Portrait of Rocío Prieto López

Rocío Prieto López : Managing Consultant

Rocío is a member of Oxera’s Competition team. She has over ten years’ experience in applying economics to a wide range of competition policy issues, having provided advice to companies across different sectors and regulators.

Her experience in antitrust matters covers the application of econometric techniques for the analysis of merger efficiencies, quantifying damages relating to anticompetitive conducts, and performing market definition exercises. In particular, she has performed different analyses in the context of legal proceedings regarding horizontal agreements, cartels, vertical restrictions, and abuse of dominance.

Before joining Oxera, Rocío worked as a Senior Manager in the Competition Economics team at KPMG Spain, where her experience focused on the preparation of economic reports on cartel cases, abuse of a dominant position, self-evaluation of trade policies and market definition for national and international companies from diverse industries such as pharmaceuticals, retail distribution, capital markets, and the automotive and insurance sectors, among others. She has over five years’ experience of testifying before national courts across Spain in cases relating to damages claims arising from competition law infringements.

Her prior experience includes working as a Senior Analyst at Compass Lexecon, where she also focused on the application of economics and econometric techniques to competition policy matters. In addition, Rocío spent two years working at the Bank of Spain, where she developed diverse research studies in the macroeconomics field.

Rocío speaks English, and Spanish.

Tel: +34 679 96 34 26

Rocío's specialisms include:

Selected
professional experience

  • Advice to one of the leading online insurance comparators in Spain in relation to a potential acquisition of its main competitor (2024)

  • Advice to one of the main paper and packaging manufacturers in Spain in the context of potential stand-alone damages claims from Spanish retailers (2024–)

  • Advice to a leading supplier in the healthcare industry in relation to the eventual passing of a draft bill regarding distribution and pharmaceutical margin regulation in Spain (2024–)

  • Advice to one of the main supermarket chains in Spain in the context of a disciplinary proceeding relating to an alleged infringement of Law 12/2013, of measures to improve the functioning of the food chain (2023)

  • Advice to a leading supplier in the healthcare industry in the context of damages claims arising from an alleged Article 101 infringement after the investigations conducted by the Spanish competition authority (2022–)

  • Advice to a major oil operator in Spain in the context of damages claims arising from alleged vertical indirect price fixing after investigations conducted by the Spanish competition authority (2021–)

Selected
publications

  • Pérez, J.J. and Prieto, R. (2015), ‘Risk Factors and the Maturity of Subnational Debt: An Empirical Investigation for the Case of Spain’, in Public Finance Review, 43:6, pp. 786–815.

Qualifications

  • MSc Specialized Economic Analysis: Competition and Market Regulation, Barcelona Graduate School of Economics (Universitat Pompeu Fabra and Universitat Autònoma de Barcelona), Barcelona

  • MSc in Economics and Welfare Evaluation, Universidad Pablo de Olavide, Seville

  • BA Economics, Universidad de Sevilla, Seville

Latest Insights:  Rocío Prieto López

Rebooting Competition Policy?

Date: Tuesday 11 March 2025Registration: 13:00 CETCocktail reception: 18:30 CETLocation: Sparks, Rue Ravenstein 60, Brussels Join MLex, Oxera and Paul, Weiss for a half-day conference to discuss the rapidly-changing world of merger control and antitrust enforcement. Hear from decision-makers and experts who are shaping the competition policy landscape, and engage in insightful… Read More

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