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Welfare-Enhancing Collusion in the Presence of a Competitive Fringe

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Author Info
Juan Pablo Montero () (Instituto de Economía. Pontificia Universidad Católica de Chile.)
Juan Ignacio Guzmán

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Abstract

Following the structure of many commodity markets, we consider a few large firms and a competitive fringe of many small suppliers choosing quantities in an infinite-horizon setting subject to demand shocks. We show that a collusive agreement among the large firms may not only bring an output contraction but also an output expansion (relative to the noncollusive output level). The latter occurs during booms, when the fringe’s market share is more important, and is due to the strategic substitutability of quantities (we will never observe an output-expanding collusion in a price-setting game). In addition and depending on the fringe’s market share the time at which maximal collusion is most difficult to sustain can be either at booms or recessions.

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Paper provided by Instituto de Economía. Pontificia Universidad Católica de Chile. in its series Documentos de Trabajo with number 298.

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Date of creation: 2005
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Handle: RePEc:ioe:doctra:298

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  14. Robert H. Porter, 1983. "A Study of Cartel Stability: The Joint Executive Committee, 1880-1886," Bell Journal of Economics, The RAND Corporation, vol. 14(2), pages 301-314, Autumn. [Downloadable!] (restricted)
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  19. Fudenberg, Drew & Tirole, Jean, 1984. "The Fat-Cat Effect, the Puppy-Dog Ploy, and the Lean and Hungry Look," American Economic Review, American Economic Association, vol. 74(2), pages 361-66, May. [Downloadable!] (restricted)
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