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Insiders-outsiders, transparency and the value of the ticker

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  • Cespa, Giovanni
  • Foucault, Thierry

Abstract

We consider a multi-period rational expectations model in which risk-averse investors differ in their information on past transaction prices (the ticker). Some investors (insiders) observe prices in real-time whereas other investors (outsiders) observe prices with a delay. As prices are informative about the asset payoff, insiders get a strictly larger expected utility than outsiders. Yet, information acquisition by one investor exerts a negative externality on other investors. Thus, investors' average welfare is maximal when access to price information is rationed. We show that a market for price information can implement the fraction of insiders that maximizes investors' average welfare. This market features a high price to curb excessive acquisition of ticker information. We also show that informational efficiency is greater when the dissemination of ticker information is broader and more timely. --

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Bibliographic Info

Paper provided by Center for Financial Studies (CFS) in its series CFS Working Paper Series with number 2008/39.

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Date of creation: 2008
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Handle: RePEc:zbw:cfswop:200839

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Related research

Keywords: Market Data Sales; Latency; Transparency; Price Discovery; Hirshleifer Effect;

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References

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  1. Hellwig, Martin F., 1982. "Rational expectations equilibrium with conditioning on past prices: A mean-variance example," Journal of Economic Theory, Elsevier, vol. 26(2), pages 279-312, April.
  2. Rohit Rahi & James Dow, 1998. "Informed Trading, Investment, and Welfare," FMG Discussion Papers dp292, Financial Markets Group.
  3. Brennan, Michael J & Cao, H Henry, 1996. "Information, Trade, and Derivative Securities," Review of Financial Studies, Society for Financial Studies, vol. 9(1), pages 163-208.
  4. Reena Aggarwal & Sandeep Dahiya, 2006. "Demutualization and Public Offerings of Financial Exchanges," Journal of Applied Corporate Finance, Morgan Stanley, vol. 18(3), pages 96-106.
  5. Giovanni Cespa, 2007. "Information Sales and Insider Trading with Long-lived Information," Working Papers 613, Queen Mary, University of London, School of Economics and Finance.
  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.
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  8. Admati, Anat R. & Pfleiderer, Paul, 1987. "Viable allocations of information in financial markets," Journal of Economic Theory, Elsevier, vol. 43(1), pages 76-115, October.
  9. Cespa, Giovanni, 2004. "Information Sales and Insider Trading," CEPR Discussion Papers 4667, C.E.P.R. Discussion Papers.
  10. Mulherin, J Harold & Netter, Jeffry M & Overdahl, James A, 1992. "Prices Are Property: The Organization of Financial Exchanges from a Transaction Cost Perspective," Journal of Law and Economics, University of Chicago Press, vol. 34(2), pages 591-644, October.
  11. Hellwig, Martin F., 1980. "On the aggregation of information in competitive markets," Journal of Economic Theory, Elsevier, vol. 22(3), pages 477-498, June.
  12. 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.
  13. Medrano, Luis Angel & Vives, Xavier, 2002. "Regulating Insider Trading when Investment Matters," CEPR Discussion Papers 3292, C.E.P.R. Discussion Papers.
  14. Admati, Anat R & Pfleiderer, Paul, 1990. "Direct and Indirect Sale of Information," Econometrica, Econometric Society, vol. 58(4), pages 901-28, July.
  15. Craig Pirrong, 2002. "Securities Market Macrostructure: Property Rights and the Efficiency of Securities Trading," Journal of Law, Economics and Organization, Oxford University Press, vol. 18(2), pages 385-410, October.
  16. Hirshleifer, Jack, 1971. "The Private and Social Value of Information and the Reward to Inventive Activity," American Economic Review, American Economic Association, vol. 61(4), pages 561-74, September.
  17. Giovanni Cespa, 2007. "Information Sales and Insider Trading with Long-lived Information," CSEF Working Papers 174, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy.
  18. José M. Marín & Rohit Rahi, 1996. "Information revelation and market incompleteness," Economics Working Papers 145, Department of Economics and Business, Universitat Pompeu Fabra.
  19. Admati, Anat R. & Pfleiderer, Paul, 1986. "A monopolistic market for information," Journal of Economic Theory, Elsevier, vol. 39(2), pages 400-438, August.
  20. Verrecchia, Robert E, 1982. "Information Acquisition in a Noisy Rational Expectations Economy," Econometrica, Econometric Society, vol. 50(6), pages 1415-30, November.
  21. 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.
  22. Hasbrouck, Joel, 1995. " One Security, Many Markets: Determining the Contributions to Price Discovery," Journal of Finance, American Finance Association, vol. 50(4), pages 1175-99, September.
  23. 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.
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Citations

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Cited by:
  1. Cespa, Giovanni & Vives, Xavier, 2009. "Dynamic Trading and Asset Prices: Keynes vs. Hayek," CEPR Discussion Papers 7506, C.E.P.R. Discussion Papers.
  2. Yacine Aït-Sahalia & Mehmet Saglam, 2013. "High Frequency Traders: Taking Advantage of Speed," NBER Working Papers 19531, National Bureau of Economic Research, Inc.
  3. Sirnes, Espen, 2011. "Why falling information costs may increase demand for index funds," Review of Financial Economics, Elsevier, vol. 20(1), pages 37-47, January.
  4. Giovanni Cespa, 2007. "Information Sales and Insider Trading with Long-lived Information," Working Papers 613, Queen Mary, University of London, School of Economics and Finance.
  5. Cespa, Giovanni & Foucault, Thierry, 2011. "Learning from Prices, Liquidity Spillovers, and Market Segmentation," CEPR Discussion Papers 8350, C.E.P.R. Discussion Papers.
  6. Álvaro Cartea & José Penalva, 2011. "Where is the value in high frequency trading?," Banco de Espa�a Working Papers 1111, Banco de Espa�a.

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