Horizon Length and Portfolio Risk
In this paper, we compare the attitude towards current risk of two expected-utility-maximizing investors that are identical except that the first investor will live longer than the" second one. In one of the models under consideration, there are two assets at every period. The" first asset has a zero sure return, whereas the second asset is risky without serial correlation of" yields. It is often suggested that the young investor should purchase more of the risky asset than" the old investor in such circumstances. We show that a necessary and sufficient condition to get" this property is that the Arrow-Pratt index of absolute tolerance (Tu) be convex. If we allow for a" positive risk-free rate, the necessary and sufficient condition is Tu convex extends the well-known result that investors are myopic in this model if and only if the utility" function exhibits constant relative risk aversion.
|Date of creation:||Oct 1997|
|Date of revision:|
|Publication status:||published as Gollier, Christian and Richard J. Zeckhauser. "Horizon Length And Portfolio Risk," Journal of Risk and Uncertainty, 2002, v24(3,May), 195-212.|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
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- Guiso, Luigi & Jappelli, Tullio & Terlizzese, Daniele, 1994.
"Income Risk, Borrowing Constraints and Portfolio Choice,"
CEPR Discussion Papers
888, C.E.P.R. Discussion Papers.
- Guiso, Luigi & Jappelli, Tullio & Terlizzese, Daniele, 1996. "Income Risk, Borrowing Constraints, and Portfolio Choice," American Economic Review, American Economic Association, vol. 86(1), pages 158-72, March.
- Gollier, C. & Lindsey, J. & Zeckhauser, R., 1996.
"Investment Flexibility and the Acceptance of Risk,"
96.421, Toulouse - GREMAQ.
- Dybvig, Philip H & Lippman, Steven A, 1983. "An Alternative Characterization of Decreasing Absolute Risk Aversion," Econometrica, Econometric Society, vol. 51(1), pages 223-24, January.
- Merton, Robert C, 1969. "Lifetime Portfolio Selection under Uncertainty: The Continuous-Time Case," The Review of Economics and Statistics, MIT Press, vol. 51(3), pages 247-57, August.
- He Hua & Huang Chi-fu, 1994. "Consumption-Portfolio Policies: An Inverse Optimal Problem," Journal of Economic Theory, Elsevier, vol. 62(2), pages 257-293, April.
- Zvi Bodie & Robert C. Merton & William F. Samuelson, 1992.
"Labor Supply Flexibility and Portfolio Choice in a Life-Cycle Model,"
NBER Working Papers
3954, National Bureau of Economic Research, Inc.
- Bodie, Zvi & Merton, Robert C. & Samuelson, William F., 1992. "Labor supply flexibility and portfolio choice in a life cycle model," Journal of Economic Dynamics and Control, Elsevier, vol. 16(3-4), pages 427-449.
- Cox, John C. & Leland, Hayne E., 2000. "On dynamic investment strategies," Journal of Economic Dynamics and Control, Elsevier, vol. 24(11-12), pages 1859-1880, October.
- Miles S. Kimball, 1991.
"Standard Risk Aversion,"
NBER Technical Working Papers
0099, National Bureau of Economic Research, Inc.
- Kimball, Miles S, 1990.
"Precautionary Saving in the Small and in the Large,"
Econometric Society, vol. 58(1), pages 53-73, January.
- Miles S. Kimball, 1989. "Precautionary Saving in the Small and in the Large," NBER Working Papers 2848, National Bureau of Economic Research, Inc.
- Kessler, Denis & Wolff, Edward N, 1991. "A Comparative Analysis of Household Wealth Patterns in France and the United States," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 37(3), pages 249-66, September.
- Pratt, John W & Zeckhauser, Richard J, 1987. "Proper Risk Aversion," Econometrica, Econometric Society, vol. 55(1), pages 143-54, January.
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