This course provides PhD students with the necessary knowledge and tools to do research in industrial organization and competition policy. The material covered in this class focuses mostly on the structure of markets, and the strategic behavior of firms and consumers. The emphasis will be on empirical work, but we will also spend time talking about the importance of combining data with theory and suitable econometric techniques in order to study issues in Industrial Organization. Topics include the evaluation of market power and mergers, product differentiation, productivity, collusion, price discrimination, entry and product positioning, and auctions.