Information Acquisition and Portfolio Performance
AbstractRational investors perceive correctly the value of financial information. Investment in information is therefore rewarded with a higher Sharpe ratio. Overconfident investors overstate the quality of their own information, and thus attain a lower Sharpe ratio. We contrast the implications of the two models using a unique survey of customers of an Italian leading bank with portfolio data and measures of financial information. We find that the portfolio Sharpe ratio is negatively associated with investment in information. The negative correlation is stronger for men than women and for those who claim they know stocks well, arguably because these investors are more likely to be overconfident. We also show that investment in information is associated with more frequent trading, less delegation of portfolio decisions and less diversified portfolios. In each case, the effect of information is stronger for investors who, a priori, are suspected to be more overconfident.
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Bibliographic InfoPaper provided by Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy in its series CSEF Working Papers with number 167.
Date of creation: 01 Oct 2006
Date of revision:
Portfolio Choice; Rationality; Overconfidence; Behavioral Finance;
Other versions of this item:
- Luigi Guiso & Tullio Jappelli, 2006. "Information Acquisition and Portfolio Performance," CeRP Working Papers 52, Center for Research on Pensions and Welfare Policies, Turin (Italy).
- Guiso, Luigi & Jappelli, Tullio, 2006. "Information Acquisition and Portfolio Performance," CEPR Discussion Papers 5901, C.E.P.R. Discussion Papers.
- Luigi Guiso & Tullio Jappelli, 2007. "Information Acquisition and Portfolio Performance," Economics Working Papers ECO2007/45, European University Institute.
- E2 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment
- D8 - Microeconomics - - Information, Knowledge, and Uncertainty
- G1 - Financial Economics - - General Financial Markets
This paper has been announced in the following NEP Reports:
- NEP-ALL-2006-09-30 (All new papers)
- NEP-FIN-2006-09-30 (Finance)
- NEP-FMK-2006-09-30 (Financial Markets)
- NEP-MAC-2006-09-30 (Macroeconomics)
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.:
- Grossman, Sanford J & Stiglitz, Joseph E, 1980.
"On the Impossibility of Informationally Efficient Markets,"
American Economic Review,
American Economic Association, vol. 70(3), pages 393-408, June.
- Sanford J Grossman & Joseph E Stiglitz, 1997. "On the Impossibility of Informationally Efficient Markets," Levine's Working Paper Archive 1908, David K. Levine.
- Laura Veldkamp & Stijn Van Nieuwerburgh, 2005. "Information Acquisition and Portfolio Underdiversification," 2005 Meeting Papers 77, Society for Economic Dynamics.
- Bilias, Yannis & Georgarakos, Dimitris & Haliassos, Michael, 2006.
"Portfolio inertia and stock market fluctuations,"
CFS Working Paper Series
2006/14, Center for Financial Studies (CFS).
- Calvet, Laurent & Campbell, John Y. & Sodini, Paolo, 2006.
"Down or out: assessing the welfare costs of household investment mistakes,"
Les Cahiers de Recherche
832, HEC Paris.
- Laurent E. Calvet & John Y. Campbell & Paolo Sodini, 2007. "Down or Out: Assessing the Welfare Costs of Household Investment Mistakes," Journal of Political Economy, University of Chicago Press, vol. 115(5), pages 707-747, October.
- Laurent E. Calvet & John Y. Campbell & Paolo Sodini, 2006. "Down or Out: Assessing the Welfare Costs of Household Investment Mistakes," NBER Working Papers 12030, National Bureau of Economic Research, Inc.
- Sodini, Paolo & Campbell, John & Calvet, Laurent E., 2007. "Down or Out: Assessing the Welfare Costs of Household Investment Mistakes," Scholarly Articles 3122488, Harvard University Department of Economics.
- Calvet, Laurent E. & Campbell, John Y. & Sodini, Paolo, 2006. "Down or Out: Assessing The Welfare Costs of Household Investment Mistakes," Working Paper Series 195, Sveriges Riksbank (Central Bank of Sweden).
- Laurent E. Calvet & John Y. Campbell & Paolo Sodini, 2006. "Down or Out: Assessing the Welfare Costs of Household Investment Mistakes," Harvard Institute of Economic Research Working Papers 2107, Harvard - Institute of Economic Research.
- 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.
- Nicholas Barberis & Richard Thaler, 2002.
"A Survey of Behavioral Finance,"
NBER Working Papers
9222, National Bureau of Economic Research, Inc.
- Zoran Ivkovich & Clemens Sialm & Scott Weisbenner, 2004.
"Portfolio Concentration and the Performance of Individual Investors,"
NBER Working Papers
10675, National Bureau of Economic Research, Inc.
- 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.
- Verrecchia, Robert E, 1982. "Information Acquisition in a Noisy Rational Expectations Economy," Econometrica, Econometric Society, vol. 50(6), pages 1415-30, November.
- Massa, Massimo & Simonov, Andrei, 2004.
"Hedging, Familiarity and Portfolio Choice,"
SIFR Research Report Series
21, Institute for Financial Research.
- Brad M. Barber & Terrance Odean, 2001. "Boys Will Be Boys: Gender, Overconfidence, And Common Stock Investment," The Quarterly Journal of Economics, MIT Press, vol. 116(1), pages 261-292, February.
- Biais, Bruno & Hilton, Denis & Mazurier, Karine & Pouget, Sébastien, 2004.
"Judgmental Overconfidence, Self-Monitoring and Trading Performance in an Experimental Financial Market,"
IDEI Working Papers
259, Institut d'Économie Industrielle (IDEI), Toulouse.
- Bruno Biais & Denis Hilton & Karine Mazurier & Sébastien Pouget, 2005. "Judgemental Overconfidence, Self-Monitoring, and Trading Performance in an Experimental Financial Market," Review of Economic Studies, Oxford University Press, vol. 72(2), pages 287-312.
- Terrance Odean, 1999. "Do Investors Trade Too Much?," American Economic Review, American Economic Association, vol. 89(5), pages 1279-1298, December.
- Terrance Odean, 1998. "Are Investors Reluctant to Realize Their Losses?," Journal of Finance, American Finance Association, vol. 53(5), pages 1775-1798, October.
- Luigi Guiso & Monica Paiella, 2003.
"Risk Aversion, Wealth and Background Risk,"
Temi di discussione (Economic working papers)
483, Bank of Italy, Economic Research and International Relations Area.
- Guiso, Luigi & Paiella, Monica, 2001. "Risk Aversion, Wealth and Background Risk," CEPR Discussion Papers 2728, C.E.P.R. Discussion Papers.
- Luigi Guiso & Monica Paiella, 2007. "Risk Aversion, Wealth, and Background Risk," Economics Working Papers ECO2007/47, European University Institute.
- Monica Paiella & Luigi Guiso, 2004. "Risk Aversion, Wealth and Background Risk," 2004 Meeting Papers 525, Society for Economic Dynamics.
- Robert B. Barsky & Miles S. Kimball & F. Thomas Juster & Matthew D. Shapiro, 1997. "Preference Parameters and Behavioral Heterogeneity: An Experimental Approach in the Health and Retirement Survey," NBER Working Papers 5213, National Bureau of Economic Research, Inc.
- Huberman, Gur, 2001. "Familiarity Breeds Investment," Review of Financial Studies, Society for Financial Studies, vol. 14(3), pages 659-80.
- Joël Peress, 2004. "Wealth, Information Acquisition, and Portfolio Choice," Review of Financial Studies, Society for Financial Studies, vol. 17(3), pages 879-914.
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