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Two-fund separation in dynamic general equilibrium

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Author Info
Schmedders, Karl () (Kellogg School of Management)

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Abstract

This paper examines the two-fund separation paradigm in the context of an infinite-horizon general equilibrium model with dynamically complete markets and heterogeneous consumers with time- and state-separable utility functions. With the exception of the dynamic structure, we maintain the assumptions of the classical static models that exhibit two-fund separation with a riskless security. Agents have equi-cautious HARA utility functions. In addition to a security with state-independent payoffs, agents can trade a collection of assets with dividends following a time-homogeneous Markov process. We make no further assumptions about the distribution of asset dividends, returns, or prices. If the riskless security in the economy is a consol then agents' portfolios exhibit two-fund separation. However, if agents can trade only a one-period bond, this result no longer holds. The underlying intuition is that general equilibrium restrictions lead to interest rate fluctuations that destroy the optimality of two-fund separation in economies with a one-period bond and result in different equilibrium portfolios.

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File URL: http://econtheory.org/ojs/index.php/te/article/view/20070135/55
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Publisher Info
Article provided by Society for Economic Theory in its journal Theoretical Economics.

Volume (Year): 2 (2007)
Issue (Month): 2 (June)
Pages: 135-161
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Handle: RePEc:the:publsh:320

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Web page: http://econtheory.org

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Related research
Keywords: Portfolio separation; dynamically complete markets; consol; one-period bond; interest rate fluctuation; reinvestment risk;

Other versions of this item:

Find related papers by JEL classification:
D53 - Microeconomics - - General Equilibrium and Disequilibrium - - - Financial Markets
G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
G12 - Financial Economics - - General Financial Markets - - - Asset Pricing

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

  1. Peter Bossaerts & Charles Plott & William R. Zame, 2006. "Prices and Portfolio Choices in Financial Markets: Theory and Experiment," Levine's Bibliography 122247000000001322, UCLA Department of Economics. [Downloadable!]
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  2. Amershi, Amin H & Stoeckenius, Jan H W, 1983. "The Theory of Syndicates and Linear Sharing Rules," Econometrica, Econometric Society, vol. 51(5), pages 1407-16, September. [Downloadable!] (restricted)
  3. Black, Fischer, 1972. "Capital Market Equilibrium with Restricted Borrowing," Journal of Business, University of Chicago Press, vol. 45(3), pages 444-55, July. [Downloadable!] (restricted)
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Chiaki Hara, 2005. "Heterogeneous Risk Attitudes in a Continuous-Time Model," KIER Working Papers 609, Kyoto University, Institute of Economic Research. [Downloadable!]
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