Private Monitoring and Collective Reputation (with Roland Strausz)

Optimal Merger Remedies (with Andrew Rhodes)

Multiproduct-Firm Pricing Games and Transformed Potentials (with Nicolas Schutz)

Acquihiring for Monopsony Power (with Heski Bar-Isaac and Justin Johnson)
Revise & resubmit, Management Science.

Gravity with Granularity (with Holger Breinlich, Harald Fadinger, and Nicolas Schutz)
NEW DRAFT (May 31, 2023)

An Aggregative Games Approach to Merger Analysis in Multiproduct-Firm Oligopoly (with Nicolas Schutz)     Additional material: Online Appendix
Forthcoming, RAND Journal of Economics.

Consumer Search, Steering, and Choice Overload (with Patrick Rey)
Journal of Political Economy., 2024, vol. 132(5), 1684-1739.
An earlier version was circulated under the title Consumer Search and Choice Overload.

Horizontal Merger Policy: New Work on an Old Problem
A chapter prepared for the Econometric Society monograph Advances in Economics and Econometrics: Twelfth World Congress, Cambridge University Press.

Collective Brand Reputation (with Roland Strausz)
Journal of Political Economy, 2023, vol. 131(1), 1-58 (lead article).

Concentration Thresholds for Horizontal Mergers (with Michael D. Whinston)
American Economic Review, 2022, vol. 112(6), 1915-1948.
An earlier version was circulated under the title Concentration Screens for Horizontal Mergers.

Collusion, Mergers, and Related Antitrust Issues (with John Asker)
In: The Handbook of Industrial Organization, Vol. 5, 2021, North Holland.

Merger Policy in a Quantitative Model of International Trade (with Holger Breinlich and Nicolas Schutz)
Economic Journal, 2020, vol. 130(2), 393-421.
    Additional material: Online Appendix

Internal vs. External Growth in Industries with Scale Economies: A Computational Model of Optimal Merger Policy (with Ben Mermelstein, Mark Satterthwaite and Michael D. Whinston)
Journal of Political Economy, 2020, vol. 128(1), 301-341.
    Additional material: Online Appendix

Exclusive Dealing and Vertical Integration in Interlocking Relationships (with Patrick Rey)
Journal of Economic Theory, 2018, vol. 177, 183-221.

Multiproduct Firm Oligopoly: An Aggregative Games Approach (with Nicolas Schutz)
Econometrica, 2018, vol. 86(2), 523-557.
    Additional material: Online Appendix

Quasi-Linear Integrability (with Nicolas Schutz)
Journal of Economic Theory, 2017, vol. 169, 603-628.
    Additional material: Addendum

When and How the Punishment Must Fit the Crime (with George J. Mailath and Lucy White)
International Economic Review, 2017, vol. 58(2), 315-330. Lead Article.

International Aspects of Merger Policy: A Survey (with Holger Breinlich and Nicolas Schutz)
International Journal of Industrial Organization, 2017, vol. 50, 415-429. (EARIE Special Issue.)

Globalization and Multiproduct Firms (with Stephen Yeaple)
International Economic Review, 2014, vol. 55(4), 993-1018.

Vertical Relations under Credit Constraints (with John Thanassoulis)
Journal of the European Economic Association, 2014, vol. 12(2), 337-367.

Merger Policy with Merger Choice (with Michael D. Whinston)
American Economic Review, 2013, vol. 103(2), 1006-1033.

Advance-Purchase Discounts as a Price Discrimination Device (with Martin Peitz and Frank Rosar)
Journal of Economic Theory, 2011, vol. 146(1), 141-162.

Dynamic Merger Review (with Michael D. Whinston)
Journal of Political Economy, 2010, vol. 118(6), 1200-1251.

Competition for Scarce Resources (with Peter Eso and Lucy White)
RAND Journal of Economics, 2010, vol. 41(3), 524-548.

Vertical Merger, Collusion and Disruptive Buyers (with Lucy White)
International Journal of Industrial Organization, 2010, vol. 28(4), 350-354. (EARIE Special Issue.)

An Assignment Theory of Foreign Direct Investment (with Stephen Yeaple)
Review of Economic Studies, 2008, vol. 75(2), pp. 529-557.

Platform Ownership (with Martin Peitz and Konrad Stahl)
Journal of the European Economic Association, 2007, vol. 5(6), pp. 1130-1160.

Do Vertical Mergers Facilitate Upstream Collusion (with Lucy White)
American Economic Review, 2007, vol. 97(4), pp. 1321-1339.

Collusion and Dynamic (Under-)Investment in Quality
RAND Journal of Economics, 2007, vol. 38(1), pp. 227-249.

A Theory of Clearance Sales (with Martin Peitz)
Economic Journal, 2007, vol. 117(522), pp. 964-990.

Cross-Border Mergers and Acquisitions versus Greenfield Foreign Direct Investment: The Role of Firm Heterogeneity (with Stephen Yeaple)
Journal of International Economics, 2007, vol. 72(2), pp. 336-365.

A Gap for Me: Entrepreneurs and Entry
Journal of the European Economic Association, 2006, vol. 4(5), pp. 929-956.

Firm Turnover in Imperfectly Competitive Markets (with Marcus Asplund)
Review of Economic Studies, 2006, vol. 73(2), pp. 295-327.

Business Strategy, Human Capital, and Managerial Incentives (with George J. Mailath and Andrew Postlewaite)
Journal of Economics & Management Strategy, 2004, vol. 13(4), pp. 617-633.

Hyperbolic Discounting and Secondary Markets (with Martin Peitz)
Games and Economic Behavior, 2003, vol. 44(1), pp. 77-97.

Monopolisation and Industry Structure
Economics Working Paper 2000-W27, Nuffield College, Oxford.

Cartel Stability under Capacity Constraints: The Traditional View Restored
STICERD Discussion Paper EI/23, London School of Economics.