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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
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. 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.
  2. Jean-Charles Rochet & Jean-Luc Vila, 1994. "Insider Trading without Normality," Review of Economic Studies, Oxford University Press, vol. 61(1), pages 131-152.
  3. Biais, Bruno, 1993. " Price Information and Equilibrium Liquidity in Fragmented and Centralized Markets," Journal of Finance, American Finance Association, vol. 48(1), pages 157-185, March.
  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. Grossman, Sanford J, 1992. "The Informational Role of Upstairs and Downstairs Trading," The Journal of Business, University of Chicago Press, vol. 65(4), pages 509-528, October.
  6. Hellwig, Martin F., 1980. "On the aggregation of information in competitive markets," Journal of Economic Theory, Elsevier, vol. 22(3), pages 477-498, June.
  7. James Dow, 2003. "Informed Trading, Investment, and Welfare," The Journal of Business, University of Chicago Press, vol. 76(3), pages 439-454, July.
  8. Vives, Xavier, 1995. "Short-Term Investment and the Informational Efficiency of the Market," Review of Financial Studies, Society for Financial Studies, vol. 8(1), pages 125-160.
  9. Nicholas Economides & Robert Schwartz,, "undated". "Electronic Call Market Trading," Financial Networks _001, Economics of Networks.
  10. Madhavan, Ananth, 1992. " Trading Mechanisms in Securities Markets," Journal of Finance, American Finance Association, vol. 47(2), pages 607-641, June.
  11. Vives Xavier, 1995. "The Speed of Information Revelation in a Financial Market Mechanism," Journal of Economic Theory, Elsevier, vol. 67(1), pages 178-204, October.
  12. Frederic Palomino, 2001. "Informational efficiency: ranking markets," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 18(3), pages 683-700.
  13. 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.
  14. Kyle, Albert S, 1985. "Continuous Auctions and Insider Trading," Econometrica, Econometric Society, vol. 53(6), pages 1315-1335, November.
  15. 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.
  16. Admati, Anat R, 1985. "A Noisy Rational Expectations Equilibrium for Multi-asset Securities Markets," Econometrica, Econometric Society, vol. 53(3), pages 629-657, May.
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