...Alexandre Teixeira Dias; Henrique Cordeiro Martins; Valdeci Ferreira Santos; Pedro Verga Matos; Greiciele Macedo Morais Purpose This research aims to identify the optimal configuration of investment which leads firms to their best competitive positions, considering the degree of concentration...

...Xuan Minh Nguyen; Quoc Trung Tran Purpose The paper investigates the effect of corruption on corporate investment efficiency around the world. Design/methodology/approach The sample includes 218,350 observations from 30,074 firms across 42 countries. The authors measure corruption based...