Guy has been the Executive Director of Microfinance Opportunities since 2012, and affiliated with the organization since 2007. During this time he has led numerous research projects on the financial capabilities of lowincome communities and financial education projects. He has advised or led 16 Financial Diaries projects in 13 countries, collecting detailed information on how people manage their cash flows—their income, expenses, and use of financial tools. Guy is also co-principal investigator of the Embedded Education Project at Harvard, which focuses on how to deliver education, including financial education, to marginalized populations through organizations and networks that do not have education as their primary purpose. Before becoming Executive Director of MFO, Guy was a Lecturer in Public Policy at the Harvard Kennedy School where he taught courses in management and microfinance for 13 years. He received his PhD from the University of Chicago in 1994.