How Do Plural-Sourcing Firms Make and Buy? The Impact of Supplier Portfolio Design

The authors thank Paul Adler, John Armour, Laurence Capron, Tom Cotter, Teppo Felin, Michael Jacobides, Tina Kiefer, Tom Lawrence, Sally Maitlis, Alan Morrison, Andrea Polo, Thomas Powell, Deepak Somaya, P. K. Toh, Richard Wang, and Richard Whittington for helpful comments and suggestions. The authors are grateful to senior editor Matthew Bidwell and three anonymous reviewers for their constructive feedback. The authors also thank participants at the 2013 Ghoshal conference at London Business School, the 2013 Danish Research Unit for Industrial Dynamics (DRUID) conference, the 2013 Society for the Advancement of Socio-Economics (SASE) conference, the 2013 Novak Druce Center for Professional Service Firms conference at the Said Business School, and seminar audiences at the University of Minnesota, Universitat Pompeu Fabra, the University of Oxford, University College London, University of Lugano, and SKEMA Business School. Thanks are also due to David Tibbals and Ezequiel Zilberberg for their invaluable help with data collection. The authors gratefully acknowledge financial support for this research from the Novak Druce Center for Professional Service Firms at the University of Oxford British Academy/Leverhulme Small Research Grants, the Universitat Pompeu Fabra’s Marie Curie COFUND fellowship program, the Spanish Ministry of Economy and Competitiveness [Grant ECO2014-59225-P], and the Carlson School of Management Dean’s Office, University of Minnesota.