Research
Working Papers
Ownership Concentration and Strategic Supply Reduction (with Ulrich Doraszelski, Katja Seim and Peichun Wang), Conditionally Accepted, American Economic Review
Media: NPR Planet Money
Common Ownership and Competition in the Ready-to-Eat Cereal Industry (with Matthew Backus and Christopher Conlon). Revise & Resubmit, Econometrica
Media: NPR Planet Money, Bloomberg, Yahoo, Harvard Law Forum on Corporate Governance
Keynote Address at the 2023 FTC Microeconomics Conference (video of Day 2)
Pricing and Entry Incentives with Exclusive Contracts: Evidence from Smartphones. Revise & Resubmit, Quantitative Economics
Video: Wharton Iron Prof
Empirical Studies of the Effects of Common Ownership (with Matthew Backus and Christopher Conlon). Under Review.
Work in Progress (Presentations Available)
Promotion and Prices: Evidence from New Ads for Old Drugs (with Amanda Starc)
Published (and Forthcoming) Work
Media Competition and News Diets (with Charles Angelucci and Julia Cagé). Forthcoming, American Economic Journal: Microeconomics
Media: VoxEU, The Hill, Yale Insights
Common Ownership in America: 1980-2017 (with Matthew Backus and Christopher Conlon), American Economic Journal: Microeconomics, 13 (3): 273-308, August 2021.
Winner of the AEJ:Micro Best Paper Award for 2023.
Related: The common ownership hypothesis: theory and evidence (with Matthew Backus and Christopher Conlon), Brookings working paper. Write-up here.
Data: Common Ownership Data
Press: Bloomberg, Bloomberg Opinion, MoneyWeek, Money & Banking, HLS Forum
Video: NBER LTAM
Theory and Measurement of Common Ownership (with Matthew Backus and Christopher Conlon). American Economic Review Papers & Proceedings, May 2020.
Ask Your Doctor? Direct-to-Consumer Advertising of Pharmaceuticals (with Amanda Starc). The Review of Economic Studies, Volume 86, Issue 2, 1 March 2019, Pages 836–881
Mixed Pricing in Online Marketplaces. (with Katja Seim), Quantitative Marketing and Economics, 14 (2), 2016, pp. 129-155.
Do newspapers serve the state? Incumbent party influence on the US press, 1869-1928 (with Matthew Gentzkow, Jesse M Shapiro, Nathan Petek). Journal of the European Economic Association, Vol 13 No 1 Feb 2015.
Competition and Ideological Diversity: Historical Evidence from U.S. Newspapers, (with Matthew Gentzkow and Jesse M. Shapiro). American Economic Review, Oct 2014.
The Effect of Newspaper Entry and Exit on Electoral Politics. (with Matthew Gentzkow and Jesse M. Shapiro). American Economic Review, Dec 2011.
Other Writing and Media
AP Insights: Paywalls, January 2016
The Common Ownership Hypothesis: Theory and Evidence (with Matthew Backus and Christopher Conlon). Brookings Economic Studies, January 2019.
Uncommon Implications of the Common Ownership Hypothesis (with Jeremy McClane). SSRN Working Paper 3902736.
Consumer Protection for Online Markets and Large Digital Platforms. Tobin Center Digital Regulation Project. May 20, 2021.
More Competitive Search Through Regulation. Tobin Center Digital Regulation Project. May 20, 2021.
How to Make the Market for Real Estate Agents More Competitive, PROMARKET, November 2021
America’s undeniable competition problem requires a regulatory fix, The Hill, November 2023
Videos for the Thurman Arnold Project at Yale: