Cournot Oligopoly with Information Sharing

Lode Li

RAND Journal of Economics, 1985, vol. 16, issue 4, 521-536

Abstract: This article examines the incentives for Cournot oligopolists to share information about a common parameter or about firm-specific parameters. We assume that the private information that firms receive has equal accuracy and obeys a linear conditional expectation property. We find that when the uncertainty is about a firm-specific parameter, perfect revelation is the unique equilibrium. When the uncertainty is about a common parameter, no information sharing is the unique equilibrium. But the nonpooling equilibrium converges to the situation where the pooling strategies are adopted as the total amount of information increases. Hence, the efficiency is achieved in the competitive equilibrium as the number of firms becomes large.

Date: 1985
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