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On the Measurement of Market Share Mobility and Entry


  • Cable, J.R.


Static concentration measures neglect dynamic changes in market structure entirely, yet the expectation of lost market share, based on the past and current mobility of market shares in an industry, may be an important part of the competitive forces acting on the firm and affecting its behaviour. This note draws out the similarity between market share and new entry and proposes new, linked measures of both, enabling these additional dimensions of market structure to be incorporated in empirical work.

Suggested Citation

  • Cable, J.R., 1983. "On the Measurement of Market Share Mobility and Entry," The Warwick Economics Research Paper Series (TWERPS) 230, University of Warwick, Department of Economics.
  • Handle: RePEc:wrk:warwec:230

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    References listed on IDEAS

    1. Wilson, Charles A, 1979. "Anticipated Shocks and Exchange Rate Dynamics," Journal of Political Economy, University of Chicago Press, vol. 87(3), pages 639-647, June.
    2. Brock, William A., 1975. "A simple perfect foresight monetary model," Journal of Monetary Economics, Elsevier, vol. 1(2), pages 133-150, April.
    3. Krugman, Paul, 1979. "A Model of Balance-of-Payments Crises," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 11(3), pages 311-325, August.
    4. Blanchard, Olivier Jean & Kahn, Charles M, 1980. "The Solution of Linear Difference Models under Rational Expectations," Econometrica, Econometric Society, vol. 48(5), pages 1305-1311, July.
    5. Dornbusch, Rudiger & Fischer, Stanley, 1980. "Exchange Rates and the Current Account," American Economic Review, American Economic Association, vol. 70(5), pages 960-971, December.
    6. Dornbusch, Rudiger, 1976. "Expectations and Exchange Rate Dynamics," Journal of Political Economy, University of Chicago Press, vol. 84(6), pages 1161-1176, December.
    7. Flood, Robert P & Garber, Peter M, 1980. "Market Fundamentals versus Price-Level Bubbles: The First Tests," Journal of Political Economy, University of Chicago Press, vol. 88(4), pages 745-770, August.
    8. Olivier Jean Blanchard, 1980. "The Monetary Mechanism in the Light of Rational Expectations," NBER Chapters,in: Rational Expectations and Economic Policy, pages 75-116 National Bureau of Economic Research, Inc.
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