Tsolas, Ioannis E. - In: Journal of risk and financial management : JRFM 15 (2022) 7, pp. 1-10
utility ETFs. The range-adjusted measure (RAM)-based data envelopment analysis (DEA) model is used in this work to evaluate a … set of utility ETFs and rank inefficient funds, while the super-efficiency RAM model is used to fully rank RAM …