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Liquidity and Congestion

Author

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  • Gara Minguez Afonso

    (LSE / Princeton University)

Abstract

This paper studies the relationship between the arrival of potential investors and market liquidity in a search-based model of asset trading. The entry of investors into a specific market causes two contradictory effects. First, it reduces trading costs, which then attracts new investors (thick market externality effect). But secondly, as investors concentrate on one side of the market, the market becomes “congested”, decreasing the returns to participating in this market and discouraging new investors from entering (congestion effect). The equilibrium level of market liquidity depends on which of the two effects dominates. When congestion is the leading effect, some interesting results arise. In particular, we find that diminishing trading costs in our market can deteriorate liquidity and reduce welfare.

Suggested Citation

  • Gara Minguez Afonso, 2008. "Liquidity and Congestion," 2008 Meeting Papers 926, Society for Economic Dynamics.
  • Handle: RePEc:red:sed008:926
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    File URL: https://economicdynamics.org/meetpapers/2008/paper_926.pdf
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    References listed on IDEAS

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    1. Acharya, Viral V. & Pedersen, Lasse Heje, 2005. "Asset pricing with liquidity risk," Journal of Financial Economics, Elsevier, vol. 77(2), pages 375-410, August.
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    3. James J. McAndrews & Simon M. Potter, 2002. "Liquidity effects of the events of September 11, 2001," Economic Policy Review, Federal Reserve Bank of New York, issue Nov, pages 59-79.
    4. Gromb, Denis & Vayanos, Dimitri, 2002. "Equilibrium and welfare in markets with financially constrained arbitrageurs," Journal of Financial Economics, Elsevier, vol. 66(2-3), pages 361-407.
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    6. Diamond, Peter A, 1982. "Aggregate Demand Management in Search Equilibrium," Journal of Political Economy, University of Chicago Press, vol. 90(5), pages 881-894, October.
    7. Vayanos, Dimitri, 1998. "Transaction Costs and Asset Prices: A Dynamic Equilibrium Model," Review of Financial Studies, Society for Financial Studies, vol. 11(1), pages 1-58.
    8. Ricardo Lagos & Guillaume Rocheteau, 2009. "Liquidity in Asset Markets With Search Frictions," Econometrica, Econometric Society, vol. 77(2), pages 403-426, March.
    9. Amihud, Yakov & Mendelson, Haim, 1986. "Asset pricing and the bid-ask spread," Journal of Financial Economics, Elsevier, vol. 17(2), pages 223-249, December.
    10. James Dow, 2004. "Is Liquidity Self-Fulfilling?," The Journal of Business, University of Chicago Press, vol. 77(4), pages 895-908, October.
    11. 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.
    12. Peter A. Diamond, 1982. "Wage Determination and Efficiency in Search Equilibrium," Review of Economic Studies, Oxford University Press, vol. 49(2), pages 217-227.
    13. Marco Pagano, 1989. "Trading Volume and Asset Liquidity," The Quarterly Journal of Economics, Oxford University Press, vol. 104(2), pages 255-274.
    14. Milgrom, Paul & Roberts, John, 1990. "Rationalizability, Learning, and Equilibrium in Games with Strategic Complementarities," Econometrica, Econometric Society, vol. 58(6), pages 1255-1277, November.
    15. Pissarides, Christopher A, 1985. "Short-run Equilibrium Dynamics of Unemployment Vacancies, and Real Wages," American Economic Review, American Economic Association, vol. 75(4), pages 676-690, September.
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    Cited by:

    1. Pierre-Olivier Weill & Bruno Biais, 2009. "Liquidity shocks and order book dynamics," 2009 Meeting Papers 89, Society for Economic Dynamics.
    2. Lagos, Ricardo & Rocheteau, Guillaume & Weill, Pierre-Olivier, 2011. "Crises and liquidity in over-the-counter markets," Journal of Economic Theory, Elsevier, vol. 146(6), pages 2169-2205.

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