· Marc And Eva Stern Professor Of Law Business, Columbia Law School2025–
· Visiting Research Fellow, European University Institute2025–
· Visiting Professor Of Law, Stanford Law School2025–2025
· Faculty Director, Ira M. Millstein Center for Global Markets and Corporate Ownership at Columbia Law School2017–
· Isidor And Seville Sulzbacher Professor Of Law, Columbia Law School2015–2025
· Rosalinde And Arthur Gilbert Chair In Law, Business And The Economy, UC Berkeley2006–2015
· Faculty Co-director, Berkeley Center for Law and Business2005–2014
· Senior Economist, RAND Corporation2004–2013
· Ivadelle Theodore Johnson Professor Of Law And Business, University of Southern California1995–2006