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Are Incomlete Markets Able to Achieve Minimal Efficiency?

We consider economies with incomplete markets, one good per state, two periods, t=0,1, private ownership of initial endowments, a single firm, and no assets other than shares in this firm. In Dierker, Dierker, Grodal (2002), we give an example of such an economy in which all market equilibria are constrained inefficient. In this paper, we weaken the concept of constrained efficiency by taking away the planner's right to determine consumers' investments. An allocation is called minimally constrained efficient if a planner, who can only determine the production plan and the distribution of consumption at t=0, cannot find a Pareto improvement. We present an example with arbitrarily small income effects in which no market equilibrium is minimally constrained efficient.

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File URL: http://homepage.univie.ac.at/Papers.Econ/RePEc/vie/viennp/vie0212.pdf
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Paper provided by University of Vienna, Department of Economics in its series Vienna Economics Papers with number 0212.

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Date of creation: Nov 2002
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Handle: RePEc:vie:viennp:0212
Contact details of provider: Web page: http://www.univie.ac.at/vwl

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  1. Harold L. Cole & Edward C. Prescott, 1996. "Valuation equilibria with clubs," Staff Report 174, Federal Reserve Bank of Minneapolis.
  2. Nicolas Gravel, 2001. "On the difficulty of combining actual and potential criteria for an increase in social welfare," Economic Theory, Springer, vol. 17(1), pages 163-180.
  3. DHILLON, Amrita & MERTENS, Jean-François, 1993. "Relative Utilitarianism," CORE Discussion Papers 1993048, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  4. John Geanakoplos & Michael Magill & Martine Quinzii & J. Dreze, 1988. "Generic Inefficiency of Stock Market Equilibrium When Markets Are Incomplete," Cowles Foundation Discussion Papers 863, Cowles Foundation for Research in Economics, Yale University.
  5. Egbert Dierker & Hildegard Dierker & Birgit Grodal, 2000. "Nonexistence of Constrained Efficient Equilibria when Markets are Incomplete," CIE Discussion Papers 2000-07, University of Copenhagen. Department of Economics. Centre for Industrial Economics.
  6. Grossman, Sanford J., 1977. "A characterization of the optimality of equilibrium in incomplete markets," Journal of Economic Theory, Elsevier, vol. 15(1), pages 1-15, June.
  7. Prescott, Edward C & Townsend, Robert M, 1984. "General Competitive Analysis in an Economy with Private Information," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 25(1), pages 1-20, February.
  8. Guesnerie, Roger, 1975. "Pareto Optimality in Non-Convex Economies," Econometrica, Econometric Society, vol. 43(1), pages 1-29, January.
  9. DeMarzo, Peter M, 1993. "Majority Voting and Corporate Control: The Rule of the Dominant Shareholder," Review of Economic Studies, Wiley Blackwell, vol. 60(3), pages 713-34, July.
  10. Petra Geraats & Hans Haller, 1998. "Shareholders' choice," Journal of Economics, Springer, vol. 68(2), pages 111-135, June.
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