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Trade flows in a spatial oligopoly: gravity fits well, but what does it explain?

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  • Alberto Salvo

Abstract

Large distance and border effects on trade flows in some industries may result from the collusive division of geographic markets. In the Brazilian cement industry, traditional gravity equations fit the data well, yet limited regional flows are due to firms' strategic behaviour. Thanks to a unique institutional setting and an unusually rich data set, I directly control for trade costs, which - despite their importance - cannot account for the observed segmentation of local markets at current prices. The paper highlights how collusive behaviour can magnify the effects of distance, as firms use geography to coordinate on higher prices and less cross-hauling.

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  • Alberto Salvo, 2010. "Trade flows in a spatial oligopoly: gravity fits well, but what does it explain?," Canadian Journal of Economics, Canadian Economics Association, vol. 43(1), pages 63-96, February.
    • Handle: RePEc:cje:issued:v:43:y:2010:i:1:p:63-96
    DOI: 10.1111/j.1540-5982.2009.01564.x
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    1. Bhattacharjea, Aditya & Sinha, Uday Bhanu, 2015. "Multi-market collusion with territorial allocation," International Journal of Industrial Organization, Elsevier, vol. 41(C), pages 42-50.
    2. Mireille S. Ntsama Etoundi, 2015. "Impact de la rente pétrolière sur la demande des pays frontaliers du Cameroun," CERDI Working papers halshs-01027500, HAL.
    3. Bruce Cater & Byron Lew, 2018. "The impact of climate on the law of one price: A test using North American food prices from the 1920s," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 51(4), pages 1191-1220, November.
    4. Matthias Hunold & Kai Hüschelrath & Ulrich Laitenberger & Johannes Muthers, 2020. "Competition, Collusion, and Spatial Sales Patterns: Theory and Evidence," Journal of Industrial Economics, Wiley Blackwell, vol. 68(4), pages 737-779, December.
    5. Mireille NTSAMA ETOUNDI, 2014. "Impact de la rente pétrolière sur la demande des pays frontaliers du Cameroun," Working Papers 201417, CERDI.
    6. A. Kerem Cosar & Paul L. E. Grieco & Felix Tintelnot, 2015. "Borders, Geography, and Oligopoly: Evidence from the Wind Turbine Industry," The Review of Economics and Statistics, MIT Press, vol. 97(3), pages 623-637, July.
    7. Roux, Catherine & Santos-Pinto, Luís & Thöni, Christian, 2016. "Home bias in multimarket Cournot games," European Economic Review, Elsevier, vol. 89(C), pages 361-371.

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    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • F12 - International Economics - - Trade - - - Models of Trade with Imperfect Competition and Scale Economies; Fragmentation

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