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A Comment on James M. Poterba's ‘Demographic Structure and Asset Returns’

The Review of Economics and Statistics 2001 83(4), 585-588
November 01 2001 A Comment on James M. Poterba's ‘Demographic Structure and Asset Returns’ John Y. Campbell John Y. Campbell Harvard University Search for other works by this author on: This Site Google Scholar Author and Article Information John Y. Campbell Harvard University Received: June 12 2001 Accepted: June 12 2001 Online ISSN: 1530-9142 Print ISSN: 0034-6535 © 2001 President and Fellows of Harvard College and the Massachusetts Institute of Technology2001 The Review of Economics and Statistics (2001) 83 (4): 585–588. https://doi.org/10.1162/003465301753237669 Article history Received: June 12 2001 Accepted: June 12 2001 Cite Icon Cite Permissions Share Icon Share Facebook Twitter LinkedIn Email Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Search Site Citation John Y. Campbell; A Comment on James M. Poterba's ‘Demographic Structure and Asset Returns’. The Review of Economics and Statistics 2001; 83 (4): 585–588. doi: https://doi.org/10.1162/003465301753237669 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThe Review of Economics and Statistics Search Advanced Search This content is only available as a PDF. © 2001 President and Fellows of Harvard College and the Massachusetts Institute of Technology2001 Article PDF first page preview Close Modal You do not currently have access to this content.

Who Should Buy Long-Term Bonds?

American Economic Review 2001 91(1), 99-127 open access
According to conventional wisdom, long-term bonds are appropriate for conservative long-term investors. This paper develops a model of optimal consumption and portfolio choice for infinite-lived investors with recursive utility who face stochastic interest rates, solves the model using an approximate analytical method, and evaluates conventional wisdom. As risk aversion increases, the myopic component of risky asset demand disappears but the intertemporal hedging component does not. Conservative investors hold assets to hedge the risk that real interest rates will decline. Long-term inflation-indexed bonds are most suitable for this purpose, but nominal bonds may also be used if inflation risk is low.

Stock Market Mean Reversion and the Optimal Equity Allocation of a Long-Lived Investor

Review of Finance 2001 5(3), 269-292 open access
This paper solves numerically the intertemporal consumption and portfolio choice problem of an infinitely-lived investor who faces a time-varying equity premium. The solutions we obtain are very similar to the approximate analytical solutions of Campbell and Viceira (1999), except at the upper extreme of the state space where both the numerical consumption and portfolio rules flatten out. We also consider a constrained version of the problem in which the investor faces borrowing and short-sales restrictions. These constraints bind when the equity premium moves away from its mean in either direction, and are particularly severe for risk-tolerant investors. The constraints have substantial effects on optimal consumption, but much more modest effects on optimal portfolio choice in the region of the state space where they are not binding.

Have Individual Stocks Become More Volatile? An Empirical Exploration of Idiosyncratic Risk

Journal of Finance 2001 56(1), 1-43
This paper uses a disaggregated approach to study the volatility of common stocks at the market, industry, and firm levels. Over the period from 1962 to 1997 there has been a noticeable increase in firm‐level volatility relative to market volatility. Accordingly, correlations among individual stocks and the explanatory power of the market model for a typical stock have declined, whereas the number of stocks needed to achieve a given level of diversification has increased. All the volatility measures move together countercyclically and help to predict GDP growth. Market volatility tends to lead the other volatility series. Factors that may be responsible for these findings are suggested.