Loughborough University
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Collusive price rigidity under price-matching punishments

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conference contribution
posted on 2015-02-25, 10:02 authored by Luke GarrodLuke Garrod
By analysing an infinitely repeated game where unit costs alternate stochastically between low and high states and where firms follow a price-matching punishment strategy, we demonstrate that the best collusive prices are rigid over time when the two cost levels are sufficiently close. This provides game theoretic support for the results of the kinked demand curve. In contrast to the kinked demand curve, it also generates predictions regarding the level and the determinants of the best collusive price, which in turn has implications for the corresponding collusive profits. The relationships between such price rigidity and the expected duration of a high-cost phase, the degree of product differentiation, and the number of firms in the market are also investigated.


The support of the Economic and Social Research Council (UK) is gratefully acknowledged.



  • Business and Economics


  • Economics

Published in

International Industrial Organization Conference


1 - 31 (31)


GARROD, L., 2011. Collusive price rigidity under price-matching punishments. 9th Annual International Industrial Organization Conference, Boston, USA, April 24th-26th 2015, 31pp.


  • AM (Accepted Manuscript)

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This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

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This is a conference paper.


  • en


Boston, USA