Yogo, Motohiro

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  • Publication
    Portfolio Choice in Retirement: Health Risk and the Demand for Annuities, Housing, and Risky Assets
    (2009-08-17) Yogo, Motohiro
    This paper develops a consumption and portfolio-choice model of a retiree who allocates wealth in four asset classes: a riskless bond, a risky asset, a real annuity, and housing. The retiree chooses health expenditure endogenously in response to stochastic depreciation of health. The model is calibrated to explain the joint dynamics of health expenditure, health, and asset allocation for retirees in the Health and Retirement Study, aged 65 and older. The calibrated model is used to assess the welfare gain from private annuitization. The welfare gain ranges from 13 percent of wealth at age 65 for those in worst health, to 18 percent for those in best health.
  • Publication
    Portfolio Choice in Retirement: Health Risk and the Demand for Annuities, Housing, and Risky Assets
    (2009-04-01) Yogo, Motohiro
    This paper develops a consumption and portfolio-choice model of a retiree who allocates wealth among four assets: a riskless bond, a risky asset, a real annuity, and housing. Unlike previous studies that treat health expenditures as exogenous negative income shocks, this paper builds on the Grossman model to endogenize health expenditures as investments in health. I calibrate the model to explain the joint evolution of health status and the composition of wealth for retirees, aged 65 to 96, in the Health and Retirement Study. I use the calibrated model to assess the welfare gains of an actuarially fair annuity market. The welfare gain is less than 1% of wealth for the median-health retiree at age 65, and the welfare gain is about 10% of wealth for the healthiest.