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Asset markets can achieve efficiency in the directed search framework

Author

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  • Shoko Morimoto

    (Graduate School of Economics, Osaka University)

Abstract

Using a directed search model, modified from random matching, this paper investigates how trading frictions in asset markets affect portfolio choices, asset prices, and welfare. By solving the model numerically, it is demonstrated that the asset price increases (decreases) in the matching efficiency, if the relative risk aversion is smaller (larger) than unity. Efficient asset allocation is achieved in the directed search framework, while random matching is known not to achieve efficient allocation.

Suggested Citation

  • Shoko Morimoto, 2009. "Asset markets can achieve efficiency in the directed search framework," Discussion Papers in Economics and Business 09-33, Osaka University, Graduate School of Economics.
    • Handle: RePEc:osk:wpaper:0933
    as

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    File URL: http://www2.econ.osaka-u.ac.jp/library/global/dp/0933.pdf
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    References listed on IDEAS

    as
    1. Dimitri Vayanos & Pierre‐Olivier Weill, 2008. "A Search‐Based Theory of the On‐the‐Run Phenomenon," Journal of Finance, American Finance Association, vol. 63(3), pages 1361-1398, June.
    2. Vayanos, Dimitri & Wang, Tan, 2007. "Search and endogenous concentration of liquidity in asset markets," Journal of Economic Theory, Elsevier, vol. 136(1), pages 66-104, September.
    3. Douglas W. Diamond, 1984. "Financial Intermediation and Delegated Monitoring," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 51(3), pages 393-414.
    4. Lagos, Ricardo, 2010. "Asset prices and liquidity in an exchange economy," Journal of Monetary Economics, Elsevier, vol. 57(8), pages 913-930, November.
    5. Arthur J. Hosios, 1990. "On The Efficiency of Matching and Related Models of Search and Unemployment," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 57(2), pages 279-298.
    6. Moen, Espen R, 1997. "Competitive Search Equilibrium," Journal of Political Economy, University of Chicago Press, vol. 105(2), pages 385-411, April.
    7. Weill, Pierre-Olivier, 2008. "Liquidity premia in dynamic bargaining markets," Journal of Economic Theory, Elsevier, vol. 140(1), pages 66-96, May.
    8. Ricardo Lagos & Guillaume Rocheteau, 2007. "Search in Asset Markets: Market Structure, Liquidity, and Welfare," American Economic Review, American Economic Association, vol. 97(2), pages 198-202, May.
    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    directed search; asset market; social welfare; intermediation;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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