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Normative Properties Of Stock Market Equilibrium With Moral Hazard

  • Martine Quinzii
  • Michael Magill

    (Department of Economics, University of California Davis)

This paper presents a model of stock market equilibrium with a finite number of corporations and studies its normative properties. Each firm is run by a manager whose effort is unobservable and influences the probabilities of the firm?s outcomes. The Board of Directors of each firm chooses an incentive contract for the manager which maximizes the firm?s market value. With a finite number of firms, the equilibrium is constrained Pareto optimal only when investors are risk neutral and firms? outcomes are independent. The inefficiencies which arise when investors are risk averse, or when firms are influenced by a common shock, are studied and it is shown that under reasonable assumptions there is under investment in effort in equilibrium. The inefficiencies exist when the firms are not completely negligible, as is typical of the large corporations with dispersed ownership traded on public exchanges in the US. In the idealized case where firms of each type are replicated and replaced by a continuum of firms of each type with independent outcomes, the inefficiencies disappear.

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Paper provided by University of California, Davis, Department of Economics in its series Working Papers with number 82.

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Length: 36
Date of creation: 01 Jan 1900
Date of revision:
Handle: RePEc:cda:wpaper:08-2
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  1. Murphy, Kevin J., 1999. "Executive compensation," Handbook of Labor Economics, in: O. Ashenfelter & D. Card (ed.), Handbook of Labor Economics, edition 1, volume 3, chapter 38, pages 2485-2563 Elsevier.
  2. Pradeep Dubey & John Geanakoplos, 2001. "Competitive Pooling: Rothschild-Stiglitz Reconsidered," Cowles Foundation Discussion Papers 1346, Cowles Foundation for Research in Economics, Yale University.
  3. Pradeep Dubey & John Geanakoplos & Martin Shubik, 2001. "Default and Punishment in General Equilibrium," Cowles Foundation Discussion Papers 1304, Cowles Foundation for Research in Economics, Yale University.
  4. Bisin, Alberto & Gottardi, Piero, 1997. "General Competitive Analysis with Asymmetric Information," Working Papers 97-38, C.V. Starr Center for Applied Economics, New York University.
  5. Grossman, Sanford J & Hart, Oliver D, 1979. "A Theory of Competitive Equilibrium in Stock Market Economies," Econometrica, Econometric Society, vol. 47(2), pages 293-329, March.
  6. Edward C Prescott & Robert M Townsend, 2010. "Pareto Optima and Competitive Equilibria With Adverse Selection and Moral Hazard," Levine's Working Paper Archive 2069, David K. Levine.
  7. Jewitt, Ian, 1988. "Justifying the First-Order Approach to Principal-Agent Problems," Econometrica, Econometric Society, vol. 56(5), pages 1177-90, September.
  8. Alberto Bennardo & Pierre-Andre Chiappori, 2003. "Bertrand and Walras Equilibria under Moral Hazard," Journal of Political Economy, University of Chicago Press, vol. 111(4), pages 785-817, August.
  9. Michael Magill & Martine Quinzii, 2006. "Common Shocks and Relative Compensation," Annals of Finance, Springer, vol. 2(4), pages 407-420, October.
  10. Magill, Michael & Shafer, Wayne, 1991. "Incomplete markets," Handbook of Mathematical Economics, in: W. Hildenbrand & H. Sonnenschein (ed.), Handbook of Mathematical Economics, edition 1, volume 4, chapter 30, pages 1523-1614 Elsevier.
  11. Dilip Mookherjee, 1984. "Optimal Incentive Schemes with Many Agents," Review of Economic Studies, Oxford University Press, vol. 51(3), pages 433-446.
  12. Paul R. Milgrom, 1979. "Good Nevs and Bad News: Representation Theorems and Applications," Discussion Papers 407R, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  13. Kocherlakota, Narayana R., 1998. "The effects of moral hazard on asset prices when financial markets are complete," Journal of Monetary Economics, Elsevier, vol. 41(1), pages 39-56, February.
  14. Rogerson, William P, 1985. "The First-Order Approach to Principal-Agent Problems," Econometrica, Econometric Society, vol. 53(6), pages 1357-67, November.
  15. Steinar Ekern & Robert Wilson, 1974. "On the Theory of the Firm in an Economy with Incomplete Markets," Bell Journal of Economics, The RAND Corporation, vol. 5(1), pages 171-180, Spring.
  16. Magill, Michael & Quinzii, Martine, 2002. "Capital market equilibrium with moral hazard," Journal of Mathematical Economics, Elsevier, vol. 38(1-2), pages 149-190, September.
  17. Grossman, Sanford J & Hart, Oliver D, 1983. "An Analysis of the Principal-Agent Problem," Econometrica, Econometric Society, vol. 51(1), pages 7-45, January.
  18. Edward C Prescott & Robert M Townsend, 1997. "General Competitive Analysis in an Economy with Private Information," Levine's Working Paper Archive 1578, David K. Levine.
  19. Piero Gottardi & Alberto Bisin & Adriano Rampini, 2007. "Managerial Hedging and Portfolio Monitoring," Working Papers 2007_24, Department of Economics, University of Venice "Ca' Foscari".
  20. Viral V. Acharya & Alberto Bisin, 2009. "Managerial hedging, equity ownership, and firm value," RAND Journal of Economics, RAND Corporation, vol. 40(1), pages 47-77.
  21. Luca, PANACCIONE, 2006. "Inefficiency of competitive equilibrium with hidden action and financial markets," Discussion Papers (ECON - Département des Sciences Economiques) 2006049, Université catholique de Louvain, Département des Sciences Economiques.
  22. Marcos B. Lisboa, 2001. "Moral hazard and general equilibrium in large economies," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 18(3), pages 555-575.
  23. Marco LiCalzi & Sandrine Spaeter, 2003. "Distributions for the first-order approach to principal-agent problems," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 21(1), pages 167-173, 01.
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