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Intergenerational Risksharing and Equilibrium Asset Prices

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  • John Y. Campbell
  • Yves Nosbusch

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Abstract

In the presence of overlapping generations, markets are incomplete because it is impossible to engage in risksharing trades with the unborn. In such an environment the government can use a social security system, with contingent taxes and benefits, to improve risksharing across generations. An interesting question is how the form of the social security system affects asset prices in equilibrium. In this paper we set up a simple model with two risky factors of production: human capital, owned by the young, and physical capital, owned by all older generations. We show that a social security system that optimally shares risks across generations exposes future generations to a share of the risk in physical capital returns. Such a system reduces precautionary saving and increases the risk-bearing capacity of the economy. Under plausible conditions it increases the riskless interest rate, lowers the price of physical capital, and reduces the risk premium on physical capital.

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Bibliographic Info

Paper provided by Financial Markets Group in its series FMG Discussion Papers with number dp589.

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Date of creation: Feb 2007
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Handle: RePEc:fmg:fmgdps:dp589

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  1. Gertler, Mark, 1999. "Government debt and social security in a life-cycle economy," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 50(1), pages 61-110, June.
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  11. John Y. Campbell & Yves Nosbusch, 2007. "Intergenerational risksharing and equilibrium asset prices," LSE Research Online Documents on Economics 24484, London School of Economics and Political Science, LSE Library.
  12. John McHale, 2001. "The Risk of Social Security Benefit-Rule Changes: Some International Evidence," NBER Chapters, in: Risk Aspects of Investment-Based Social Security Reform, pages 247-290 National Bureau of Economic Research, Inc.
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  15. Bohn, Henning, 2009. "Intergenerational risk sharing and fiscal policy," Journal of Monetary Economics, Elsevier, vol. 56(6), pages 805-816, September.
  16. Campbell, John Y. & Viceira, Luis M., 2002. "Strategic Asset Allocation: Portfolio Choice for Long-Term Investors," OUP Catalogue, Oxford University Press, number 9780198296942.
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Citations

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Cited by:
  1. Luciano Greco, 2008. "A Note on Social Security and Public Debt," "Marco Fanno" Working Papers 0083, Dipartimento di Scienze Economiche "Marco Fanno".
  2. Guibaud, Stéphane & Nosbusch, Yves & Vayanos, Dimitri, 2013. "Bond Market Clienteles, the Yield Curve, and the Optimal Maturity Structure of Government Debt," CEPR Discussion Papers 9407, C.E.P.R. Discussion Papers.
  3. Campbell, John Y. & Nosbusch, Yves, 2007. "Intergenerational risksharing and equilibrium asset prices," Journal of Monetary Economics, Elsevier, vol. 54(8), pages 2251-2268, November.
  4. Glover, Andrew & Heathcote, Jonathan & Krueger, Dirk & Rios-Rull, Jose-Victor, 2014. "Intergenerational Redistribution in the Great Recession," Staff Report 498, Federal Reserve Bank of Minneapolis.
  5. Beetsma, Roel M.W.J. & Bovenberg, A. Lans & Romp, Ward E., 2011. "Funded pensions and intergenerational and international risk sharing in general equilibrium," Journal of International Money and Finance, Elsevier, vol. 30(7), pages 1516-1534.
  6. Devis Geron, 2009. "Social Security Incidence under Uncertainty Assessing Italian Reforms," CESifo Working Paper Series 2812, CESifo Group Munich.
  7. Carlsson, Evert & Erlandzon, Karl, 2006. "The Bright Side of Shiller-Swaps: A Solution to Inter-generational Risk-sharing," Working Papers in Economics 233, University of Gothenburg, Department of Economics, revised 24 Oct 2006.

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