We examine the role of political ideology in portfolio formation by studying a unique set of investors whose ideology can be precisely captured by a well-defined, continuous measure and whose personal asset allocation decisions are mandatorily disclosed - namely, the members of the U.S....

Suppose that a group of agents having divergent expectations can share risks efficiently. We examine how this group should behave collectively to manage these risks. We show that the beliefs of the representative agent is in general a function of the group.s wealth level, or equivalently, that...