Antoine Chapsal specializes in empirical and theoretical industrial organization. He has provided economic expertise in a large number of high-profile cases involving mergers, abuses of dominant positions, cartels, information exchanges, regulation, and damage quantification. Recent examples include the Lafarge/Holcim and Fnac/Darty mergers, as well as airfreight, cathode ray tube, and elevator cartel cases. Antoine Chapsal has also assisted various firms in designing optimized pricing strategies and contracts that comply with competition rules. Previously, he worked at the French Ministry of Economy, where he took part in the drafting of the horizontal merger guidelines, and in an American competition economics consultancy where he contributed to the analysis of major antitrust and merger cases. He regularly publishes articles on competition economics, on subjects ranging from the econometric analysis of cartels to geographic market delineation and exclusionary strategies. He is an affiliated professor at the Sciences Po department of economics and a member of the CESifo academic research network.