Vox Capital was the first certified impact investing fund in Brazil. Founded in 2009, it provides early-stage capital for companies offering innovative and scalable solutions to enhance the lives of low-income Brazilians, while aiming to simultaneously generate attractive market-rate financial returns for investors. This case examines the evolution of Vox Capital, across understanding the landscape, launching, raising funds, selecting investees, structuring deals, building investee capacities, tracking performance, developing internal systems, and advancing the field of impact investing.