Joanna Hornik

Senior Economist


Joanna Hornik is a Senior Economist at Compass Lexecon, based in Brussels.

Joanna’s work focuses on the application of economic analysis and econometric techniques to competition policy cases. Her experience covers a range of industries including financial services, semi-conductors, digital platforms, media, FMCG, insurance and manufacturing, among others.

Joanna has been involved in high-profile mergers such as NVIDIA/Arm, HHI/DSME and PKN Orlen/Lotos which were under investigation by the European Commission. She worked on a number of competition cases which were dealt with by the Polish UOKiK, such as the acquisition of Pini Polonia by Smithfields and a Phase II merger investigation in the leisure sector.

Joanna also supports clients in the context of antitrust investigations, related to both Article 101 and Article 102 TFEU. Examples are the Amazon marketplace investigation by the European Commission and economic work related to the assessment of alleged price fixing and exchange of information between wood panel manufacturers in Poland, in the context of an appeal of UOKiK’s decision

She is currently part of the team that provides economic advice in the context of the class action proceedings against Mastercard in the UK.

Joanna holds an M.A. in European Economic Studies (specialization in European Law and Economic Analysis) from the College of Europe, Belgium and a B.A. in Economics, Political Science and International Relations from University College Roosevelt (Utrecht University), the Netherlands.

After her studies, she worked as an Academic Assistant in the Economics department of the College of Europe, Belgium, where she was responsible for courses in law and economics of competition, industrial organisation as well as economics and regulation of network industries.

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    • MA in European Economic Studies, College of Europe
    • BA in Economics, Political Science & International Relations, University College Roosevelt

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