Portrait of Adriana Nieto Acostamadiedo

Adriana Nieto Acostamadiedo : Principal

Adriana is part of Oxera’s Commercial Disputes & Arbitration team, as well as its Competition team. She co-heads our team in Spain and has extensive experience in damages quantification, antitrust litigation, and performing in-depth market analyses in the context of disputes and European competition policy and regulation.

She has advised clients on a wide range of matters across various sectors, including financial services, insurance, automotive, telecoms, cash-in-transit, and energy, among others. As a consultant, she provides clients with practical applications of economic analysis tools.

She has also analysed the workings of different markets, designing and implementing impact evaluation and forecasting techniques to assess a wide set of issues. Adriana has several years’ experience providing expert-witness testimony in court across various types of litigation, including arbitration disputes.

Before joining Oxera, Adriana worked at KPMG, where she held a leading role within the Competition Economics team in Spain. Prior to this, she worked at Compass Lexecon, where she focused on the design and implementation of econometric exercises across a broad range of competition cases. She has also worked with leading think tanks in Colombia, providing consultancy on various macroeconomic and financial matters.

Adriana speaks English, and Spanish.

Tel: +34 91 019 3574

Adriana's specialisms include:

Selected
professional experience

  • Assessed the impact of promotional activities on sales in the soft drinks market by means of econometric techniques, in the context of an administrative proceeding between the Spanish Tax Agency and our client (2024)

  • Acting as economic expert for one of the main car manufacturers in Spain in relation to claim proceedings against the firm in the context of an information exchange infringement sanctioned by the competition authority (2022–)

  • Studying market dynamics and assessing the potential market impact of an alleged information exchange in the insurance market (2010)

  • Performed an assessment on the existence of competition restrictions potentially arising from a data-sharing platform in the car insurance market (2022–25)

  • Assessed the expected merger efficiencies and the likeliness of their pass-on to consumers in the context of a merger between two of the main Spanish banks (2020)

  • Expert Witness in the context of a dispute against the Spanish government, held in the Spanish High Court regarding highway infrastructure concessions (2020)

Selected
publications

  • Nieto Acostamadiedo, A. (2007), ‘Financial Deepening in Colombia, Capital Flows and Banking Sector Controls: An Econometric Analysis’, in R. Steiner, Salazar, N. and Clavijo, I., Helping Reforms Deliver Growth: The case of Colombia.

  • Nieto Acostamadiedo, A. and Salamanca, C. (2007), ‘SME Credit securitization: gaining Access to financial resources’, Carta Financiera. May.

  • Nieto Acostamadiedo, A. (2006’), ‘Risk aversion and volatility in emerging markets’, Carta Financiera, November.

Qualifications

  • MSc in Finance, Barcelona GSE

  • MA in Economics and Quantitative Methods, Universidad de los Andes, Colombia

  • BA Economics, Universidad de los Andes, Colombia