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Noise Trading, Delegated Portfolio Management, and Economic Welfare

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Author Info
James Dow
Gary Gorton

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Abstract

We consider a model of the stock market with delegated portfolio management. All agents are rational: some trade for hedging reasons, some investors optimally contract with portfolio managers who may have stock-picking abilities, and portfolio managers trade optimally given the incentives provided by this contract. Managers try, but sometimes fail, to discover profitable trading opportunities. Although it is best not to trade in this case, their clients cannot distinguish "actively doing nothing," in this sense, from "simply doing nothing." Because of this problem: (i) some portfolio managers trade even though they have no reason to prefer one asset to another (noise trade). We also show that, (ii), the amount of such noise trade can be large compared to the amount of hedging volume. Perhaps surprisingly, (iii), noise trade may be Pareto-improving. Noise trade may be viewed as a public good. Results (i) and (ii) are compatible with observed high levels of turnover in securities markets. Result (iii) illustrates some of the possible subtleties of the welfare economics of financial markets.

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Publisher Info
Paper provided by Wharton School Rodney L. White Center for Financial Research in its series Rodney L. White Center for Financial Research Working Papers with number 19-94.

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Handle: RePEc:fth:pennfi:19-94

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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. Grossman, Sanford J & Stiglitz, Joseph E, 1976. "Information and Competitive Price Systems," American Economic Review, American Economic Association, vol. 66(2), pages 246-53, May.
  2. James Tobin, 1978. "A Proposal for International Monetary Reform," Eastern Economic Journal, Eastern Economic Association, vol. 4(3-4), pages 153-159, Jul/Oct. [Downloadable!]
    Other versions:
  3. Diamond, Douglas W. & Verrecchia, Robert E., 1981. "Information aggregation in a noisy rational expectations economy," Journal of Financial Economics, Elsevier, vol. 9(3), pages 221-235, September. [Downloadable!] (restricted)
  4. Bhattacharya, Sudipto & Pfleiderer, Paul, 1985. "Delegated portfolio management," Journal of Economic Theory, Elsevier, vol. 36(1), pages 1-25, June. [Downloadable!] (restricted)
  5. De Long, J Bradford & Andrei Shleifer & Lawrence H. Summers & Robert J. Waldmann, 1990. "Noise Trader Risk in Financial Markets," Journal of Political Economy, University of Chicago Press, vol. 98(4), pages 703-38, August. [Downloadable!] (restricted)
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  6. Trueman, Brett, 1988. " A Theory of Noise Trading in Securities Markets," Journal of Finance, American Finance Association, vol. 43(1), pages 83-95, March. [Downloadable!] (restricted)
  7. Ausubel, Lawrence M., 1990. "Partially-revealing rational expectations equilibrium in a competitive economy," Journal of Economic Theory, Elsevier, vol. 50(1), pages 93-126, February. [Downloadable!] (restricted)
  8. Allen, Franklin, 1990. "The market for information and the origin of financial intermediation," Journal of Financial Intermediation, Elsevier, vol. 1(1), pages 3-30, March. [Downloadable!] (restricted)
  9. Sanford J. Grossman & Joseph E. Stiglitz, 1980. "On the Impossibility of Informationally Efficient Markets," NBER Reprints 0121, National Bureau of Economic Research, Inc.
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  10. Kyle, Albert S, 1985. "Continuous Auctions and Insider Trading," Econometrica, Econometric Society, vol. 53(6), pages 1315-35, November. [Downloadable!] (restricted)
  11. Pagano, Marco, 1989. "Endogenous Market Thinness and Stock Price Volatility," Review of Economic Studies, Blackwell Publishing, vol. 56(2), pages 269-87, April. [Downloadable!] (restricted)
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  12. Allen, Franklin & Gorton, Gary, 1993. "Churning Bubbles," Review of Economic Studies, Blackwell Publishing, vol. 60(4), pages 813-36, October. [Downloadable!] (restricted)
  13. Dow, James & Gorton, Gary, 1994. " Arbitrage Chains," Journal of Finance, American Finance Association, vol. 49(3), pages 819-49, July. [Downloadable!] (restricted)
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  14. James Tobin, 1978. "A Proposal for International Monetary Reform," Eastern Economic Journal, Palgrave Macmillan Journals, vol. 4(3-4), pages 153-159, Jul/Oct. [Downloadable!] (restricted)
  15. Ausubel, Lawrence M, 1990. "Insider Trading in a Rational Expectations Economy," American Economic Review, American Economic Association, vol. 80(5), pages 1022-41, December. [Downloadable!] (restricted)
  16. Dow James & Gorton Gary, 1995. "Profitable Informed Trading in a Simple General Equilibrium Model of Asset Pricing," Journal of Economic Theory, Elsevier, vol. 67(2), pages 327-369, December. [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. Dasgupta, Amil & Prat, Andrea & Verardo, Michela, 2007. "Institutional Trade Persistence and Long-Term Equity Returns," CEPR Discussion Papers 6374, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
  2. Alexander Gumbel, 1999. "Trading on Short-Term Information," OFRC Working Papers Series 1999fe10, Oxford Financial Research Centre. [Downloadable!]
  3. Glaser, Markus & Weber, Martin, 2003. "Overconfidence and Trading Volume," CEPR Discussion Papers 3941, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
  4. James Dow & Gary Gorton, 1995. "Stock Market Efficiency and Economic Efficiency: Is There a Connection?," NBER Working Papers 5233, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
    Other versions:
  5. Livio Stracca, 2005. "Delegated portfolio management: a survey of the theoretical literature," Working Paper Series 520, European Central Bank. [Downloadable!]
    Other versions:
  6. Dimitri Vayanos, 2004. "Flight to Quality, Flight to Liquidity, and the Pricing of Risk," NBER Working Papers 10327, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  7. Sadrieh, A. & Palomino, F.A., 2003. "Overconfidence and delegated portfolio management," Discussion Paper 54, Tilburg University, Center for Economic Research. [Downloadable!]
    Other versions:
  8. Mathias Drehmann & Joerg Oechssler & Andreas Roider, 2003. "Herding and Contrarian Behavior in Financial Markets: An Internet Experiment," University of California at Santa Barbara, Economics Working Paper Series 18-03, Department of Economics, UC Santa Barbara. [Downloadable!]
    Other versions:
  9. Alexander Gümbel, 2001. "Emerging Markets and Entry by Actively Managed Funds," OFRC Working Papers Series 2001fe12, Oxford Financial Research Centre. [Downloadable!]
  10. Amil Dasgupta & Andrea Prat, 2005. "Reputation and Asset Prices: A Theory of Information Cascades and Systematic Mispricing," Levine's Bibliography 784828000000000368, UCLA Department of Economics. [Downloadable!]
  11. Gary Gorton & Ping He & Lixin Huang, 2006. "Asset Prices When Agents are Marked-to-Market," NBER Working Papers 12075, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  12. Lütje, Torben, 2004. "Sichtweisen und Anlageverhalten des österreichischen Fondsmanagements," Diskussionspapiere der Wirtschaftswissenschaftlichen Fakultät der Universität Hannover dp-310, Universität Hannover, Wirtschaftswissenschaftliche Fakultät. [Downloadable!]
  13. Terrance Odean, 1999. "Do Investors Trade Too Much?," American Economic Review, American Economic Association, vol. 89(5), pages 1279-1298, December. [Downloadable!] (restricted)
  14. James Dow & Gary Gorton, 2006. "Noise Traders," NBER Working Papers 12256, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  15. Glaser, Markus & Weber, Martin, 2003. "Overconfidence and Trading Volume," Sonderforschungsbereich 504 Publications 03-07, Sonderforschungsbereich 504, Universität Mannheim & Sonderforschungsbereich 504, University of Mannheim. [Downloadable!]
  16. John Fernald & Hali Edison & Prakash Loungani, 1998. "Was China the first domino? assessing links between China and the rest of emerging Asia," International Finance Discussion Papers 604, Board of Governors of the Federal Reserve System (U.S.). [Downloadable!]
  17. Dasgupta, Amil & Prat, Andrea, 2003. "Trading Volume with Career Concerns," CEPR Discussion Papers 4034, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
  18. Gary Gorton & Richard Rosen, 1995. "Banks and Derivatives," NBER Working Papers 5100, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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