Pierola Castro, Martha Denisse

Trade and Integration Team, Development Research Group, The World Bank
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International economics, Export development, Firm-level analysis of trade
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Trade and Integration Team, Development Research Group, The World Bank
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Last updated January 31, 2023
Martha Denisse Pierola is an Economist in the Trade and International Integration Unit of the Development Research Group of the World Bank. She has published several papers on export growth and exporter dynamics and co-created the Exporter Dynamics Database –the first-ever global database on exporter growth and dynamics, based on firm-level export data. Her research studies the role of large exporters in driving trade patterns and export growth; and examines how exporter behavior varies with the stage of development. She was the leader of the team conducting the World Bank study on trade, competitiveness and regional integration in Zimbabwe. She has worked on issues related to regionalism, trade costs and trade and productivity. Before joining the World Bank, she worked as an economist for the Peruvian Government (INDECOPI) and also consulted for the private sector and other international organizations. She has a PhD in economics from the Graduate Institute of International Studies in Geneva, Switzerland and a Master of International Law and Economics from the World Trade Institute in Bern, Switzerland.
Citations 89 Scopus

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    Export Superstars
    (MIT Press, 2015-12) Freund, Caroline ; Pierola, Martha Denisse
    We show that very large firms shape country export patterns. Among 32 countries, the top firm on average accounts for 14% of a country’s total (non-oil) exports, and the top five firms make up 30%. These export superstars are also important in the sectoral distribution of exports. Variation in exports from the top firm in a country explains about one-third of the variation in sectoral exports relative to income across countries, and variation in exports from the top five firms explains nearly half. Revealed comparative advantage in a sector can be created by a single firm.