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Trading and rational security pricing bubbles

  • Jean-Marc Bottazzi


    (Axe Economie mathématique et jeux - CES - Centre d'économie de la Sorbonne - UP1 - Université Panthéon-Sorbonne - CNRS - EEP-PSE - Ecole d'Économie de Paris - Paris School of Economics)

  • Jaime Luque


    (Universidad Carlos III de Madrid [Madrid])

  • Mário R. Páscoa


    (NOVA - School of Business and Economics - School of Business and Economics)

Securities markets theory includes repo and distinguishes shorting from issuing. Here we revisit whether trading alone can give rise to Ponzi schemes and rational bubbles. We show that under the same institutional arrangements that limit re-hypothecation (e.g., through segregated haircut rules or explicit leverage constraints on haircut collecting dealers), (1) trading Ponzi schemes are prevented without having to assume uniform impatience, (2) for securities in positive net supply, bubbles are ruled out under complete markets but may occur when markets are incomplete. We give an example of such a bubble, under a finite present value of wealth.

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Paper provided by HAL in its series Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) with number halshs-00673995.

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Date of creation: Feb 2012
Date of revision:
Publication status: Published in Documents de travail du Centre d'Economie de la Sorbonne 2012.10 - ISSN : 1955-611X. 2012
Handle: RePEc:hal:cesptp:halshs-00673995
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  1. Hart, Oliver D., 1975. "On the optimality of equilibrium when the market structure is incomplete," Journal of Economic Theory, Elsevier, vol. 11(3), pages 418-443, December.
  2. Jean-Marc Bottazzi & Jaime Luque & Mário Páscoa, 2012. "Securities market theory: Possession, repo and rehypothecation," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) hal-00665629, HAL.
  3. 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.
  4. Markus K. Brunnermeier & Lasse Heje Pedersen, 2009. "Market Liquidity and Funding Liquidity," Review of Financial Studies, Society for Financial Studies, vol. 22(6), pages 2201-2238, June.
  5. Araujo, Aloisio. & Fajardo, J. & Páscoa. M. R., 2004. "Endogenous Collateral," Finance Lab Working Papers flwp_68, Finance Lab, Insper Instituto de Ensino e Pesquisa.
  6. Magill, M. & Quinzii, M., 1993. "Icomplete Markets Over an Infinite Horizon: Long-Lived Securities and Speculative Bubbles," Papers 9321, Southern California - Department of Economics.
  7. Mário Páscoa & Myrian Petrassi & Juan Pablo Torres-Martínez, 2008. "Fiat money and the value of binding portfolio constraints," Working Papers wp283, University of Chile, Department of Economics.
  8. David K. Levine & William R. Zame, 1993. "Debt Constraints and Equilibrium in Infinite Horizon Economies with Incomplete Markets," UCLA Economics Working Papers 703, UCLA Department of Economics.
  9. Páscoa, Mário Rui & Seghir, Abdelkrim, 2009. "Harsh default penalties lead to Ponzi schemes," Games and Economic Behavior, Elsevier, vol. 65(1), pages 270-286, January.
  10. Araujo, Aloisio & Novinski, Rodrigo & Páscoa, Mário R., 2011. "General equilibrium, wariness and efficient bubbles," Journal of Economic Theory, Elsevier, vol. 146(3), pages 785-811, May.
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