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....

Households with familiarity biases tilt their portfolios toward a few risky assets. The resulting mean-variance loss from portfolio underdiversification is equivalent to only a modest reduction of about 1 percent per year in a household's portfolio return. However, once we consider also the...

It is well established that international portfolios are far substantially under-diversified, contrary to predictions of traditional finance theory. Even after controlling for market segmentation and “investability” of foreign markets, portfolio under-diversification remains a puzzle. I...

The article presents an overview of the assumptions and unintended consequences of the widespread adoption of modern portfolio theory (MPT) in the context of the growth of large institutional investors. We examine the many so-called risk management practices and financial products that have been...

The literature suggests that while decentralized decision-making can allow for greater specialization in an organization, it heightens the cost of coordinating decisions. The mutual fund industry – in particular, sole- and team-managed balanced funds – provides an ideal setting to test the...

Many important economic and political decisions are made by teams. In the economic literature, however, the decision units are frequently modeled as individual economic agents. The paper experimentally investigates the question to what extent observed team decisions under risk are actually...

We argue a holdout is not a destructive investor behaviour but a rational investment decision. This investment decision is characterised by the mean-variance approach. We investigate intercreditor conflict by diverse portfolio structure. We demonstrate that at some point during the Greek (2012)...

Little is known about the degree to which individuals are uncertain about their future Social Security benefits, how this varies within the U.S. population, and whether this uncertainty influences financial decisions related to retirement planning. To illuminate these issues, we present...