Ildikó Magyari

Principal, Cornerstone Research;
Adjunct Assistant Professor, Department of Economics,
Columbia University

Contact

  • New York

Education

    • Columbia University, Ph.D.
    • Central European University, M.A.
    • Bucharest University of Economic Studies, M.Sc.
    • Bucharest University of Economic Studies, B.Sc.

Ildikó Magyari applies industrial organization (IO) and econometric techniques to antitrust and competition issues, with a focus on mergers and acquisitions (M&A), merger investigations, and antitrust litigation matters involving the technology sector. Dr. Magyari analyzes the competitive effects of high-profile horizontal, vertical, and multisided platform mergers in numerous industries, including agriculture, chemicals, consumer products, digital technology, gaming, medical technology, media, oil and gas, retail, sports betting, and wholesale.

In class action litigations related to the technology sector, Dr. Magyari uses IO models to analyze competitive effects and quantify damages resulting from alleged anticompetitive behavior or contractual clauses, such as Platform Most-Favored-Nation (PMFN).

Dr. Magyari supports clients and experts in complex mergers and other antitrust and competition matters, including technology class actions filed in U.S. federal courts. She has consulted to the parties on merger review matters involving U.S. and international competition agencies, including the Federal Trade Commission (FTC), the Department of Justice (DOJ), the Canadian Competition Bureau (CCB), and the European Commission (EC). Dr. Magyari has also prepared economic analyses for Securities and Exchange Commission (SEC) investigations related to the Foreign Corrupt Practices Act (FCPA) and for subsidy disputes by the World Trade Organization (WTO).

Dr. Magyari’s current research focuses on the competitive effects of partial and cross ownership interests in vertical and multisided platform mergers. She has published discussion papers with the National Bureau of Economic Research (NBER), the U.S. Census Bureau’s Center for Economic Studies (CES), and in various antitrust publications. The Wall Street Journal and the Washington Post, as well as the Joint Economic Committee of the U.S. Congress, have featured her research on the impact of Chinese imports on U.S. employment.

Dr. Magyari has served as Young Economist Representative on the International Committee of the American Bar Association’s Antitrust Law Section. She is an adjunct assistant professor of economics at Columbia University, where she teaches a graduate course in industrial organization and antitrust.

From 2014 to 2017, Dr. Magyari served as a Special Sworn Status researcher at the U.S. Census Bureau. In that role, she developed a novel method for quantifying U.S. firms’ domestic in-house versus offshore material-input sourcing.

Professional Affiliations
    • American Bar Association Section of Antitrust Law
    • American Economic Association
    • European Economic Association
Press Release

Cornerstone Research Elevates Senior Professionals to Vice President and Principal

Event

ABA micro.Economics Series: Diversion Ratios and Gross Upward Pricing Pressure Indices

Event

Crash Course in Merger Control: Working with Economists on Mergers Reviews

Article

Antitrust and International Commerce

Article

Crash Course in Global Merger Control

Event

Crash Course in Global Merger Control

Press Release

2025 Antitrust Writing Awards

Event

Merger Enforcement Trends Internationally: Homegrown or US Export?