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 Sharp 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 and 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.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoPaper provided by Center for Research on Pensions and Welfare Policies, Turin (Italy) in its series CeRP Working Papers with number 52.
Length: 67 pages
Date of creation: Oct 2006
Date of revision:
Other versions of this item:
- Guiso, Luigi & Jappelli, Tullio, 2006. "Information Acquisition and Portfolio Performance," CEPR Discussion Papers 5901, C.E.P.R. Discussion Papers.
- Luigi Guiso & Tullio Jappelli, 2006. "Information Acquisition and Portfolio Performance," CSEF Working Papers 167, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy.
- 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-2007-01-23 (All new papers)
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.:
- Sodini, Paolo & Campbell, John & Calvet, Laurent E., 2007.
"Down or Out: Assessing the Welfare Costs of Household Investment Mistakes,"
3122488, Harvard University Department of Economics.
- 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.
- 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.
- 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.
- Laura Veldkamp & Stijn Van Nieuwerburgh, 2005. "Information Acquisition and Portfolio Underdiversification," 2005 Meeting Papers 77, Society for Economic Dynamics.
- 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.
- 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.
- Massa, Massimo & Simonov, Andrei, 2004.
"Hedging, Familiarity and Portfolio Choice,"
SIFR Research Report Series
21, Institute for Financial Research.
- Joël Peress, 2004. "Wealth, Information Acquisition, and Portfolio Choice," Review of Financial Studies, Society for Financial Studies, vol. 17(3), pages 879-914.
- 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, 2003. "Risk Aversion, Wealth and Background Risk," Temi di discussione (Economic working papers) 483, Bank of Italy, Economic Research and International Relations Area.
- Monica Paiella & Luigi Guiso, 2004. "Risk Aversion, Wealth and Background Risk," 2004 Meeting Papers 525, Society for Economic Dynamics.
- Luigi Guiso & Monica Paiella, 2007. "Risk Aversion, Wealth, and Background Risk," Economics Working Papers ECO2007/47, European University Institute.
- Barberis, Nicholas & Thaler, Richard, 2003.
"A survey of behavioral finance,"
Handbook of the Economics of Finance,
in: G.M. Constantinides & M. Harris & R. M. Stulz (ed.), Handbook of the Economics of Finance, edition 1, volume 1, chapter 18, pages 1053-1128
- Bilias, Yannis & Georgarakos, Dimitris & Haliassos, Michalis, 2009.
"Portfolio Inertia and Stock Market Fluctuations,"
CEPR Discussion Papers
7239, C.E.P.R. Discussion Papers.
- Sanford J Grossman & Joseph E Stiglitz, 1997.
"On the Impossibility of Informationally Efficient Markets,"
Levine's Working Paper Archive
1908, David K. Levine.
- 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.
- Gadi Barlevy & Pietro Veronesi, .
"Information Acquisition in Financial Markets,"
CRSP working papers
360, Center for Research in Security Prices, Graduate School of Business, University of Chicago.
- Terrance Odean, 1998. "Are Investors Reluctant to Realize Their Losses?," Journal of Finance, American Finance Association, vol. 53(5), pages 1775-1798, October.
- 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.
- Terrance Odean, 1999. "Do Investors Trade Too Much?," American Economic Review, American Economic Association, vol. 89(5), pages 1279-1298, December.
- Huberman, Gur, 2001. "Familiarity Breeds Investment," Review of Financial Studies, Society for Financial Studies, vol. 14(3), pages 659-80.
- 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.
- 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.
- 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.
- Verrecchia, Robert E, 1982. "Information Acquisition in a Noisy Rational Expectations Economy," Econometrica, Econometric Society, vol. 50(6), pages 1415-30, November.
Blog mentionsAs found by EconAcademics.org, the blog aggregator for Economics research:CitEc Project, subscribe to its RSS feed for this item.
This item has more than 25 citations. To prevent cluttering this page, these citations are listed on a separate page. reading list or among the top items on IDEAS.Access and download statisticsgeneral information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Silvia Maero).
If references are entirely missing, you can add them using this form.