DeLong (1990a) et al. show that in the presence of positive feedback traders rational speculation can be destabilizing, in that it drives the price of a risky asset above its expected value. A generalization of their seminal model with additional trading dates and an additional informative...

In a paper in this journal, Schnabel and Roumi (1989) assert that if uninsured debt is risky, a levered firm takes a casualty insurance with a positive safety loading if, and only if, the amount of debt is sufficiently high. This note shows that, in marked contrast to this assertion, the correct...