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Value of Information in Competitive Economies with Incomplete Markets

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Rohit Rahi ()
Piero Gottardi

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Abstract

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 thisinformation ex-post Pareto dominates the given equilibrium allocation.Journal of Economic Literature Classification Numbers: D52, D60, D80.Keywords: Competitive Equilibrium, Incomplete Markets, Value of Information.

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Paper provided by Financial Markets Group in its series FMG Discussion Papers with number dp596.

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Date of creation: Sep 2007
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Handle: RePEc:fmg:fmgdps:dp596

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  1. Green, Jerry R, 1981. "Value of Information with Sequential Futures Markets," Econometrica, Econometric Society, vol. 49(2), pages 335-58, March. [Downloadable!] (restricted)
  2. Rohit Rahi & Piero Gottardi, 2001. "Efficiency Properties of Rational Expectations Equilibria with Asymmetric Information," FMG Discussion Papers dp381, Financial Markets Group. [Downloadable!] (restricted)
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  3. Holmstrom, Bengt & Myerson, Roger B, 1983. "Efficient and Durable Decision Rules with Incomplete Information," Econometrica, Econometric Society, vol. 51(6), pages 1799-819, November. [Downloadable!] (restricted)
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  4. Bernhard Eckwert & Itzhak Zilcha, 2003. "Incomplete risk sharing arrangements and the value of information," Economic Theory, Springer, vol. 21(1), pages 43-58, 01. [Downloadable!] (restricted)
  5. Cass, David & Shell, Karl, 1983. "Do Sunspots Matter?," Journal of Political Economy, University of Chicago Press, vol. 91(2), pages 193-227, April. [Downloadable!] (restricted)
  6. 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. [Downloadable!] (restricted)
  7. Eckwert, Bernhard & Zilcha, Itzhak, 2001. "The Value of Information in Production Economies," Journal of Economic Theory, Elsevier, vol. 100(1), pages 172-186, September. [Downloadable!] (restricted)
  8. Campbell, Colin M., 2004. "Blackwell's ordering and public information," Journal of Economic Theory, Elsevier, vol. 114(2), pages 179-197, February. [Downloadable!] (restricted)
  9. 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. [Downloadable!] (restricted)
  10. Atsushi Kajii & Antonio Villanacci & Alessandro Citanna, 1998. "Constrained suboptimality in incomplete markets: a general approach and two applications," Economic Theory, Springer, vol. 11(3), pages 495-521. [Downloadable!] (restricted)
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