The Portfolio Size Effect and Lifecycle Asset Allocation Funds: A Different Perspective
AbstractBasu and Drew (in the JPM Spring 2009 issue) argue that lifecycle asset allocation strategies are counterproductive to the retirement savings goals of typical individual investors. Because of the portfolio size effect, most portfolio growth will occur in the years just before retirement when lifecycle funds have already switched to a more conservative asset allocation. In this article, we use the same methodology as Basu and Drew, but we do not share their conclusion that the portfolio size effect soundly overturns the justification for the lifecycle asset allocation strategy. While strategies that maintain a large allocation to stocks do provide many attractive features, we aim to demonstrate that a case for supporting a lifecycle strategy can still be made with modest assumptions for risk aversion and diminishing utility from wealth. Our differing conclusion results from four factors: (1) we compare the interactions between different strategies; (2) we consider a more realistic example for the lifecycle asset allocation strategy; (3) we examine the results for 17 countries; and (4) we provide an expected utility framework to compare different strategies. We find that with a very reasonable degree of risk aversion, investors have reason to prefer the lifecycle strategy in spite of the portfolio size effect.
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Bibliographic InfoPaper provided by National Graduate Institute for Policy Studies in its series GRIPS Discussion Papers with number 10-11.
Length: 18 pages
Date of creation: Sep 2010
Date of revision:
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More information through EDIRC
lifecycle funds; target date funds; retirement planning; asset allocation; portfolio size effect;
Find related papers by JEL classification:
- D14 - Microeconomics - - Household Behavior - - - Personal Finance
- D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
- G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
- G23 - Financial Economics - - Financial Institutions and Services - - - Non-bank Financial Institutions; Financial Instruments; Institutional Investors
This paper has been announced in the following NEP Reports:
- NEP-ALL-2010-10-02 (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.:
- Mauricio Soto & Robert K. Triest & Alex Golub-Sass & Francesca Golub-Sass, 2008. "An Assessment of Life-Cycle Funds," Working Papers, Center for Retirement Research at Boston College wp2008-10, Center for Retirement Research, revised May 2008.
Blog mentionsAs found by EconAcademics.org, the blog aggregator for Economics research:
- Retirement Planning and Worst-Case Scenarios
by Wade Pfau in Pensions, Retirement Planning, and Economics Blog on 2011-07-02 14:45:00
- Pfau, Wade Donald, 2011. "Safe Savings Rates: A New Approach to Retirement Planning over the Lifecycle," MPRA Paper 28796, University Library of Munich, Germany.
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