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Endogenous Public Information and Welfare in Market Games

Xavier Vives ()

No 413, 2016 Meeting Papers from Society for Economic Dynamics

Abstract: This paper performs a welfare analysis of markets with private information in which agents condition on prices in the rational expectations tradition. Price-contingent strategies introduce two externalities in the use of private information: a pecuniary externality and a learning externality. The pecuniary externality induces agents to put too much weight on private information and in the standard case, when the allocation role of the price prevails over its informational role, overwhelms the learning externality which impinges in the opposite way. The price may be very informative but at the cost of an excessive dispersion of the actions of agents. The welfare loss at the market solution may be increasing in the precision of private information. The analysis provides insights into optimal business cycle policy and a rationale for a Tobin-like tax for financial transactions.

New Economics Papers: this item is included in nep-mic
Date: 2016
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Related works:
Journal Article: Endogenous Public Information and Welfare in Market Games (2017) Downloads
Working Paper: Endogenous Public Information and Welfare in Market Games (2011) Downloads
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Persistent link: https://EconPapers.repec.org/RePEc:red:sed016:413

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