Hirshleifer et al. (2009) document a negative relation between abnormal trading volume in stocks with earnings announcements and the number of “competing” earnings announcements on the same day. They argue that this relation stems from distraction on the part of fundamental investors. We...

In this paper we present a budget-constrained optimal control model aimed at finding the optimal enforcement profile for a street-level, illicit drug crackdown operation. The objective is defined as minimizing the number of dealers dealing at the end of the crackdown operation, using this as a...