Coile, Courtney, and Kevin Milligan. “How portfolios evolve after retirement”. CRR WP 2005-17, Chestnut Hill, Mass.: Center for Retirement Research at Boston College, 2005. http://hdl.handle.net/2345/4184.
We study the household portfolios of the elderly using data from the Health and Retirement Study. In particular, we investigate the influence of aging and health shocks on both a household's ownership of various assets and the dollar value and share of total assets held in each asset class. We find that households decrease their ownership of most asset classes as they age, with the strongest evidence for principal residences and vehicles. Using several types of health shocks, we proceed to relate the observed asset changes to the onset of different health problems. Consistent with the previous literature, we find that the death of a spouse is a strong predictor of selling the principal residence. However, we find that more subtle health shocks have equally strong, although more gradual, impacts on the asset choices of the elderly. These findings help us to understand the methods by which and extent to which households are able to self-insure against some of the risks of old age.