This report is the result of a collaborative project which was carried out by members of the Circular Economy 100, a program curated by the Ellen MacArthur Foundation. The participants aimed to: (1) understand the implications of a circular economy on the business and financing models of companies; (2) determine how a transition to a circular economy can be supported and accelerated by the financial system; and (3) co-develop and share communication strategies and tools to make the transition clear and tangible to our colleagues, clients, and academics.