... at the level of the individualfund. Mutual funds are operated by management companies, and the resources, policies, and culture of these companies play an important role in the determination of ... request.15 and higher fees of SRI funds in specialized management companies were due to the specificcharacteristics of these management companies and not to the SRI nature of these funds,then we would ... in performance and fees between SRI and conventional funds. Section 4 analyzes the role of management companies. Finally, Section 5 concludes.1 Data1.1 The fee structure of US mutual fundsMutual...