Pareto Improving Price Regulation When the Asset Market Is Incomplete

P. Jean-Jacques Herings and Heracles M. Polemarchakis
Additional contact information
Heracles M. Polemarchakis: CORE, Universite Catholique de Louvain

No 1210, Cowles Foundation Discussion Papers from Cowles Foundation for Research in Economics, Yale University

Abstract: When the asset market is incomplete, competitive equilibria are constrained suboptimal, which provides a scope for pareto improving interventions. Price regulation can be such a pareto improving policy, even when the welfare effects of rationing are taken into account. An appealing aspect of price regulation is that it that it operates anonymously on market variables. Fix-price equilibria exist under weak assumptions. Such equilibria permit a competitive analysis of an economy with an incomplete asset market that is out of equilibrium. Arbitrage opportunities may arise: with three or more assets actively traded, an individual may hold an arbitrage portfolio at equilibrium. The local existence of fix-price equilibrium for prices that are almost competitive may fail for robust examples. Under necessary and sufficient conditions for the local existence of fix-price equilibria, Pareto improving price regulation is generically possible.

Keywords: Incomplete asset market; fix-price equilibria; Pareto improvement (search for similar items in EconPapers)
JEL-codes: D45 D52 D60 (search for similar items in EconPapers)
Pages: 42 pages
Date: 1999-02
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

Published in Economic Theory (2005), 25(1): 135-154

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Related works:
Chapter: Pareto Improving Price Regulation when the Asset Market is Incomplete (2006)
Journal Article: Pareto improving price regulation when the asset market is incomplete (2005)
Working Paper: Pareto Improving Price Regulation When the Asset Market is Incomplete (2003)
Working Paper: Pareto Improving Price Regulation when the Asset Market Is Incomplete (2003)
Working Paper: Pareto improving price regulation when the asset market is incomplete (2000)
Working Paper: Pareto Improving Price Regulation When the Asset Market is Incomplete (2000)
Working Paper: Pareto improving price regulation when the asset market is incomplete (2000)
Working Paper: Pareto Improving Price Regulation when the Asset Market is Incomplete (1999)
Working Paper: Pareto Improving Price Regulation when the Asset Market is Incomplete (1999)
Working Paper: Pareto improving price regulation when the asset market is incomplete (1998)
Working Paper: Pareto Improving Price Regulation When the Asset Market is Incomplete (1998)
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