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Information Acquisition and Under-Diversification

  • Stijn Van Nieuwerburgh
  • Laura Veldkamp

If an investor wants to form a portfolio of risky assets and can exert effort to collect information on the future value of these assets before he invests, which assets should he learn about? The best assets to acquire information about are ones the investor expects to hold. But the assets the investor holds depend on the information he observes. We build a framework to solve jointly for investment and information choices, with general preferences and information cost functions. Although the optimal research strategies depend on preferences and costs, the main result is that the investor who can first collect information systematically deviates from holding a diversified portfolio. Information acquisition can rationalize investing in a diversified fund and a concentrated set of assets, an allocation often observed, but usually deemed anomalous. Copyright , Wiley-Blackwell.

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File URL: http://hdl.handle.net/10.1111/j.1467-937X.2009.00583.x
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Article provided by Oxford University Press in its journal The Review of Economic Studies.

Volume (Year): 77 (2010)
Issue (Month): 2 ()
Pages: 779-805

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Handle: RePEc:oup:restud:v:77:y:2010:i:2:p:779-805
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  1. Valery Polkovnichenko, 2005. "Household Portfolio Diversification: A Case for Rank-Dependent Preferences," Review of Financial Studies, Society for Financial Studies, vol. 18(4), pages 1467-1502.
  2. James Bullard & George Evans, 2004. "Near-Rational Exuberance," 2004 Meeting Papers 465, Society for Economic Dynamics.
  3. Maćkowiak, Bartosz & Wiederholt, Mirko, 2009. "Optimal sticky prices under rational inattention," Working Paper Series 1009, European Central Bank.
  4. Gadi Barlevy & Pietro Veronesi, . "Information Acquisition in Financial Markets," CRSP working papers 484, Center for Research in Security Prices, Graduate School of Business, University of Chicago.
  5. Albuquerque, Rui & Bauer, Gregory H. & Schneider, Martin, 2004. "International equity flows and returns: a quantative equilibrium approach," Working Paper Series 0310, European Central Bank.
  6. Alok Kumar & William N. Goetzmann, 2003. "Diversification Decisions of Individual Investors and Asset Prices," Yale School of Management Working Papers ysm441, Yale School of Management.
  7. Laura E. Kodres & Matthew Pritsker, 2002. "A Rational Expectations Model of Financial Contagion," Journal of Finance, American Finance Association, vol. 57(2), pages 769-799, 04.
  8. Marcin Kacperczyk & Clemens Sialm & Lu Zheng, 2004. "On the Industry Concentration of Actively Managed Equity Mutual Funds," NBER Working Papers 10770, National Bureau of Economic Research, Inc.
  9. Brunnermeier, Markus & Gollier, Christian & Parker, Jonathan, 2007. "Optimal Beliefs, Asset Prices, and the Preference for Skewed Returns," IDEI Working Papers 429, Institut d'Économie Industrielle (IDEI), Toulouse.
  10. Massa, Massimo & Simonov, Andrei, 2004. "Hedging, Familiarity and Portfolio Choice," CEPR Discussion Papers 4789, C.E.P.R. Discussion Papers.
  11. Luigi Guiso & Tullio Jappelli, 2006. "Information Acquisition and Portfolio Performance," CeRP Working Papers 52, Center for Research on Pensions and Welfare Policies, Turin (Italy).
  12. Epstein, Larry G & Zin, Stanley E, 1989. "Substitution, Risk Aversion, and the Temporal Behavior of Consumption and Asset Returns: A Theoretical Framework," Econometrica, Econometric Society, vol. 57(4), pages 937-69, July.
  13. Pascal J. Maenhout, 2004. "Robust Portfolio Rules and Asset Pricing," Review of Financial Studies, Society for Financial Studies, vol. 17(4), pages 951-983.
  14. Marco Cagetti & Lars Peter Hansen & Thomas Sargent & Noah Williams, 2002. "Robustness and Pricing with Uncertain Growth," Review of Financial Studies, Society for Financial Studies, vol. 15(2), pages 363-404, March.
  15. Joël Peress, 2004. "Wealth, Information Acquisition, and Portfolio Choice," Review of Financial Studies, Society for Financial Studies, vol. 17(3), pages 879-914.
  16. Ivković, Zoran & Sialm, Clemens & Weisbenner, Scott, 2008. "Portfolio Concentration and the Performance of Individual Investors," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 43(03), pages 613-655, September.
  17. Zoran Ivkovic & Scott Weisbenner, 2005. "Local Does as Local Is: Information Content of the Geography of Individual Investors' Common Stock Investments," Journal of Finance, American Finance Association, vol. 60(1), pages 267-306, 02.
  18. Dimitri Vayanos, 2003. "The decentralization of information processing in the presence of interactions," LSE Research Online Documents on Economics 452, London School of Economics and Political Science, LSE Library.
  19. Timothy Van Zandt & Roy Radner, 1998. "Real-Time Decentralized Information Processing and Returns to Scale," Discussion Papers 1233, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  20. Spence, Michael & Zeckhauser, Richard J, 1972. "The Effect of the Timing of Consumption Decisions and the Resolution of Lotteries on the Choice of Lotteries," Econometrica, Econometric Society, vol. 40(2), pages 401-03, March.
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