The correspondence between the demand for capital and various measures of Tobin’s q often is tenuous (Abel and Blanchard 1986; Hayashi 1982), at times even perverse. Among the possible explanations for this apparent challenge to the q theory of investment, this paper considers the consequences of...

Within optimal investment programs, the accumulation of capital is a stable function of marginal q. Much of the interest in q, however, derives from its potential to reflect the demand for capital when the optimal program changes. If the marginal return on capital diminishes as capital...

This paper assesses the effects of insurance and capital requirements on assets' equilibrium returns in a capital-asset-pricing model in which intermediaries possess better information than the public about the yields on a set of assets. Equilibrium returns depend on two risk premiums that...

Increasingly, people are depending on 401(k) and similar defined contribution plans sponsored by their employers for their retirement income. As a result, participants in these plans also are paying more of their plans’ costs, ranging from administration and sales expenses to the cost of...

The financial crisis has dramatically demonstrated how a collapse in equity prices can decimate retirement accounts. The crisis highlights the fragility of existing 401(k) plans as the only supplement to Social Security and has sparked proposals to reform the retirement income system. One...

The rate of national saving declined sharply in the 1980s. Some of the explanations for this puzzling performance have considered the influence of capital gains, a reduction in the need for precautionary saving, a decline in the need for retirement saving, the effect of slower income growth, and...

While the prospect for equity values naturally concerns traders and investors, it also is a concern for public policy. Because investors’ wealth depends on the value of corporate equity, the demand for consumption goods can vary with the price of stocks. The valuation of corporations’...