In contrast to the standard economics theory, an analysis of the Survey of Consumer Finance shows that wealthy investors have a higher return on their stocks than their poorer counterparts. The paper presents a general financial and economic theory of risk and search behavior to address the...

This paper presents a continuous time model of a firm that can dynamically adjust both its capital structure and its investment choices. The model extends the existing literature by endogenizing the investment choice as well as firm value, which are both determined by an exogenous price process...

Tobin's Q exceeds one, even without any adjustment costs, for a firm that earns rents as a result of monopoly power or of decreasing returns to scale in production. Even when there are no adjustment costs and marginal Q is always equal to one, Tobin's Q is informative about the firm's growth...

This paper studies the provision of incentives to reallocate capital when managers are reluctant to relinquish control and have private information about the productivity of assets under their control. We show that when managers get private benefits from running projects substantial bonuses are...

As the millenium draws to an end, the threat posed by the Year 2000 (Y2K) problem is inducing vast private and public spending on its remediation. In this paper, we embed the Y2K problem into a dynamic general equilibrium framework. We model the Y2K problem as an anticipated, permanent loss to...

This appendix provides a detailed exposition of the computational method applied to the model of Campbell (1997). Heterogeneity in the production sector of that model implies that its prices and quantities are contnuous functions on the real line rather than scalars. The computational method...

In Lentz and Mortensen (2005) we formulate and estimate a market equilibrium model of endogenous growth through product innovation in the spirit of Klette and Kortum (2004). In this paper, we provide a quantitative solution to the planner’s problem in the modeled environment. We find that...

We study optimal capital taxation in a limited commitment environment. Our environment consists of a continuum of households with idiosyncratic labor shocks, who have access to a complete contingent claims market. Financial contracts are not perfectly enforceable; as in Kehoe and Levine (1993),...