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Intermediated Trade

  • Pol Antràs
  • Arnaud Costinot

This paper develops a simple model of international trade with intermediation. We consider an economy with two islands and two types of agents, farmers and traders. Farmers can produce two goods, but in order to sell these goods in centralized (Walrasian) markets, they need to be matched with a trader, and this entails costly search. In the absence of search frictions, our model reduces to a standard Ricardian model of trade. We use this simple model to contrast the implications of changes in the integration of Walrasian markets, which allow traders from different islands to exchange their goods, and changes in the access to these Walrasian markets, which allow farmers to trade with traders from different islands. We find that intermediation always magnifies the gains from trade under the former type of integration, but leads to more nuanced welfare results under the latter, including the possibility of aggregate losses. These welfare losses may be circumvented, however, through policies that discriminate against foreign traders in a way that minimizes the margins charged by domestic traders.

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File URL: http://www.nber.org/papers/w15750.pdf
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 15750.

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Date of creation: Feb 2010
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Publication status: published as Pol Antràs & Arnaud Costinot, 2011. "Intermediated Trade," The Quarterly Journal of Economics, Oxford University Press, vol. 126(3), pages 1319-1374.
Handle: RePEc:nbr:nberwo:15750
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