Joseba Martinez

Joseba Martinez is an Assistant Professor of Economics at London Business School and a CEPR Research Affiliate. His research studies how technology shapes productivity, growth, and the response of the economy to policy, and how information asymmetry in financial markets affects investment and growth. Recent work examines the cost of the green energy transition when fossil-fuel-dependent capital cannot be easily repurposed, the financial-market valuation of firms exposed to that transition, the role of government-funded innovation in sustaining postwar U.S. growth, the macroeconomic effects of fiscal policy, and the labour-market consequences of automation and AI. He has also developed natural-language methods on patent data to measure technical change and link it to aggregate productivity. His published research, in Review of Economic Studies, Journal of International Economics, AEJ: Macroeconomics, examines the design of bank stress tests, capital-market integration in monetary unions, and the role of technology diffusion and R&D in shaping business cycle dynamics.

He teaches Macroeconomics to MBA and EMBA students and PhD Macroeconomics to doctoral candidates at London Business School. Beyond his academic role, he has consulted for a New York-based investment fund and served as a visiting scholar at the International Monetary Fund. Dr Martinez brings substantial professional experience to his academic work. Before beginning his PhD, he worked as a trader at ABN AMRO London and held the position of senior manager at the European Bank for Reconstruction and Development, where he developed expertise in financial markets that informs his current research and teaching.