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The Action Value of Information and the Natural Transparency Limit¤

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Author Info
Marc-Andreas Muendler (University of California, San Diego)

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Abstract

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 2005-09.

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Date of creation: 01 Sep 2005
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Handle: RePEc:cdl:ucsdec:2005-09

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Related research
Keywords: information acquisition; portfolio choice; rational expecta-tions equilibrium; informational efficiency; transparency;

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  6. Geore-Marios Angeletos & Alessandro Pavan, 2004. "Transparency of Information and Coordination in Economies with Investment Complementarities," Levine's Bibliography 122247000000000289, UCLA Department of Economics. [Downloadable!]
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  7. Marin, Jose M & Rahi, Rohit, 2000. "Information Revelation and Market Incompleteness," Review of Economic Studies, Blackwell Publishing, vol. 67(3), pages 563-79, July.
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  8. Verrecchia, Robert E, 1982. "Information Acquisition in a Noisy Rational Expectations Economy," Econometrica, Econometric Society, vol. 50(6), pages 1415-30, November. [Downloadable!] (restricted)
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  16. Camille Cornand & Frank Heinemann, 2004. "Optimal Degree of Public Information Dissemination," CESifo Working Paper Series CESifo Working Paper No. , CESifo Group Munich. [Downloadable!]
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  17. Bhattacharya Utpal & Reny Philip J. & Spiegel Matthew, 1995. "Destructive Interference in an Imperfectly Competitive Multi-Security Market," Journal of Economic Theory, Elsevier, vol. 65(1), pages 136-170, February. [Downloadable!] (restricted)
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(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Marc-Andreas Muendler, 2005. "Rational Transparency Choice in Financial Market Equilibrium¤," University of California at San Diego, Economics Working Paper Series 2005-04R, Department of Economics, UC San Diego. [Downloadable!]
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