Daniel P. O'Brien

Senior Economic Advisor
Applied Research and Outreach
(202) 326-2398
Email Address:


Selected Publications

  • "The Welfare Effects of Third Degree Price Discrimination in Intermediate Good Markets: The Case of Bargaining," RAND Journal of Economics, 2014.
  • "The Welfare Effects of Use or Lose Provisions in Markets with Dominant Firms," with Ian Gale, American Economics Journal: Microeconomics, 2013.
  • "Bargaining, Bundling and Clout: The Portfolio Effects of Horizontal Mergers," with Greg Shaffer, RAND Journal of Economics, 2005.
  • "Vertical Antitrust as a Problem of Inference," with James Cooper, Luke Froeb, and Mike Vita, International Journal of Industrial Organization, 2005.
  • "The Antitrust Implications of Capacity Reallocation by a Dominant Firm," with Ian Gale, Journal of Industrial Economics, 2001.
  • "Competitive Effects of Partial Ownership: Financial Interest and Corporate Control," with Steve Salop, Antitrust Law Journal, 2000.
  • "Nonlinear Supply Contracts, Exclusive Dealing, and Equilibrium Market Foreclosure," with Greg Shaffer, Journal of Economics and Management Strategy, 1997.
  • "The Existence of Pareto Superior Price Limits," with Laura Kodres, American Economic Review, 1994.
  • "Vertical Control with Bilateral Contracts," RAND Journal of Economics, 1992.
  • "On the Dampening of Competition Effect of Exclusive Dealing," with Greg Shaffer, Journal of Industrial Economics.

Selected Presentations

  • "Tying, Bundling, and Bundled Discounts," University of British Columbia Summer IO Conference. Vancouver, Canada (2015)
  • "Privacy in Online Markets: A Welfare Analysis of Demand Rotations," Searle Conference on Internet Search and Innovation. Chicago, IL (2015)
  • "All Units Discounts and Double Moral Hazard," Bergen Competition Policy Conference. Bergen, Norway (2015)


Northwestern University
PhD Economics
Northwestern University
MA Economics
Carleton College
BA Economics

Fields of Interest

  • Microeconomics
  • Industrial Organization
  • Antitrust
  • Regulation
  • Game Theory
  • Applied Econometrics

Professional Experience

Senior Economic Policy Advisor
Bureau of Economics, Federal Trade Commission

Visiting Professor of Business Economics
Kelley School of Business, Indiana University

Chief, Economic Regulatory Section
Antitrust Division, U.S. Department of Justice

Deputy Director for Antitrust
Bureau of Economics, Federal Trade Commission

Assistant Professor of Economics
University of Michigan