Leslie M. Marx

Leslie Marx is a recognized economist and expert witness specializing in industrial organization, antitrust, and collusion.

Summary

Leslie is the Robert A. Bandeen Distinguished Professor Emeritus at the Fuqua School of Business at Duke University. She is an expert in auctions, vertical contracting, antitrust liability, and cartels. Professor Marx is well known for her innovative ideas in the areas of industrial organization, applied game theory, auctions, procurements, and collusion. She served as Chief Economist of the Federal Communications Commission from August 2005 through August 2006.

Professor Marx has published extensively in peer-reviewed journals and elsewhere on topics related to industrial organization, applied game theory, auctions, procurements, and collusion. Her published work includes papers on collusive mechanisms, incentives in procurement contracting, slotting allowances, and exclusive dealing. In addition, she was named to Global Competition Review’s 2025 Women in Antitrust and has been named on the Lexology Index (formerly Who’s Who Legal) list of leading competition economists since 2017.

Professor Marx is an Economic Theory Fellow of the Society for the Advancement of Economic Theory and a Fellow of the Econometric Society and the Game Theory Society. She has served on multiple academic journal editorial boards, journal and center advisory boards, and conference scientific committees.

Outside of antitrust, Professor Marx has also notched up numerous honors in the sport of fencing, including competing on the 1996 US Olympic team and winning three Pan-American gold medals and multiple national championships. She continues to participate in masters-level competitions, winning the World Championship for her age group in 2017, and assists with Duke’s varsity fencing team.