Price asymmetry in the International Wheat Market

Most wheat exports are accounted for by a limited number of countries with different policy regimes and specializing, for the most part, in particular classes of wheat. Under these circumstances, there is likely to be considerable interaction among the major exporting countries in the determination of wheat prices. In this paper, price linkages between the US. and other exporting countries (Canada, the European Union, Argentina and Australia) in the would wheat market are investigated. After determining that the direction of causality is from U.S. prices to the prices of other exporting countries, the nature of the price linkages is studied. The results suggest that the major exporting countries respond asymmetrically to U.S. price changes. The degree of asymmetry differs from one exporting country to another. Argentina and the European Union show greater response to falling prices than to rising prices, while the opposite is true for Canada and Australia.