The empirical literature on the asset allocation and medical expenditures ofU.S. households consistently shows that risky portfolio shares are increasing inboth wealth and health whereas health investment shares are decreasing in thesesame variables. Despite this evidence, most of the existing...

In the standard real options approach to investment under uncertainty, agents formulate optimal policies under the assumptions of risk neutrality or perfect capital markets. However in most situations, corporate executives face incomplete markets either because they receive compensation packages...

In the standard real options approach to investment under uncertainty, agents formulate optimal policies under the assumptions of risk neutrality or perfect capital markets. Although the assumptions of risk neutrality or market completeness are crucial to the implications of the approach, they...

Theories of investment suggest that the option value of waiting to invest is significant in many branches of economics, where investment is irreversible. The existing literature has generally failed to account for the general equilibrium feedback effects of lumpy investments on optimal...