Purpose – The purpose of this paper is to examine market concentration, economies of scale, economies of scope, and the relative size of a particular fund, within a fund family, as determinants of mutual-fund expense ratio. This examination is focused at the asset-manager level and is based on...

Purpose – The purpose of this paper is to examine market concentration, economies of scale, economies of scope, and the relative size of a particular fund, within a fund family, as determinants of mutual‐fund expense ratio. This examination is focused at the asset‐manager level and is...