the Pension Funds Administrator's (AFP) affiliation to a business group, specifically in terms of performance and investment decisions. We used the Malmquist index from the DEA methodology (2001-2010) and the investments made by the AFPs and the...