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The Neighbor's Portfolio: Word-of-Mouth Effects in the Holdings and Trade of Money Managers

  • Harrison Hong
  • Jeffrey D. Kubik
  • Jeremy C. Stein

A mutual-fund manager is more likely to hold (or buy, or sell) a particular stock in any quarter if other managers in the same city are holding (or buying, or selling) that same stock. This pattern shows up even when controlling for the distance between the fund manager and the stock in question, so it is distinct from a local-preference effect. It is also robust to a variety of controls for investment styles. These results can be interpreted in terms of an epidemic model in which investors spread information about stocks to one another by word of mouth.

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File URL: http://www.nber.org/papers/w9711.pdf
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 9711.

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Date of creation: May 2003
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Publication status: published as Hong, Harrison, Jeffrey D. Kubik and Jeremy C. Stein. “Thy Neighbor’s Portfolio: Word-of-Mouth Effects in the Holdings and Trades of Money Managers." Journal of Finance 60 (2005): 2801-2824.
Handle: RePEc:nbr:nberwo:9711
Note: AP CF
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  7. Glaeser, Edward L & Sacerdote, Bruce & Scheinkman, Jose A, 1996. "Crime and Social Interactions," The Quarterly Journal of Economics, MIT Press, vol. 111(2), pages 507-48, May.
  8. Scharfstein, David S & Stein, Jeremy C, 1990. "Herd Behavior and Investment," American Economic Review, American Economic Association, vol. 80(3), pages 465-79, June.
  9. Allen N. Berger & Nathan H. Miller & Mitchell A. Petersen & Raghuram G. Rajan & Jeremy C. Stein, 2002. "Does Function Follow Organzizational Form? Evidence From the Lending Practices of Large and Small Banks," Harvard Institute of Economic Research Working Papers 1976, Harvard - Institute of Economic Research.
  10. Harrison Hong & Jeremy C. Stein, 1997. "A Unified Theory of Underreaction, Momentum Trading and Overreaction in Asset Markets," NBER Working Papers 6324, National Bureau of Economic Research, Inc.
  11. Rosenthal, Stuart S. & Strange, William C., 2001. "The Determinants of Agglomeration," Journal of Urban Economics, Elsevier, vol. 50(2), pages 191-229, September.
  12. Guy Dumais & Glenn Ellison & Edward L Glaeser, 1998. "Geographic Concentration as a Dynamic Process," Working Papers 98-3, Center for Economic Studies, U.S. Census Bureau.
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  15. Barberis, Nicholas & Shleifer, Andrei & Vishny, Robert, 1998. "A model of investor sentiment," Journal of Financial Economics, Elsevier, vol. 49(3), pages 307-343, September.
  16. Harrison Hong & Jeffrey D. Kubik & Jeremy C. Stein, 2001. "Social Interaction and Stock-Market Participation," NBER Working Papers 8358, National Bureau of Economic Research, Inc.
  17. Judith Chevalier & Glenn Ellison, 1999. "Career Concerns Of Mutual Fund Managers," The Quarterly Journal of Economics, MIT Press, vol. 114(2), pages 389-432, May.
  18. Harrison Hong & Jeffrey D. Kubik & Amit Solomon, 2000. "Security Analysts' Career Concerns and Herding of Earnings Forecasts," RAND Journal of Economics, The RAND Corporation, vol. 31(1), pages 121-144, Spring.
  19. Paul A. Gompers & Andrew Metrick, 1998. "Institutional Investors and Equity Prices," NBER Working Papers 6723, National Bureau of Economic Research, Inc.
  20. Mitchell A. Petersen & Raghuram G. Rajan, 2002. "Does Distance Still Matter? The Information Revolution in Small Business Lending," Journal of Finance, American Finance Association, vol. 57(6), pages 2533-2570, December.
  21. Duflo, Esther & Saez, Emmanuel, 2002. "Participation and investment decisions in a retirement plan: the influence of colleagues' choices," Journal of Public Economics, Elsevier, vol. 85(1), pages 121-148, July.
  22. KENT D. DANIEL & David Hirshleifer & AVANIDHAR SUBRAHMANYAM, 2004. "A Theory of Overconfidence, Self-Attribution, and Security Market Under- and Over-reactions," Finance 0412006, EconWPA.
  23. Ellison, Glenn & Fudenberg, Drew, 1995. "Word-of-Mouth Communication and Social Learning," The Quarterly Journal of Economics, MIT Press, vol. 110(1), pages 93-125, February.
  24. Harrison Hong & Terence Lim & Jeremy C. Stein, 2000. "Bad News Travels Slowly: Size, Analyst Coverage, and the Profitability of Momentum Strategies," Journal of Finance, American Finance Association, vol. 55(1), pages 265-295, 02.
  25. Jegadeesh, Narasimhan & Titman, Sheridan, 1993. " Returns to Buying Winners and Selling Losers: Implications for Stock Market Efficiency," Journal of Finance, American Finance Association, vol. 48(1), pages 65-91, March.
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