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Single-product versus uniform SSNIPs

Author

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  • Daljord, Øystein
  • Sørgard, Lars

Abstract

It is common to apply a SSNIP test with a uniform price increase on all products in the candidate market. We show that in situations with asymmetries - for example variations in revenues - a uniform SSNIP test may suggest that the relevant market should include more products even though it could be profitable to increase the price of only one product in the candidate market. Our results are illustrated with some findings from a survey in a local grocery market.

Suggested Citation

  • Daljord, Øystein & Sørgard, Lars, 2011. "Single-product versus uniform SSNIPs," International Review of Law and Economics, Elsevier, vol. 31(2), pages 142-146, June.
  • Handle: RePEc:eee:irlaec:v:31:y:2011:i:2:p:142-146
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    References listed on IDEAS

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    1. Epstein, Roy J. & Rubinfeld, Daniel, 2001. "Merger Simulation: A Simplified Approach with New Applications," Department of Economics, Working Paper Series qt1c65s24r, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
    2. Rubinfeld, Daniel L. & Epstein, Roy J., 2001. "Merger Simulation: A Simplified Approach with New Applications," Competition Policy Center, Working Paper Series qt2sq9s8c8, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
    3. Epstein, Roy J. & Rubinfeld, Daniel L., 2001. "Merger Simulation: A Simplified Approach with New Applications," Department of Economics, Working Paper Series qt9jt389nb, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
    4. Epstein, Roy J. & Rubinfeld, Daniel, 2012. "Merger Simulation: A Simplified Approach with New Applications," Department of Economics, Working Paper Series qt2k9116ph, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
    5. Farrell Joseph & Shapiro Carl, 2010. "Antitrust Evaluation of Horizontal Mergers: An Economic Alternative to Market Definition," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 10(1), pages 1-41, March.
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