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The Action Value of Information and the Natural Transparency Limit¤

  • Muendler, Marc-Andreas

Add an opening stage of signal acquisition to a canonical portfolio choice model and let investors have rational expectations about the ensuing Walrasian equilibrium. The expected marginal utility of a signal (its action value) falls in the number of signals and turns strictly negative at a finite number because signals diminish the asset's excess return. There is a natural transparency limit at which rational investors pay to inhibit information disclosure. Prior to the limit, Financial information is a public good and justifies intervention. To instill more transparency, cutting costs of information acquisition is superior to disclosure because disclosure crowds out private information acquisition and risks a violation of the transparency limit.

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Paper provided by Department of Economics, UC San Diego in its series University of California at San Diego, Economics Working Paper Series with number qt6qb079x5.

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Date of creation: 01 Sep 2005
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Handle: RePEc:cdl:ucsdec:qt6qb079x5
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  1. Rahi, Rohit, 1996. "Adverse Selection and Security Design," Review of Economic Studies, Wiley Blackwell, vol. 63(2), pages 287-300, April.
  2. George-Marios Angeletos & Alessandro Pavan, 2004. "Transparency of Information and Coordination in Economies with Investment Complementarities," American Economic Review, American Economic Association, vol. 94(2), pages 91-98, May.
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  9. Giuseppe Moscarini & Lones Smith, 2001. "The Optimal Level of Experimentation," Econometrica, Econometric Society, vol. 69(6), pages 1629-1644, November.
  10. Marin, Jose M & Rahi, Rohit, 2000. "Information Revelation and Market Incompleteness," Review of Economic Studies, Wiley Blackwell, vol. 67(3), pages 563-79, July.
  11. Reny, P.J. & Bhattacharya, U. & Spiegel, M., 1993. "Destructive Interference in an Imperfectly Competitive Multi-Security Market," UWO Department of Economics Working Papers 9318, University of Western Ontario, Department of Economics.
  12. Peter DeMarzo & Darrell Duffie, 1999. "A Liquidity-Based Model of Security Design," Econometrica, Econometric Society, vol. 67(1), pages 65-100, January.
  13. Hellwig, Martin F., 1980. "On the aggregation of information in competitive markets," Journal of Economic Theory, Elsevier, vol. 22(3), pages 477-498, June.
  14. Nelson, Daniel B, 1991. "Conditional Heteroskedasticity in Asset Returns: A New Approach," Econometrica, Econometric Society, vol. 59(2), pages 347-70, March.
  15. Akerlof, George A, 1970. "The Market for 'Lemons': Quality Uncertainty and the Market Mechanism," The Quarterly Journal of Economics, MIT Press, vol. 84(3), pages 488-500, August.
  16. Tong, Hui, 2007. "Disclosure standards and market efficiency: Evidence from analysts' forecasts," Journal of International Economics, Elsevier, vol. 72(1), pages 222-241, May.
  17. Chade, Hector & Schlee, Edward, 2002. "Another Look at the Radner-Stiglitz Nonconcavity in the Value of Information," Journal of Economic Theory, Elsevier, vol. 107(2), pages 421-452, December.
  18. Verrecchia, Robert E, 1982. "Information Acquisition in a Noisy Rational Expectations Economy," Econometrica, Econometric Society, vol. 50(6), pages 1415-30, November.
  19. Raith, Michael, 1996. "A General Model of Information Sharing in Oligopoly," Journal of Economic Theory, Elsevier, vol. 71(1), pages 260-288, October.
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