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Information provision in financial markets

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Author Info

  • Moez Bennouri

    (Pôle Finance Responsable - Rouen Business School - Rouen Business School)

  • C.Robert Clark

    (EMLYON Business school - EMLYON Business School)

  • Jacques Robert

    (HEC Montréal - HEC MONTRÉAL)

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    Abstract

    We set up a rational expectations model in which investors trade a risky asset based on a private signal they receive about the quality of the asset, and a public signal that represents a noisy aggregation of the private signals of all investors. Our model allows us to examine what happens to market performance (market depth, price efficiency, volume of trade, and expected welfare) when regulators can induce improved information provision in one of two ways. Regulations can be designed that either provide investors with more accurate information by improving the quality of prior information, or that enhance the transparency of the market by improving the quality of the public signal. In our rational expectations equilibrium, improving the quality of the public signal can be interpreted as a way of providing information about the anticipations and trading motives of all market participants. We find that both alternatives improve market depth. However, in the limit, we show that improving the precision of prior information is a more efficient way to do so. More accurate prior information decreases asymmetric information problems and consequently reduces the informativeness of prices, while a more accurate public signal increases price informativeness. The volume of trade is independent of the quality of prior information and is increasing in the quality of the public signal. Finally, expected welfare can sometimes fall as prior information or the public signal become more precise.

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    Bibliographic Info

    Paper provided by HAL in its series Post-Print with number hal-00565501.

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    Date of creation: 01 Mar 2010
    Date of revision:
    Publication status: Published, Annals of Finance, 2010, Vol. 6, n°2, pp. 255-286
    Handle: RePEc:hal:journl:hal-00565501

    Note: View the original document on HAL open archive server: http://hal-rbs.archives-ouvertes.fr/hal-00565501
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    Related research

    Keywords: Information; rational expectations; market performance;

    References

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    1. Lars E. O. Svensson, 2006. "Social Value of Public Information: Comment: Morris and Shin (2002) Is Actually Pro-Transparency, Not Con," American Economic Review, American Economic Association, vol. 96(1), pages 448-452, March.
    2. Brown, David P & Zhang, Zhi Ming, 1997. " Market Orders and Market Efficiency," Journal of Finance, American Finance Association, vol. 52(1), pages 277-308, March.
    3. Camille Cornand & Frank Heinemann, 2008. "Optimal Degree of Public Information Dissemination," Economic Journal, Royal Economic Society, vol. 118(528), pages 718-742, 04.
    4. Madhavan, A., 1991. "Security Prices and Market Transparency," Weiss Center Working Papers 1-92, Wharton School - Weiss Center for International Financial Research.
    5. Kyle, Albert S, 1989. "Informed Speculation with Imperfect Competition," Review of Economic Studies, Wiley Blackwell, vol. 56(3), pages 317-55, July.
    6. Madhavan, Ananth, 1995. "Consolidation, Fragmentation, and the Disclosure of Trading Information," Review of Financial Studies, Society for Financial Studies, vol. 8(3), pages 579-603.
    7. Flood, M. & Huisman , R. & Koedijk, C.G. & Mahieu, R.J., 1999. "Quote disclosure and price discovery in multiple-dealer financial markets," Open Access publications from Tilburg University urn:nbn:nl:ui:12-3106474, Tilburg University.
    8. Glosten, Lawrence R, 1989. "Insider Trading, Liquidity, and the Role of the Monopolist Specialist," The Journal of Business, University of Chicago Press, vol. 62(2), pages 211-35, April.
    9. Bloomfield, Robert & O'Hara, Maureen, 1999. "Market Transparency: Who Wins and Who Loses?," Review of Financial Studies, Society for Financial Studies, vol. 12(1), pages 5-35.
    10. Admati, Anat R & Pfleiderer, Paul, 1991. "Sunshine Trading and Financial Market Equilibrium," Review of Financial Studies, Society for Financial Studies, vol. 4(3), pages 443-81.
    11. Porter, David C. & Weaver, Daniel G., 1998. "Post-trade transparency on Nasdaq's national market system," Journal of Financial Economics, Elsevier, vol. 50(2), pages 231-252, November.
    12. Madhavan, Ananth & Porter, David & Weaver, Daniel, 2005. "Should securities markets be transparent?," Journal of Financial Markets, Elsevier, vol. 8(3), pages 265-287, August.
    13. Stephen Morris & Hyun Song Shin, 2002. "Social Value of Public Information," American Economic Review, American Economic Association, vol. 92(5), pages 1521-1534, December.
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    Cited by:
    1. Diana Muresan, 2012. "Retrospective Of Financial Reporting On Capital Market," Annales Universitatis Apulensis Series Oeconomica, Faculty of Sciences, "1 Decembrie 1918" University, Alba Iulia, vol. 2(14), pages 8.

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