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Katja Seim

Katja Seim

Sharon Oster Professor of Economics and Management

Katja Seim is the Sharon Oster Professor of Economics and Management at Yale University with joint appointments in the School of Management and in the Department of Economics. Her research focuses on topics of industrial organization, regulation, and antitrust. Prior to joining Yale University, Seim was an Associate Professor at the University of Pennsylvania’s Wharton School and served as the Chief Economist to the Federal Communications Commission. Previously, she was an Assistant Professor of Economics at the Stanford Graduate School of Business.

Seim currently serves as a Co-Editor of the American Economic Review. She is a Faculty Research Fellow of the National Bureau of Economic Research (NBER), the Centre for Economic Policy Research (CEPR), the Mannheim Centre for Competition and Innovation, and Yale University’s Thurman Arnold Project and Tobin Center for Economic Policy. She is also a Non-resident Fellow of the Economic Studies Program at the Brookings Institution and a board member of the Industrial Organization Society.

Seim’s research has been published in such journals as Econometrica, the American Economic Review, the RAND Journal of Economics, and the American Economic Journal Microeconomics, among others. Her recent research studies the role of consumer inattention in firm pricing and competition in online markets. She has analyzed firms’ strategic entry and pricing responses to a range of public policies, including subsidization, entry and technology deployment regulations, competition policy, and tax policy. Her work also evaluates the role of market power in affecting efficiency and distributional outcomes of government efforts at procuring goods and services and selling assets, primarily in the context of spectrum auctions.

Seim holds a B.A. in economics and mathematics from Franklin & Marshall College and an M.A. and Ph.D. in economics from Yale University.


  • PhD, Yale University, 2001
  • BA, Franklin & Marshall College, 1995


Economies of Density in E‐Commerce: A Study of Amazonʹs Fulfillment Center Network

J.-F. Houde, P. Newberry, and K. Seim
Econometrica, issue 1, vol. 91

Working Papers

Elasticity and Curvature of Discrete Choice Demand Models

E. Miravete, K. Seim, and J. Thurk

Drip Pricing When Consumers Have Limited Foresight: Evidence from Driving School Fees

K. Seim, M.A. Vitorino, and D. Muir

The Welfare Consequences of Nominal Excise Taxation

E. Miravete, K. Seim, and J. Thurk


Sloan Foundation grant “Digital Markets,” 2021, with co-PIs Dirk Bergemann and Fiona Scott Morton.
Wharton Public Policy Initiative, 2013; Dean’s Research Fund, 2010‐2013; Entrepreneurship and Family Business Research Centre, 2010; Global Initiatives Research Program, 2010, 2012; Mack Center for Technological Innovation, 2007‐2009, 2011.
Provost’s Undergraduate Research Mentorship Program research grant, 2009, 2015.
Fall 2018 Wharton School Award for Outstanding Teaching; Fall 2011 “Tough but we’ll thank you in five years” MBA Core Teaching Award.
Finalist INFORMS Society of Marketing Science Long Term Impact Award, 2016
Honorable Mention, 2010 Dick Wittink Best Paper Prize, QME.


Research Associate, National Bureau of Economic Research, 2014 - Present
Research Fellow, Centre for Economic Policy Research, 2016 - Present
Research Fellow, Mannheim Centre for Competition and Innovation, 2016 - Present


Co-Editor, American Economic Review, 2022-present
Co‐Editor, RAND Journal of Economics, 2017-21
Co‐Editor, Quantitative Marketing and Economics, 2020-21
Associate Editor, American Economic Review, 2021; RAND Journal of Economics, 2015-17; Journal of the European Economic Association, 2014-17; European Economic Review, 2012-15
Board of Editors, AEJ: Microeconomics, 2013-17