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A Comparison of Stock Market Mechanism

Abstract

I analyze a static, noisy rational expectations equilibrium model where traders exchange vectors of assets accessing multi-dimensional information under two alternative market structures. In the first (the unrestricted system), informed speculators condition their demands for each asset on all equilibrium prices and market makers set prices observing all order flows; in the second (the restricted system), speculators are restricted to condition their demand on the price of the asset they want to trade and market makers only observe the order flow of the asset they price. I show that informed traders' incentives to collect and exploit multi-dimensional private information depend on the number of prices they can condition upon when submitting their demand schedules, and on the specific price formation process one considers. Building on this insight, I then give conditions under which the restricted system is more efficient than the unrestricted system.

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Paper provided by Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy in its series CSEF Working Papers with number 94.

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Date of creation: 02 Apr 2003
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Publication status: Published in RAND Journal of Economics, 2004, vol. 35, pages 803-824
Handle: RePEc:sef:csefwp:94
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Keywords: financial economics; asset pricing; information and market efficiency; market mechanisms;

Find related papers by JEL classification:

  • G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)
  • 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

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  1. Frederic Palomino, 2001. "Informational efficiency: ranking markets," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 18(3), pages 683-700.
  2. Vives, X., 1992. "The Speed of Information Revelation in a Financial Market Mechanism," UFAE and IAE Working Papers 174.92, Unitat de Fonaments de l'Anàlisi Econòmica (UAB) and Institut d'Anàlisi Econòmica (CSIC).
  3. Xavier Vives, 1994. "Short-term Investment and the Informational Efficiency of the Market," CEPR Financial Markets Paper 0034, European Science Foundation Network in Financial Markets, c/o C.E.P.R, 77 Bastwick Street, London EC1V 3PZ..
  4. Grossman, Sanford J & Stiglitz, Joseph E, 1980. "On the Impossibility of Informationally Efficient Markets," American Economic Review, American Economic Association, vol. 70(3), pages 393-408, June.
  5. Hellwig, Martin F., 1980. "On the aggregation of information in competitive markets," Journal of Economic Theory, Elsevier, vol. 22(3), pages 477-498, June.
  6. Sanford J. Grossman, . "The Informational Role of Upstairs and Downstairs Trading," Rodney L. White Center for Financial Research Working Papers 22-90, Wharton School Rodney L. White Center for Financial Research.
  7. Robert Gertner & Robert Gibbons & David Scharfstein, 1988. "Simultaneous Signalling to the Capital and Product Markets," RAND Journal of Economics, The RAND Corporation, vol. 19(2), pages 173-190, Summer.
  8. Admati, Anat R, 1985. "A Noisy Rational Expectations Equilibrium for Multi-asset Securities Markets," Econometrica, Econometric Society, vol. 53(3), pages 629-57, May.
  9. Rohit Rahi & James Dow, 1998. "Informed Trading, Investment, and Welfare," FMG Discussion Papers dp292, Financial Markets Group.
  10. Pagano, Marco & Roell, Ailsa, 1996. " Transparency and Liquidity: A Comparison of Auction and Dealer Markets with Informed Trading," Journal of Finance, American Finance Association, vol. 51(2), pages 579-611, June.
  11. Biais, Bruno, 1993. " Price Information and Equilibrium Liquidity in Fragmented and Centralized Markets," Journal of Finance, American Finance Association, vol. 48(1), pages 157-85, March.
  12. Rochet, J.C. & Vila, J.L., 1993. "Insider Trading Without Normality," Papers 93.b, Toulouse - GREMAQ.
  13. Nicholas Economides & Robert Schwartz,, . "Electronic Call Market Trading," Financial Networks _001, Economics of Networks.
  14. Kyle, Albert S, 1985. "Continuous Auctions and Insider Trading," Econometrica, Econometric Society, vol. 53(6), pages 1315-35, November.
  15. Madhavan, Ananth, 1992. " Trading Mechanisms in Securities Markets," Journal of Finance, American Finance Association, vol. 47(2), pages 607-41, June.
  16. Diamond, Douglas W. & Verrecchia, Robert E., 1981. "Information aggregation in a noisy rational expectations economy," Journal of Financial Economics, Elsevier, vol. 9(3), pages 221-235, September.
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