IDEAS home Printed from https://ideas.repec.org/p/cda/wpaper/79.html
   My bibliography  Save this paper

Normative Properties Of Stock Market Equilibrium With Moral Hazard

Author

Listed:
  • Martine Quinzii
  • Michael Magill

    (Department of Economics, University of California Davis)

Abstract

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.

Suggested Citation

  • Martine Quinzii & Michael Magill, 1899. "Normative Properties Of Stock Market Equilibrium With Moral Hazard," Working Papers 79, University of California, Davis, Department of Economics.
  • Handle: RePEc:cda:wpaper:79
    as

    Download full text from publisher

    File URL: https://repec.dss.ucdavis.edu/files/fsLXgS1o5eQojB4uYrPgzTRz/08-2.pdf
    Download Restriction: no
    ---><---

    Other versions of this item:

    References listed on IDEAS

    as
    1. 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.
    2. 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.
    3. J. A. Mirrlees, 1999. "The Theory of Moral Hazard and Unobservable Behaviour: Part I," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 66(1), pages 3-21.
    4. Michael Magill & Martine Quinzii, 2006. "Common Shocks and Relative Compensation," Annals of Finance, Springer, vol. 2(4), pages 407-420, October.
    5. Alberto Bisin & Piero Gottardi & Adriano A. Rampini, 2008. "Managerial Hedging and Portfolio Monitoring," Journal of the European Economic Association, MIT Press, vol. 6(1), pages 158-209, March.
    6. Roy Radner, 1974. "A Note on Unanimity of Stockholders' Preferences among Alternative Production Plans: A Reformulation of the Ekern-Wilson Model," Bell Journal of Economics, The RAND Corporation, vol. 5(1), pages 181-184, Spring.
    7. Pradeep Dubey & John Geanakoplos & Martin Shubik, 2005. "Default and Punishment in General Equilibrium," Econometrica, Econometric Society, vol. 73(1), pages 1-37, January.
    8. Jewitt, Ian, 1988. "Justifying the First-Order Approach to Principal-Agent Problems," Econometrica, Econometric Society, vol. 56(5), pages 1177-1190, September.
    9. PANACCIONE, Luca, 2006. "Inefficiency of competitive equilibrium with hidden action and financial markets," LIDAM Discussion Papers CORE 2006096, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    10. 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.
    11. 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.
    12. 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, January.
    13. 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.
    14. Bisin, A. & Gottardi, P., 1997. "General Competitive Analysis with Asymmetric Information," DELTA Working Papers 97-26, DELTA (Ecole normale supérieure).
    15. Pradeep Dubey & John Geanakoplos, 2002. "Competitive Pooling: Rothschild-Stiglitz Reconsidered," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 117(4), pages 1529-1570.
    16. Dilip Mookherjee, 1984. "Optimal Incentive Schemes with Many Agents," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 51(3), pages 433-446.
    17. Prescott, Edward C & Townsend, Robert M, 1984. "Pareto Optima and Competitive Equilibria with Adverse Selection and Moral Hazard," Econometrica, Econometric Society, vol. 52(1), pages 21-45, January.
    18. James A. Mirrlees, 1976. "The Optimal Structure of Incentives and Authority Within an Organization," Bell Journal of Economics, The RAND Corporation, vol. 7(1), pages 105-131, Spring.
    19. 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.
    20. 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.
    21. Paul R. Milgrom, 1981. "Good News and Bad News: Representation Theorems and Applications," Bell Journal of Economics, The RAND Corporation, vol. 12(2), pages 380-391, Autumn.
    22. Magill, Michael & Quinzii, Martine, 2002. "Capital market equilibrium with moral hazard," Journal of Mathematical Economics, Elsevier, vol. 38(1-2), pages 149-190, September.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Scotchmer, Suzanne & Shannon, Chris, 2019. "Verifiability and group formation in markets," Journal of Economic Theory, Elsevier, vol. 183(C), pages 417-477.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Magill, Michael & Quinzii, Martine, 2008. "Normative properties of stock market equilibrium with moral hazard," Journal of Mathematical Economics, Elsevier, vol. 44(7-8), pages 785-806, July.
    2. Magill, Michael & Quinzii, Martine, 2002. "Capital market equilibrium with moral hazard," Journal of Mathematical Economics, Elsevier, vol. 38(1-2), pages 149-190, September.
    3. Michael Magill & Martine Quinzii, 2005. "An Equilibrium Model of Managerial Compensation," IEPR Working Papers 05.22, Institute of Economic Policy Research (IEPR).
    4. Calcagno, Riccardo & Wagner, Wolf, 2006. "Dispersed initial ownership and the efficiency of the stock market under moral hazard," Journal of Mathematical Economics, Elsevier, vol. 42(1), pages 36-45, February.
    5. Inés Macho-Stadler & David Pérez-Castrillo, 2018. "Moral hazard: Base models and two extensions," Chapters, in: Luis C. Corchón & Marco A. Marini (ed.), Handbook of Game Theory and Industrial Organization, Volume I, chapter 16, pages 453-485, Edward Elgar Publishing.
    6. Michael Magill & Martine Quinzii, 2009. "The probability approach to general equilibrium with production," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 39(1), pages 1-41, April.
    7. Bisin, Alberto; & Gottardi, Piero; & Ruta, Guido, 2014. "Equilibrium corporate finance and intermediation," Economics Working Papers ECO2014/09, European University Institute.
    8. Michael Magill, 2000. "Equity, Options and Efficiency in the Presence of Moral Hazard," Econometric Society World Congress 2000 Contributed Papers 1845, Econometric Society.
    9. Alberto Bisin & Gian Luca Clementi & Piero Gottardi, 2014. "Capital Structure and Hedging Demand with Incomplete Markets," NBER Working Papers 20345, National Bureau of Economic Research, Inc.
    10. Guido Ruta & Piero Gottardi, 2009. "Equilibrium corporate finance," 2009 Meeting Papers 149, Society for Economic Dynamics.
    11. Michael Magill & Martine Quinzii, 2009. "The probability approach to general equilibrium with production," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 39(1), pages 1-41, April.
    12. Kilenthong, Weerachart T. & Townsend, Robert M., 2011. "Information-constrained optima with retrading: An externality and its market-based solution," Journal of Economic Theory, Elsevier, vol. 146(3), pages 1042-1077, May.
    13. Hellwig, Martin F., 2005. "Nonlinear incentive provision in Walrasian markets: a Cournot convergence approach," Journal of Economic Theory, Elsevier, vol. 120(1), pages 1-38, January.
    14. Alexander Karaivanov, 2003. "Financial Contracts and Occupational Choice," Computing in Economics and Finance 2003 25, Society for Computational Economics.
    15. Bloise, Gaetano & Reichlin, Pietro, 2005. "Risk and intermediation in a dual financial market economy," Research in Economics, Elsevier, vol. 59(3), pages 257-279, September.
    16. Byford, Martin C., 2017. "Moral hazard in strategic decision making," International Journal of Industrial Organization, Elsevier, vol. 55(C), pages 114-136.
    17. Herakles Polemarchakis, 2015. "Markets and Efficiency," The Japanese Economic Review, Japanese Economic Association, vol. 66(2), pages 150-166, June.
    18. Theodoros M. Diasakos & Kostas Koufopoulos, 2011. "Efficient Nash Equilibrium under Adverse Selection," Carlo Alberto Notebooks 215, Collegio Carlo Alberto.
    19. Diasakos, Theodoros M. & Koufopoulos, Kostas, 2018. "(Neutrally) Optimal Mechanism under Adverse Selection: The canonical insurance problem," Games and Economic Behavior, Elsevier, vol. 111(C), pages 159-186.
    20. Kadan, Ohad & Swinkels, Jeroen M., 2013. "Minimum payments and induced effort in moral hazard problems," Games and Economic Behavior, Elsevier, vol. 82(C), pages 468-489.

    More about this item

    Keywords

    market; economics; stock;
    All these keywords.

    JEL classification:

    • G0 - Financial Economics - - General
    • G1 - Financial Economics - - General Financial Markets

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:cda:wpaper:79. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Letters and Science IT Services Unit (email available below). General contact details of provider: https://edirc.repec.org/data/educdus.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.