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Diana Moss

Vice President and Director of Competition Policy

Diana Moss is Vice President and Director of Competition Policy at the Progressive Policy Institute. From 2015-2023, Dr. Moss was President of the American Antitrust Institute. An economist, her work spans the economic, policy, and legal analysis of antitrust enforcement and sector regulation, with industry expertise in digital technology, energy, agriculture, airlines, telecommunications, media, and healthcare. Before AAI, Dr. Moss served at the Federal Energy Regulatory Commission where she coordinated the agency’s merger analysis and worked on landmark rule makings. She has also consulted in private practice in the areas of regulation and antitrust.

Dr. Moss has spoken widely on various topics involving competition policy and enforcement, testified before Congress, appeared before state and federal regulatory commissions, in federal court, at industry and academic conferences, and has made numerous radio and television appearances, including on CNN, PBS, NPR, CNBC, and others. She has published articles in numerous economic and legal journals, including: American Economic Review, Journal of Industrial Organization, The Antitrust Bulletin, The Antitrust Source, Antitrust Magazine, and Energy Law Journal. She is editor of Network Access, Regulation and Antitrust, and has contributed chapters to The Structure of American Industry, and the Global Competition Review’s (GCR’s) The Guide to Merger Remedies.

Dr. Moss was named to the GCR’s Women in Antitrust in 2016 and again in 2021. She has long championed the advancement of women in the law and economics profession. In 2021, Dr. Moss was inducted into the American Bar Association Antitrust Law Section’s Hall of Fame-inism. Diana Moss was named by Washingtonian Magazine’s “Washington DC’s Most Influential People” in 2022 and 2023. She holds a M.A. degree from the University of Denver and a Ph.D. from the Colorado School of Mines. Dr. Moss is Adjunct Faculty in the Department of Economics at the University of Colorado at Boulder.

See a full list of Diana’s speaking engagements.

Contact Diana: dmoss@ppionline.org

Recent Work

Op-Ed  |  May 12, 2025

Moss for ProMarket: Antitrust Should Be a Tool for Creating Abundance

  • Diana Moss
In the News  |  April 24, 2025

Moss in Bloomberg Law: Live Nation’s Legal Pressure Grows as Private, DOJ Suits Advance

  • Diana Moss
Op-Ed  |  April 10, 2025

Moss for Competition Policy International: Reshaping Competition Policy for the U.S. Airline Industry

  • Diana Moss
Press Release  |  April 9, 2025

New PPI Report Warns That DOJ’s Remedies in U.S. v. Google Could Short-Change Consumers

  • Diana Moss
Publication  |  April 9, 2025

Antitrust Remedies and U.S. v. Google: Putting the Consumer Back into the “Fix”

  • Diana Moss
In the News  |  March 26, 2025

Moss in The Deal: Capital One-Discover Purchase May Open Path to More Bank Mergers

  • Diana Moss
Feature  |  March 23, 2025

Moss for Washington Monthly: What Happens to Antitrust Under Trump?

  • Diana Moss
Op-Ed  |  January 9, 2025

Moss for ProMarket: Massachusetts Lawmakers Just Made It Harder for Trustbusters To Break Up the Live-Nation Ticketmaster Monopoly

  • Diana Moss
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