Rational Inattention, Long-run Consumption Risk, and Portfolio Choice
This paper explores how the introduction of rational inattention (RI) -- that agents process information subject to finite channel capacity -- affects optimal consumption and investment decisions in an otherwise standard intertemporal model of portfolio choice. We first explicitly derive optimal consumption and portfolio rules under RI and then show that introducing RI reduces the optimal share of savings invested in the risky asset because inattentive investors face greater long-run consumption risk. We also show that the investment horizon matters for portfolio allocation in the presence of RI, even if investment opportunities are constant and the utility function of investors is constant relative risk aversion. Second, after aggregating across investors, we show that introducing RI can better explain the observed joint dynamics of aggregate consumption and the equity return. Finally, we show that RI increases the implied equity premium because investors under RI face greater long-run consumption risk and thus require higher compensation in equilibrium. (Copyright: Elsevier)
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.
Volume (Year): 13 (2010)
Issue (Month): 4 (October)
|Contact details of provider:|| Postal: |
Web page: http://www.EconomicDynamics.org/review.htm
More information through EDIRC
|Order Information:|| Web: http://www.EconomicDynamics.org/RED17.htm 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.:
- Mackowiak, Bartosz Adam & Wiederholt, Mirko, 2010.
"Business Cycle Dynamics under Rational Inattention,"
CEPR Discussion Papers
7691, C.E.P.R. Discussion Papers.
- Maćkowiak, Bartosz & Wiederholt, Mirko, 2011. "Business cycle dynamics under rational inattention," Working Paper Series 1331, European Central Bank.
- Bartosz Mackowiak & Mirko Wiederholt, 2008. "Business Cycle Dynamics under Rational Inattention," 2008 Meeting Papers 1059, Society for Economic Dynamics.
- Sims, Christopher A., 2005. "Rational inattention: a research agenda," Discussion Paper Series 1: Economic Studies 2005,34, Deutsche Bundesbank, Research Centre.
- Martha Starr-McCluer, 2002.
"Stock Market Wealth and Consumer Spending,"
Western Economic Association International, vol. 40(1), pages 69-79, January.
- Jonathan A. Parker, 2003.
"Consumption Risk And Expected Stock Returns,"
144, Princeton University, Woodrow Wilson School of Public and International Affairs, Discussion Papers in Economics..
- Xavier Gabaix & David Laibson, 2002.
"The 6D Bias and the Equity Premium Puzzle,"
Harvard Institute of Economic Research Working Papers
1947, Harvard - Institute of Economic Research.
- Laura Veldkamp & Stijn Van Nieuwerburgh, 2005. "Information Acquisition and Portfolio Underdiversification," 2005 Meeting Papers 77, Society for Economic Dynamics.
- Karen E. Dynan & Dean M. Maki, 2001. "Does stock market wealth matter for consumption?," Finance and Economics Discussion Series 2001-23, Board of Governors of the Federal Reserve System (U.S.).
When requesting a correction, please mention this item's handle: RePEc:red:issued:08-115. 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: (Christian Zimmermann)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.