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The Speed of Information Revelation in a Financial Market Mechanism

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Author Info
Xavier Vives

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Abstract

Suppose that information about the value of a risky asset is dispersed among many agents in the economy. The paper studies the rate at which successive price quotations from competitive market makers, which reflect the desired (notional) trades of risk- averse informed agents, reveal the value of the asset. The situation considered is akin to the real-time dissemination of theoretical prices in the opening batch auction of some continuous stock trading systems. The issue is studied in the context of an information t tonnement process in which informed agents submit market orders to market makers who quote prices efficiently. Informed agents in turn revise their estimates of the value of the asset and resubmit orders. The equilibrium of the t tonnement is fully characterized and it is found that price quotations converge to the underlying value of the asset at a rate of n-1/2, where n is the number of rounds of the t tonnement, and have an asymptotic precision negatively related to the degree of risk aversion, the noisiness of private signals and the amount of noise in the system. The analysis makes clear the role of competitive market makers: by increasing the depth of the market as the number of rounds increase they induce insiders to respond more to their information and speed up convergence. In fact, in markets in which depth is exogenously fixed, convergence is slow. The approach used allows also the study of the comparative dynamic properties of equilibria, such as the

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Publisher Info
Paper provided by European Science Foundation Network in Financial Markets, c/o C.E.P.R, 53--56 Great Sutton Street, London EC1V 0DG in its series CEPR Financial Markets Paper with number 0016.

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Date of creation: Sep 1992
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Availability: in print
Handle: RePEc:cpr:ceprfm:0016

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Related research
Keywords: Opening Batch Auction; Limit Orders; Market Orders; Risk-averse; Asymmetric Information; Rational Expectations;

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  1. Hirshleifer, David & Teoh, Siew Hong, 2008. "Thought and Behavior Contagion in Capital Markets," MPRA Paper 9164, University Library of Munich, Germany. [Downloadable!]
    Other versions:
  2. Giovanni Cespa, 2003. "A Comparison of Stock Market Mechanisms," CSEF Working Papers 94, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy. [Downloadable!]
    Other versions:
  3. Boccard, N. & Calcagno, R., 1999. "Asymmetries of information in centralized order-driven markets," Discussion Papers (IRES - Institut de Recherches Economiques et Sociales) 1999016, Université catholique de Louvain, Institut de Recherches Economiques et Sociales (IRES). [Downloadable!]
    Other versions:
  4. Sandro Brusco & Carolina Manzano & Mikel Tapia, 2003. "Price Discovery In The Pre-Opening Period. Theory And Evidence From The Madrid Stock Exchange," Business Economics Working Papers wb035814, Universidad Carlos III, Departamento de Economía de la Empresa. [Downloadable!]
  5. Juan Dubra & Helios Herrera, 2002. "Market Participation, Information and Volatility," Working Papers 0206, Centro de Investigacion Economica, ITAM. [Downloadable!]
  6. FOUCAULT, Thierry & LESCOURRET, Laurence, 2001. "Information sharing, liquidity and transaction costs in floor-based trading systems," Les Cahiers de Recherche 742, HEC Paris. [Downloadable!]
    Other versions:
  7. Christophe Chamley, 2003. "Dynamic Speculative Attacks," American Economic Review, American Economic Association, vol. 93(3), pages 603-621, June. [Downloadable!]
  8. Giovanni Cespa, 2003. "Giffen Goods and Market Making," CSEF Working Papers 97, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy. [Downloadable!]
    Other versions:
  9. Piero Gottardi & Roberto Serrano, 2004. "Market Power and Information Revelation in Dynamic Trading," CESifo Working Paper Series CESifo Working Paper No. , CESifo Group Munich. [Downloadable!]
    Other versions:
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