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Utility Maximization with Addictive Consumption Habit Formation in Incomplete Semimartingale Markets

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  • Xiang Yu
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    Abstract

    This paper studies the continuous time utility maximization problem on consumption with addictive habit formation in incomplete semimartingale markets. Introducing the set of auxiliary state processes and the modified dual space, we embed our original problem into a time-separable utility maximization problem with a shadow random endowment on the product space $\mathbb{L}_{+}^{0}(\Omega\times[0,T],\mathcal{O},\bar{\mathbb{P}})$. Existence and uniqueness of the optimal solution are established using convex duality approach, where the primal value function is defined on two variables, i.e., the initial wealth and the initial standard of living. We also provide sufficient conditions on the stochastic discounting processes and on the utility function for the well-posedness of the original optimization problem. Under the same assumptions, classical proofs in the approach of convex duality analysis can be modified when the auxiliary dual process is not necessarily integrable.

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    File URL: http://arxiv.org/pdf/1112.2940
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    Bibliographic Info

    Paper provided by arXiv.org in its series Papers with number 1112.2940.

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    Date of creation: Dec 2011
    Date of revision: Apr 2014
    Handle: RePEc:arx:papers:1112.2940

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    Web page: http://arxiv.org/

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    1. Julien Hugonnier & Dmitry Kramkov, 2004. "Optimal investment with random endowments in incomplete markets," Papers math/0405293, arXiv.org.
    2. Roman Muraviev, 2011. "Additive habit formation: Consumption in incomplete markets with random endowments," Papers 1106.2980, arXiv.org, revised Sep 2011.
    3. Detemple, Jerome B & Zapatero, Fernando, 1991. "Asset Prices in an Exchange Economy with Habit Formation," Econometrica, Econometric Society, vol. 59(6), pages 1633-57, November.
    4. (**), Hui Wang & Jaksa Cvitanic & (*), Walter Schachermayer, 2001. "Utility maximization in incomplete markets with random endowment," Finance and Stochastics, Springer, vol. 5(2), pages 259-272.
    5. Frank Riedel & Peter Bank, 2001. "Existence and structure of stochastic equilibria with intertemporal substitution," Finance and Stochastics, Springer, vol. 5(4), pages 487-509.
    6. Bruno Bouchard & Huyên Pham, 2004. "Wealth-path dependent utility maximization in incomplete markets," Finance and Stochastics, Springer, vol. 8(4), pages 579-603, November.
    7. Gordan Zitkovic, 2005. "Utility Maximization with a Stochastic Clock and an Unbounded Random Endowment," Papers math/0503516, arXiv.org.
    8. R. Mehra & E. Prescott, 2010. "The equity premium: a puzzle," Levine's Working Paper Archive 1401, David K. Levine.
    9. Detemple, Jerome B. & Karatzas, Ioannis, 2003. "Non-addictive habits: optimal consumption-portfolio policies," Journal of Economic Theory, Elsevier, vol. 113(2), pages 265-285, December.
    10. Mark Schroder & Costis Skiadas, 2002. "An Isomorphism Between Asset Pricing Models With and Without Linear Habit Formation," Review of Financial Studies, Society for Financial Studies, vol. 15(4), pages 1189-1221.
    11. Jerome B. Detemple & Fernando Zapatero, 1992. "Optimal Consumption-Portfolio Policies With Habit Formation," Mathematical Finance, Wiley Blackwell, vol. 2(4), pages 251-274.
    12. Kramkov, D.O., 1994. "Optional decomposition of supermartingales and hedging contingent claims in incomplete security markets," Discussion Paper Serie B 294, University of Bonn, Germany.
    13. Bouchard, Bruno & Pham, Huyen, 2004. "Wealth-Path Dependent Utility Maximization in Incomplete Markets," Economics Papers from University Paris Dauphine 123456789/1803, Paris Dauphine University.
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