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Rational Asset Pricing Bubbles Revisited

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  • Jan Werner

    (University of Minnesota)

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    Abstract

    Price bubble arises when the price of an asset exceeds the asset's fundamental value, that is, the present value of future dividend payments. The important result of Santos and Woodford (1997) says that price bubbles cannot exist in equilibrium in the standard dynamic asset pricing model with rational agents as long as assets are in strictly positive supply and the present value of total future resources is finite. This paper explores the possibility of asset price bubbles when either one of the sufficient conditions for non-existence of bubbles is violated. We demonstrate that there always exist equilibria with price bubbles on assets in zero supply. Further, we show that endogenous debt constraints generated by limited enforcement of trade are in a certain sense most prone to give rise to equilibrium price bubbles on assets in strictly positive supply and with infinite present value of total resources.

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    File URL: http://www.economicdynamics.org/meetpapers/2012/paper_1165.pdf
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    Bibliographic Info

    Paper provided by Society for Economic Dynamics in its series 2012 Meeting Papers with number 1165.

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    Date of creation: 2012
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    Handle: RePEc:red:sed012:1165

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    1. Harrison, J Michael & Kreps, David M, 1978. "Speculative Investor Behavior in a Stock Market with Heterogeneous Expectations," The Quarterly Journal of Economics, MIT Press, vol. 92(2), pages 323-36, May.
    2. Christian Hellwig & Guido Lorenzoni, 2006. "Bubbles and Self-enforcing Debt," Levine's Bibliography 321307000000000383, UCLA Department of Economics.
    3. Eli Ofek & Matthew Richardson, 2003. "DotCom Mania: The Rise and Fall of Internet Stock Prices," Journal of Finance, American Finance Association, vol. 58(3), pages 1113-1138, 06.
    4. Narayana R. Kocherlakota, 2006. "Injecting Rational Bubbles," Levine's Bibliography 122247000000000905, UCLA Department of Economics.
    5. Bidian, Florin & Bejan, Camelia, 2011. "Martingale properties of self-enforcing debt," MPRA Paper 36609, University Library of Munich, Germany, revised 12 Feb 2012.
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