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Home » News Articles » What Econ One Has Been Up To in the International Arbitration Space

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Jean-Marie van der Elst

Managing Director
  • jmvanderelst@econone.com
Education

D.B.A.-International Business & Economics, Nathan Bisk College of Business, Florida Institute of Technology, Melbourne, FL. 2019.

SEP- Senior Executive Program, Columbia University, New York. 1996.

M.A.-  International Economics & Corporate Finance, Nelson Mandela University, Port Elizabeth, SA. 1989.

B.A.-Economics & Psychology, University of Cape Town, SA. 1980.

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ICSID

CPA

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Rafael Pereyra Lago

Director
  • rpereyralago@econone.com
Education

Instituto de Empresa Business School (IE), Madrid, España - MBA Corporate Finance & Marketing

Universidad Nelson Mandela, Port Elizabeth, Sudáfrica - MSC Marine Biology

Universidad Nelson Mandela, Port Elizabeth, Sudáfrica - BSC (Hons)

Universidad de la República, Montevideo, Uruguay – Lic. Oceanografía

2023 - Present DIRECTOR EconOne Research Inc.

International Arbitration Practice Area: forensic expert in socioeconomic, environmental, financial and economic matters, providing expert analysis and reports on damage valuations.

2018 – 2023 TAS DIRECTOR

Global Investigations and Corporate Finance Practices (LATAM): providing analysis and expert reports on economic, financial and socioeconomic damages. Authored and defended reports and provided expert testimony in international arbitration tribunals. Issues defended include public-private partnership (PPP) mass transit infrastructure projects.

2014-2017 DIRECTOR International Business Development – Ricoh Europe Ltd, London, UK

2011-2014 HEAD of IT and Corporate Cloud Services / Verizon Business, Amsterdam, The Netherlands.

2008-2011 CONSULTING Practice Director, Professional Services / Atos EMEA, London, UK

2007-2008 PRINCIPAL CONSULTANT / Quint Wellington Redwood ME, Riyadh, Abu Dhabi, KSA/UAE

2004-2007 ICT MANAGER / Randstad UK Plc, United Kingdom

2000-2004 PROGRAM MANAGER / Hewlett-Packard EMEA, London, UK

1997-1999 PROJECT MANAGER - EMC2 (Data General UK) Ltd, EMEA IM Group, London, UK

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Marian Portero Collado

Director
  • mportero@econone.com
Education

2024 – 2024 Harvard Business School, Cambridge, MA Sustainable Investing Program

1993 – 1994 London Business School, London. Corporate Finance Program.

1986 – 1988 School of Industrial Organization (EOI), Madrid, Grenoble, Master in Business Administration (MBA).

1981 – 1986 Autonomous University of Madrid, Spain. Degree in Economics and Business Administration.

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PCA

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Investment Treaty Arbitration
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Anti-Money Laundering Investigations
Money Laundering Investigations
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Damages Analysis
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June 25, 2025

What Econ One Has Been Up To in the International Arbitration Space

This spring, Econ One’s International Arbitration team traveled to Madrid, Spain, and London, UK, to participate in key industry events and working groups focused on the future of dispute resolution.

CIAM-CIAR Working Groups – Madrid (May 30–31)
Marian Portero Collado joined the expert group on “Lost Profits vs. Loss of Opportunity,” collaborating with leading economists on a paper in development. We thank José María Alonso and the CIAM team for supporting these important discussions.

CEIA-40 & XIX CEIA Congress – Madrid (June 1–3)
As a Gold Sponsor, we engaged in vibrant conversations on AI, delay, res judicata, and the future of arbitration. Highlights included the announcement of ICCA 2026 in April 2026 in Madrid .

LIDW25 – London (June 4–6)
Rafael Pereyra Lago presented at our co-hosted event with Freeths on ESG in Arbitration, alongside global experts. The panel explored how ESG is reshaping arbitration practice and expectations.

Thanks to all organizers and attendees who made these events impactful.

Services: International Arbitration
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