Theoretical basis for a method of distribution of market share changes in international trade

Chami's method for calculating how much of an exporter's market share change can be attributed to each competitor has regularly been applied in the literature, but it has not been related to any theory yet. Here, an attempt is made to examine the trade models that can provide the theoretic...

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Veröffentlicht in:Revista de economia contemporânea 2010-12, Vol.14 (3), p.499-514
1. Verfasser: Batista, J. Chami
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description Chami's method for calculating how much of an exporter's market share change can be attributed to each competitor has regularly been applied in the literature, but it has not been related to any theory yet. Here, an attempt is made to examine the trade models that can provide the theoretical foundations for the method, clarifying the assumptions underlying its results. It is shown that the method is consistent with most of the main trade models found in the literature. O método desenvolvido por Chami para distribuir as participações de cada país exportador entre seus competidores em um determinado mercado tem sido aplicado na literatura, mas ainda não foi associado a qualquer teoria. Este artigo procura examinar os modelos de comércio que podem oferecer os fundamentos teóricos para o método, clarificando as suposições necessárias aos seus resultados. Mostra-se que o método é consistente com a maioria dos principais modelos de comércio encontrados na literatura.
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subjects Competition
Economic analysis
Economic theory
ECONOMICS
Exports
Growth rate
International trade
Market shares
Suppliers
title Theoretical basis for a method of distribution of market share changes in international trade
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