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Sequential versus simultaneous market

Author

Listed:
  • Haldrup, Niels

    (Department of Economics, Copenhagen Business School)

  • Møllgaard, Peter

    (Department of Economics, Copenhagen Business School)

  • Nielsen, Claus Kastberg

    (Department of Economics, Copenhagen Business School)

Abstract

Delineation of the relevant market forms a pivotal part of most antitrust cases. The standard approach is sequential. First the product market is delineated, then the geographical market is defined. Demand and supply substitution in both the product dimension and the geographical dimension will normally be stronger than substitution in either dimension. By ignoring this one might decide first to define products narrowly and then to define the geographical extent narrowly ignoring the possibility of a diagonal substitution. These reflections are important in the empirical delineation of product and geographical markets. Using a unique data set for prices of Norwegian and Scottish salmon, we propose a methodology for simultaneous market delineation and we demonstrate that compared to a sequential approach conclusions will be reversed.

Suggested Citation

  • Haldrup, Niels & Møllgaard, Peter & Nielsen, Claus Kastberg, 2005. "Sequential versus simultaneous market," Working Papers 02-2005, Copenhagen Business School, Department of Economics.
    • Handle: RePEc:hhs:cbsnow:2005_002
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    References listed on IDEAS

    as
    1. Stigler, George J & Sherwin, Robert A, 1985. "The Extent of the Market," Journal of Law and Economics, University of Chicago Press, vol. 28(3), pages 555-585, October.
      • Stigler, George J. & Sherwin, Robert A., 1983. "The Extent of the Market," Working Papers 31, The University of Chicago Booth School of Business, George J. Stigler Center for the Study of the Economy and the State.
    2. Kwiatkowski, Denis & Phillips, Peter C. B. & Schmidt, Peter & Shin, Yongcheol, 1992. "Testing the null hypothesis of stationarity against the alternative of a unit root : How sure are we that economic time series have a unit root?," Journal of Econometrics, Elsevier, vol. 54(1-3), pages 159-178.
    3. Franses, Philip Hans & Haldrup, Niels, 1994. "The Effects of Additive Outliers on Tests for Unit Roots and Cointegration," Journal of Business & Economic Statistics, American Statistical Association, vol. 12(4), pages 471-478, October.
    4. Haldrup, Niels, "undated". "Empirical analysis of price data in the delineation of the relevant geographical market in competition analysis," Economics Working Papers 2003-9, Department of Economics and Business Economics, Aarhus University.
    5. Engle, Robert & Granger, Clive, 2015. "Co-integration and error correction: Representation, estimation, and testing," Applied Econometrics, Russian Presidential Academy of National Economy and Public Administration (RANEPA), vol. 39(3), pages 106-135.
    6. Steen, Frode & Asche, Frank, 2006. "When Anti-Dumping Measures Lead to Increased Market Power: A Case Study of the European Salmon Market," CEPR Discussion Papers 5781, C.E.P.R. Discussion Papers.
    7. Gonzalo, Jesus, 1994. "Five alternative methods of estimating long-run equilibrium relationships," Journal of Econometrics, Elsevier, vol. 60(1-2), pages 203-233.
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    Citations

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    Cited by:

    1. Willem H. Boshoff, 2007. "Stationarity Tests In Geographic Markets: An Application To South African Milk Markets," South African Journal of Economics, Economic Society of South Africa, vol. 75(1), pages 52-65, March.

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    More about this item

    Keywords

    Relevant market; econometric delineation; salmon;
    All these keywords.

    JEL classification:

    • C30 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - General
    • K21 - Law and Economics - - Regulation and Business Law - - - Antitrust Law
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices
    • Q22 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Fishery

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