Information in financial markets, Market microstructure, Financial intermediation, Industrial organisation, Contract theory
2005 Visiting Professor, Olin School, Washington University.
2004 - 05 Chairman of the Economics Department, Hebrew University
2004 - Emil Speyer Associate Professor of Economics, Hebrew University
2002 - Member of the Center for the Study of Rationality, Hebrew University.
2001 - Associate Professor, School of Business and Department of Economics, Hebrew University.
2001 Visiting Professor, University of Amsterdam and Tinbergen Institute.
2000 - 01 Visiting Professor, Recanati School of Management, Tel Aviv University.
1997 - 01 Senior Lecturer, School of Business and Department of Economics, Hebrew University.
1989 - 97 Assistant Professor, W.E. Simon Graduate School of Business, University of Rochester.
1993 - 94 Lady Davis Fellow, Department of Economics, Hebrew University.
1988 - 89 Lecturer, Graduate School of Business, University of Chicago.