Why are Some Regions More Innovative than Others? The Role of Firm Size Diversity

We thank Ashish Arora, Joshua Gans, Avi Goldfarb, Nico Lacetera, Matt Mitchell, Mark Schankerman, Will Strange and seminar participants at the University of Toronto, the London School of Economics, the London Business School, the Queen's Conference on Innovation and Entrepreneurship, the REER conference at Georgia Tech, and the EARIE conference in Stockholm. We gratefully acknowledge generous financial support from the Martin Prosperity Institute, the Centre for Innovation and Entrepreneurship at the Rotman School of Management, and the Social Sciences and Humanities Research Council of Canada for funding this research. All errors and omissions are our own. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.