Despite efforts to define and clarify what ‘ESG funds’ are, the term’s ambiguity persists, leading to confusion and debate over the term, according to a recent report. The paper, How to Build a Better ESG Classification System, examines a selection of existing regulator and industry ESG fund classification frameworks in the US, the European Union and the UK, finding a lack of focus on observable features, imprecise definitions or an incomplete logical structure for assigning funds to mutually exclusive groups.