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Ambiguity, risk and asset returns in continuous time

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Author Info
Zengjing Chen () (Shandong University)
Larry G. Epstein () (University of Rochester)

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Abstract

Existing models in stochastic continuous-time settings assume that beliefs are represented by a probability measure. As illustrated by the Ellsberg Paradox, this feature rules out a priori any concern with ambiguity. This paper formulates a continuous-time intertemporal version of multiple-priors utility, where aversion to ambiguity is admissible. When applied to a representative agent asset market setting, the model delivers restrictions on excess returns that admit interpretations reflecting a premium for risk and a seperate premium for ambiguity.

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File URL: http://rcer.econ.rochester.edu/RCERPAPERS/rcer_474.pdf
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Publisher Info
Paper provided by University of Rochester - Center for Economic Research (RCER) in its series RCER Working Papers with number 474.

Download reference. The following formats are available: HTML, plain text, BibTeX, RIS (EndNote), ReDIF
Length: 47 pages
Date of creation: Jul 2000
Date of revision:
Handle: RePEc:roc:rocher:474

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Postal: UNIVERSITY OF ROCHESTER, CENTER FOR ECONOMIC RESEARCH, DEPARTMENT OF ECONOMICS, HARKNESS 231 ROCHESTER NEW YORK 14627 U.S.A.

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Related research
Keywords: ambiguity risk continuous-time asset returns Knightian uncertainty backward stochastic differential equation

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Find related papers by JEL classification:
D8 - Microeconomics - - Information, Knowledge, and Uncertainty
D9 - Microeconomics - - Intertemporal Choice and Growth
G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
G12 - Financial Economics - - General Financial Markets - - - Asset Pricing

Cited by:
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  1. Giannis Vardas & Anastasios Xepapadeas, 2004. "Uncertainty Aversion, Robust Control and Asset Holdings," Working Papers 0402, University of Crete, Department of Economics. [Downloadable!]
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  2. Larry G. Epstein, 2001. "Sharing Ambiguity," American Economic Review, American Economic Association, vol. 91(2), pages 45-50, May. [Downloadable!] (restricted)
  3. S. Nuri Erbas & Abbas Mirakhor, 2007. "The Equity Premium Puzzle, Ambiguity Aversion, and Institutional Quality," IMF Working Papers 07/230, International Monetary Fund. [Downloadable!]
  4. Marco Taboga, 2005. "Portfolio Selection with Two-Stage Preferences," Finance 0506009, EconWPA. [Downloadable!]
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  5. Peter Klibanoff & Massimo Marinacci & Sujoy Mukerji, 2006. "Recursive Smooth Ambiguity Preferences," Carlo Alberto Notebooks 17, Collegio Carlo Alberto, revised 2008. [Downloadable!]
  6. Uppal, Raman & Wang, Tan, 2002. "Model Misspecification and Under-Diversification," CEPR Discussion Papers 3304, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
  7. Alexander Ludwig & Alexander Zimper, 2006. "Rational expectations and ambiguity: A comment on Abel (2002)," Economics Bulletin, Economics Bulletin, vol. 4(2), pages 1-15. [Downloadable!]
  8. Raman Uppal & Lorenzo Garlappi & Tan Wang, 2004. "Portfolio Selection with Parameter and Model Uncertainty: A Multi-Prior Approach," Money Macro and Finance (MMF) Research Group Conference 2004 54, Money Macro and Finance Research Group. [Downloadable!]
  9. Sujoy Mukerji & Peter Klibanoff, 2002. "A Smooth Model of DecisionMaking Under Ambiguity," Economics Series Working Papers 113, University of Oxford, Department of Economics. [Downloadable!]
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  10. Kiyohiko G. Nishimura & Hiroyuki Ozaki, 2002. "An Axiomatic Approach to ƒÃ-contamination," CIRJE F-Series CIRJE-F-183, CIRJE, Faculty of Economics, University of Tokyo. [Downloadable!]
  11. Garlappi, Lorenzo & Uppal, Raman & Wang, Tan, 2005. "Portfolio Selection with Parameter and Model Uncertainty: A Multi-Prior Approach," CEPR Discussion Papers 5148, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
  12. Lars Peter Hansen & Thomas J. Sargent, 2001. "Robust Control and Model Uncertainty," American Economic Review, American Economic Association, vol. 91(2), pages 60-66, May. [Downloadable!] (restricted)
  13. Giannis Vardas & Anastasios Xepapadeas, 2004. "Uncertainty Aversion and Robust Portfolio Choices," Working Papers 0408, University of Crete, Department of Economics. [Downloadable!]
  14. Garlappi, Lorenzo & Uppal, Raman & Wang, Tan, 2005. "Portfolio Selection with Parameter and Model Uncertainty: A Multi-Prior Approach," CEPR Discussion Papers 5041, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
  15. Perroni, Carlo & Scharf, Kimberley, 2003. "Viable Tax Constitutions," The Warwick Economics Research Paper Series (TWERPS) 683, University of Warwick, Department of Economics. [Downloadable!]
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This page was last updated on 2008-11-26.

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