Chiaki Hara obtained a B.A. on 1987 and an M.A. on 1989, both in economics, from Hitotsubashi University (Tokyo, Japan), and a Ph.D. in economics on 1993 from Harvard University (Massachusetts, U.S.A.). He was a University Lecturer at the Faculty of Economics and Politics (as so called back then) at the University of Cambridge from 1995 to 2004 and also a Fellow at Churchill College. He has since been at the Institute of Economic Research at Kyoto University (Kyoto, Japan). He
has been working on microeconomic theory and its applications to asset pricing and portfolio selection. He has published papers in Journal of Economic Theory, Journal of Mathematical Economics, Econometrica, Mathematics and Financial Economics, and Social Choice and Welfare. His current interest is mainly on Knightian uncertainty in financial markets and exploration of dynamic stochastic cooperative game theory.