Asset Allocation and Risk Allocation: Can Social Security Improve Its Future Solvency Problem by Investing in Private Securities?
This paper examines the economics of investing the central trust fund of Social Security in private securities. We note that switching from a policy of having the trust fund invest solely in special issue Treasury bonds to one where some of the portfolio holds common stocks amounts to an asset swap. Such an asset swap does not increase national saving, wealth or GDP. We also show that it is far from a sure thing in terms of improving the finances of the Social Security system. The asset swap is deemed successful if the stock portfolio generates sufficient cash to pay off the interest and principal of the bonds and still have money left over. It is deemed a failure otherwise. By using historical data and a bootstrap statistical technique, we estimate that the exchange of ten or twenty year bonds for a stock portfolio would worsen social security's finances roughly twenty to twenty-five percent of the time. Further, failures are autocorrelated meaning that if the strategy fails one year it is extremely likely to fail the next. Such high failure rates imply that the defined benefit structure of benefits becomes less credible with stocks in the trust fund.
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- Robert J. Shiller, 1998.
"Social Security and Institutions for Intergenerational, Intragenerational and International Risk Sharing,"
Cowles Foundation Discussion Papers
1185, Cowles Foundation for Research in Economics, Yale University.
- Shiller, Robert J., 1999. "Social security and institutions for intergenerational, intragenerational, and international risk-sharing," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 50(1), pages 165-204, June.
- Robert J. Shiller, 1998. "Social Security and Institutions for Intergenerational, Intragenerational, and International Risk Sharing," NBER Working Papers 6641, National Bureau of Economic Research, Inc.
- Robert J. Shiller, 1998. "Social Security and Institutions for Intergenerational, Intragenerational, and International Risk Sharing," JCPR Working Papers 43, Northwestern University/University of Chicago Joint Center for Poverty Research.
- Fama, Eugene F & French, Kenneth R, 1988. "Permanent and Temporary Components of Stock Prices," Journal of Political Economy, University of Chicago Press, vol. 96(2), pages 246-73, April.
- Thomas E. MaCurdy & John B. Shoven, 1992. "Stocks, Bonds, and Pension Wealth," NBER Chapters, in: Topics in the Economics of Aging, pages 61-78 National Bureau of Economic Research, Inc.
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