Mariann Leskó

Mariann Leskó

Netherlands, The Hague
Associate at CEG Europe
Profession: Economist
Industry: Competition, Regulatory / Enforcement, Economics


Associate at CEG economics consultancy since September 2022. Gained experience in antitrust between 2020-2022 as an Economic analyst at the Hungarian Competition Authority (GVH). After obtaining my masters degree in Economics (UvA, NL) and finishing supplementary courses in Data Science (U.Porto, PT), I started my professional life as a Quantitative model developer at Morgan Stanley. After two years of financial model development, my passion for competition lured me back to the economics field.


English, Hungarian, Dutch, French


AntitrustMarket Studies


CEG Europe

Associate at CEG Europe

September 2022 - Present • Rotterdam, Netherlands

Economic consultancy mostly for damages claims of abuse of dominance and cartel cases.

Gazdasági Versenyhivatal - the Hungarian Competition Authority

Economic Analyst at Gazdasági Versenyhivatal - the Hungarian Competition Authority

2 years 1 mth • July 2020 - August 2022 • Budapest, Hungary

Perform analysis in antitrust and merger cases (market power, theories of harm), support conducting market studies, sector inquiries.


University of Porto

Data Science courses within the QTEM exchange programme (

University of Amsterdam

Master in Economics Track: Markets and Regulation

Eötvös Loránd University

Applied Economics BA

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