Information Acquisition and Portfolio Performance
Rational 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.
If 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.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
|Date of creation:||Oct 2006|
|Date of revision:|
|Contact details of provider:|| Postal: |
Phone: 44 - 20 - 7183 8801
Fax: 44 - 20 - 7183 8820
|Order Information:|| Email: |
References listed on IDEAS
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.:
- Bilias, Yannis & Georgarakos, Dimitris & Haliassos, Michalis, 2009.
"Portfolio Inertia and Stock Market Fluctuations,"
CEPR Discussion Papers
7239, C.E.P.R. Discussion Papers.
- 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.
- 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.
- Sodini, Paolo & Calvet, Laurent E. & Campbell, John, 2007. "Down or Out: Assessing the Welfare Costs of Household Investment Mistakes," Scholarly Articles 3122488, Harvard University Department of Economics.
- 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.
- 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," NBER Working Papers 12030, National Bureau of Economic Research, Inc.
- Terrance Odean, 1999. "Do Investors Trade Too Much?," American Economic Review, American Economic Association, vol. 89(5), pages 1279-1298, December.
- 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.
- Klayman, Joshua & Soll, Jack B. & Gonzalez-Vallejo, Claudia & Barlas, Sema, 1999. "Overconfidence: It Depends on How, What, and Whom You Ask, , , , , , , , ," Organizational Behavior and Human Decision Processes, Elsevier, vol. 79(3), pages 216-247, September.
- Huberman, Gur, 2001. "Familiarity Breeds Investment," Review of Financial Studies, Society for Financial Studies, vol. 14(3), pages 659-80.
- Verrecchia, Robert E, 1982. "Information Acquisition in a Noisy Rational Expectations Economy," Econometrica, Econometric Society, vol. 50(6), pages 1415-30, November.
- 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.
- Massa, Massimo & Simonov, Andrei, 2004.
"Hedging, Familiarity and Portfolio Choice,"
SIFR Research Report Series
21, Institute for Financial Research.
- 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.
- Guiso, Luigi & Paiella, Monica, 2001.
"Risk Aversion, Wealth and Background Risk,"
CEPR Discussion Papers
2728, C.E.P.R. Discussion Papers.
- 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.
- 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.
- 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
- Robert B. Barsky & Miles S. Kimball & F. Thomas Juster & Matthew D. Shapiro, 1995. "Preference Parameters and Behavioral Heterogeneity: An Experimental Approach in the Health and Retirement Survey," NBER Working Papers 5213, National Bureau of Economic Research, Inc.
- Joël Peress, 2004. "Wealth, Information Acquisition, and Portfolio Choice," Review of Financial Studies, Society for Financial Studies, vol. 17(3), pages 879-914.
- Terrance Odean, 1998. "Are Investors Reluctant to Realize Their Losses?," Journal of Finance, American Finance Association, vol. 53(5), pages 1775-1798, October.
- 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.
- Laura Veldkamp & Stijn Van Nieuwerburgh, 2005. "Information Acquisition and Portfolio Underdiversification," 2005 Meeting Papers 77, Society for Economic Dynamics.
When requesting a correction, please mention this item's handle: RePEc:cpr:ceprdp:5901. See general 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: ()The email address of this maintainer does not seem to be valid anymore. Please ask to update the entry or send us the correct address
If references are entirely missing, you can add them using this form.