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Value of Information in Competitive Economies with Incomplete Markets

  • Piero Gottardi


  • Rohit Rahi

    (Departments of Economics and Finance, London School of Economics)

A substantial literature addresses the negative effect on welfare of the release of information in a competitive market economy. We show that the value of information in this setting is typically positive if asset markets are sufficiently incomplete. More specifically, for any competitive equilibrium of a generic economy, we can find a finer information structure such that an allocation that is resource feasible and measurable with respect to this information ex-post Pareto dominates the given equilibrium allocation.

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Paper provided by Department of Economics, University of Venice "Ca' Foscari" in its series Working Papers with number 2007_25.

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Length: 24
Date of creation: 2007
Date of revision:
Handle: RePEc:ven:wpaper:2007_25
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  1. Michael Magill & Martine Quinzii, 2002. "Theory of Incomplete Markets, Volume 1," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262632543, June.
  2. Lawrence Blume & Tarek Coury & David Easley, 2006. "Information, trade and incomplete markets," Economic Theory, Springer, vol. 29(2), pages 379-394, October.
  3. Nils H. Hakansson & J. Gregory Kunkel & James A. Ohlson., 1981. "Sufficient and Necessary Conditions for Information to Have Social Value in Pure Exchange," Research Program in Finance Working Papers 122, University of California at Berkeley.
  4. Rohit Rahi, 2000. "Efficiency Properties of Rational Expectations Equilibria with Asymmetric Information," Econometric Society World Congress 2000 Contributed Papers 1468, Econometric Society.
  5. Bengt Holmstrom & Roger B. Myerson, 1981. "Efficient and Durable Decision Rules with Incomplete Information," Discussion Papers 495, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  6. Campbell, Colin M., 2004. "Blackwell's ordering and public information," Journal of Economic Theory, Elsevier, vol. 114(2), pages 179-197, February.
  7. Edward E. Schlee, 2001. "The Value of Information in Efficient Risk-Sharing Arrangements," American Economic Review, American Economic Association, vol. 91(3), pages 509-524, June.
  8. Magill, Michael & Shafer, Wayne, 1991. "Incomplete markets," Handbook of Mathematical Economics, in: W. Hildenbrand & H. Sonnenschein (ed.), Handbook of Mathematical Economics, edition 1, volume 4, chapter 30, pages 1523-1614 Elsevier.
  9. Alessandro Citanna & Atsushi Kajii & Antonio Villanacci, 1998. "Constrained suboptimality in incomplete markets: a general approach and two applications," Post-Print hal-00479390, HAL.
  10. repec:tpr:qjecon:v:101:y:1986:i:2:p:229-64 is not listed on IDEAS
  11. David Cass & Alessandro Citanna, 1998. "Pareto Improving Financial Innovation in Incomplete Markets," Post-Print hal-00479286, HAL.
  12. 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.
  13. Eckwert, Bernhard & Zilcha, Itzhak, 2001. "The Value of Information in Production Economies," Journal of Economic Theory, Elsevier, vol. 100(1), pages 172-186, September.
  14. Milne, Frank & Shefrin, H. M., 1987. "Information and securities: A note on pareto dominance and the second best," Journal of Economic Theory, Elsevier, vol. 43(2), pages 314-328, December.
  15. Alessandro Citanna & Antonio Villanacci, . "Incomplete markets, allocative efficiency and the information revealed by prices," GSIA Working Papers 10, Carnegie Mellon University, Tepper School of Business.
  16. Green, Jerry R, 1981. "Value of Information with Sequential Futures Markets," Econometrica, Econometric Society, vol. 49(2), pages 335-58, March.
  17. Cass, David & Shell, Karl, 1983. "Do Sunspots Matter?," Journal of Political Economy, University of Chicago Press, vol. 91(2), pages 193-227, April.
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