Working Papers

• Common Ownership in America: 1980-2017 (with Matthew Backus and Christopher Conlon), NBER working paper.
  • 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
• Pricing and Entry Incentives with Exclusive Contracts: Evidence from Smartphones. Under Review
• Ownership Concentration and Strategic Supply Reduction (with Ulrich Doraszelski, Katja Seim and Peichun Wang), Revise & Resubmit, American Economic Review

Work in Progress (Presentations Available)

• Common Ownership and Competition in the Ready-to-Eat Cereal Industry (with Matthew Backus and Christopher Conlon)
• Media Competition and News Diets (with Charles Angelucci and Julia Cagé)
• News Media Productivity (with Ali Hortaçsu, Matthew Gentzkow, and Jesse Shapiro)
• Promotion and Prices: Evidence from New Ads for Old Drugs (with Amanda Starc)

Publications

• 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. Online Appendix
• Competition and Ideological Diversity: Historical Evidence from U.S. Newspapers, (with Matthew Gentzkow and Jesse M. Shapiro). American Economic Review, Oct 2014. Online Appendix
• The Effect of Newspaper Entry and Exit on Electoral Politics. (with Matthew Gentzkow and Jesse M. Shapiro). American Economic Review, Dec 2011. Online Appendix