Steven Tadelis

Professor of Economics, Business and Public Policy, and Sarin Chair in Leadership and Strategy, Haas School of Business at the University of California, Berkeley
Steven Tadelis

For more information on working with this expert, please contact:

Laurits R. Christensen

Rebecca Kirk Fair


Ph.D., economics, Harvard University; M.Sc., economics, Technion – Israel Institute of Technology

Summary of Experience

Professor Tadelis is an expert on e-commerce and the economics of the internet, industrial organization, and microeconomics, including game theory and auction theory. His work on e-commerce investigates online auctions and online bargaining, digital advertising, seller reputation and the determinants of trust, price salience, and algorithmic pricing. Professor Tadelis has also researched contract theory and design, with applications to outsourcing, privatization, strategic pricing, public and private sector procurement and award mechanisms, and strategic sourcing and pricing. He has been engaged by regulatory authorities and tech companies in a variety of investigations and litigation matters in both the US and Canada on topics such as consumer protection, pricing, and online advertising and has testified at deposition.

Professor Tadelis has a decade of experience working with online marketplaces and retailers. He served as a senior director and distinguished economist at eBay Research Labs, where he hired and led a team of economists focused on the economics of e-commerce, with particular attention to creating better matches of buyers and sellers; reducing market frictions by increasing trust and safety in eBay’s marketplace; understanding the underlying value of different advertising and marketing strategies; and exploring the market benefits of different pricing structures. He also served as vice president of economics and market design at Amazon, where he guided and supported economic analyses for business decisions across the company.

Professor Tadelis participated in the Federal Trade Commission’s 2018 hearings on “Competition and Consumer Protection in the 21st Century.” He testified on two panels: “Multi-Sided Platforms in Action” and “Nascent Competition: Is the Current Analytical Framework Sufficient?”

Professor Tadelis is the author of books on game theory and microeconomic theory, as well as a handbook chapter on two-sided e-commerce marketplaces and the future of retailing. He has published articles in and served on the editorial boards of leading economics, marketing, and management journals. He is a research associate at the National Bureau of Economic Research and a research fellow at the Centre for Economic Policy Research.