Econic Partners today announced the launch of its International Arbitration practice, marking a significant milestone in the firm’s continued global expansion. The launch is accompanied by the opening of offices in Miami and Buenos Aires, and the appointment of three leading valuation and arbitration experts, Gustavo De Marco, Ariel Medvedeff, and Andrés Casserly.
The International Arbitration practice will focus on commercial, investor-state, and multi-jurisdictional disputes, addressing growing client demand for sophisticated cross-border dispute resolution across any industry. The addition of these highly regarded and ranked experts enhances Econic Partners’ ability to deliver rigorous economic and financial analysis in high-stakes proceedings before leading arbitral institutions.
The expansion into Miami and Buenos Aires underscores Econic Partners’ commitment to strengthening its presence in arbitration hubs across the Americas, building on the firm’s extensive experience supporting matters across North and Latin America, EMEA, and other global markets.
Founding Partner Jon Orszag commented, “We are thrilled to welcome Andrés, Gus, and Ari to Econic Partners. Each is a renowned arbitration expert, and we look forward to harnessing their entrepreneurial spirits to continue to build the best economic consulting firm in the world.”
About Gustavo De Marco
Gustavo De Marco is a Partner and co-head of the Miami office at Econic Partners. Mr. De Marco specializes in economic and financial analysis, valuation of businesses and other assets, and the assessment of damages in the context of dispute resolution and litigation support.
Mr. De Marco has provided expert testimony, led teams and participated in more than 70 arbitration proceedings in various forums, including ICSID, ICC, PCA, UNCITRAL, SCC and other leading arbitral institutions. In addition, he has worked extensively for nearly 20 years, advising companies and sovereign states in relation to regulated and non-regulated activities, such as infrastructure, oil and gas, electricity, and others. Full bio here.
About Ariel Medvedeff
Ariel Medvedeff, CFA is a Partner and co-head of the Miami office at Econic Partners. Mr. Medvedeff specializes in expert economic, financial, regulatory, and damages advice in complex international treaty and commercial arbitration and litigation matters. With more than 18 years of experience, Mr. Medvedeff has been involved in over 70 disputes, providing expert testimony and expert analysis before leading arbitral institutions, including ICSID, ICC, LCIA, and the PCA.
Recognized as a Thought Leader and Expert Witness in Lexology’s Arbitration Index, Mr. Medvedeff’s experience spans a broad range of industries, including energy, construction, hospitality and real estate, agriculture, mining, transport concessions, telecommunications, and airlines. Full bio here.
About Andrés Casserly
Andrés Casserly is a Partner and head of the Buenos Aires office at Econic Partners. Recognized as a Thought Leader in Lexology’s Arbitration Index, Mr. Casserly has more than 15 years’ experience in economic and regulatory analysis, with deep expertise in business and asset valuation, and the assessment of damages in international and commercial arbitrations.
Mr. Casserly has provided expert testimony, led multidisciplinary teams, and participated in more than 50 treaty and commercial disputes before multiple forums, including ICSID, UNCITRAL, ICC and the PCA, among others. In addition, his experience spans across a wide range of industries, including oil and gas, mining, power generation and distribution, road and railroad concessions, steel products manufacturing, logistics, consumer goods, forestry, real estate, and hospitality, with a particular focus on developing countries. Full bio here
About Econic Partners
Econic Partners is a leading economic consulting firm focused on complex antitrust, regulatory, policy, financial, and litigation matters. It advises corporations, law firms, governments, and financial institutions, providing expert guidance grounded in intellectual excellence, experience, and effectiveness in legal and regulatory processes.
Founded in January 2025, Econic has more than 300 experts and consultants serving our global client base from offices in the Bay Area, Beijing, Boston, Brussels, Buenos Aires, Chicago, Copenhagen, London, Los Angeles, Madrid, Miami, New York, Paris, Sydney, and Washington, D.C.
