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Social Security Investment in Equities

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Author Info
Peter Diamond
John Geanakoplos

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Abstract

This paper explores the general-equilibrium impact of social security portfolio diversification into private securities, either through the trust fund or private accounts. The analysis depends critically on heterogeneities in saving, production, assets, and taxes. Limited diversification weakly increases interest rates, reduces the expected return on short-term investment (and the equity premium), decreases safe investment, increases risky investment, and increases a suitably weighted social welfare function. However, the effects on aggregate investment, long-term capital values, and the utility of young savers hinges on assumptions about technology. Aggregate investment and long-term asset values can move in opposite directions.

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Publisher Info
Article provided by American Economic Association in its journal American Economic Review.

Volume (Year): 93 (2003)
Issue (Month): 4 (September)
Pages: 1047-1074
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Handle: RePEc:aea:aecrev:v:93:y:2003:i:4:p:1047-1074

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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.:
  1. Diamond, Peter A & Yaari, Menahem, 1972. "Implications of the Theory of Rationing for Consumer Choice Under Uncertainty," American Economic Review, American Economic Association, vol. 62(3), pages 333-43, June. [Downloadable!] (restricted)
  2. Feldstein, Martin S, 1985. "The Optimal Level of Social Security Benefits," The Quarterly Journal of Economics, MIT Press, vol. 100(2), pages 303-20, May. [Downloadable!] (restricted)
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  3. Olivia S. Mitchell & James F. Moore, 1997. "Retirement Wealth Accumulation and Decumulation: New Developments and Outstanding Opportunities," Center for Financial Institutions Working Papers 97-12, Wharton School Center for Financial Institutions, University of Pennsylvania. [Downloadable!]
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  4. Andrew B. Abel, 2000. "The Effects of Investing Social Security Funds in the Stock Market When Fixed Costs Prevent Some Households from Holding Stocks," NBER Working Papers 7739, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  5. Peter Diamond, 2004. "Social Security," American Economic Review, American Economic Association, vol. 94(1), pages 1-24, March. [Downloadable!] (restricted)
  6. Fischer, Stanley, 1972. "Assets, Contingent Commodities, and the Slutsky Equations," Econometrica, Econometric Society, vol. 40(2), pages 371-85, March. [Downloadable!] (restricted)
  7. Arthur B. Kennickell & Martha Starr-McCluer & Annika E. Sunden, 1997. "Family finances in the U.S.: recent evidence from the Survey of Consumer Finances," Federal Reserve Bulletin, Board of Governors of the Federal Reserve System (U.S.), issue Jan, pages 1-24. [Downloadable!]
  8. John Geanakoplos & Olivia S. Mitchell & Stephen P. Zeldes, . "Social Security Money's Worth," Pension Research Council Working Papers 97-20, Wharton School Pension Research Council, University of Pennsylvania.
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(explanations, 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.)

  1. Kent Smetters, 2005. "Social Security Privatization with Elastic Labor Supply and Second-Best Taxes," NBER Working Papers 11101, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  2. Erik Hurst & Paul Willen, 2004. "Social Security and unsecured debt," Public Policy Discussion Paper 04-10, Federal Reserve Bank of Boston. [Downloadable!]
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  3. Francisco Gomes & Alexander Michaelides, 2004. "Aggregate Implications Of Defined Benefit And Defined Contribution Systems," Working Papers, Center for Retirement Research at Boston College 2003-16, Center for Retirement Research. [Downloadable!]
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  4. Piero Gottardi & Felix Kubler, 2006. "Social Security and Risk Sharing," Working Papers 2006_38, University of Venice "Ca' Foscari", Department of Economics. [Downloadable!]
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