Improving Skewness of Mean-Variance Portfolios

Abstract

The widely accepted belief that asset returns and insurance product line margins are not normally distributed has motivated the use of skewness (or higher than second-order moments) in the context of optimal risk-reward portfolio allocation. Here we propose an optimization-based methodology to substantially improve the skewness of portfolios in the mean-variance efficient frontier. Unlike other related methods, the proposed methodology is very intuitive, noniterative, and simple to implement, and it can be readily and efficiently carried out using state-of-the-art optimization solvers. These characteristics should be very appealing to risk managers.     

New Evidence on Housing Wealth and Consumption Channels

The Journal of Real Estate Finance and Economics - This paper provides new evidence on the effect of housing wealth on consumption by focusing on the impact of home-equity extraction. We develop a...     

Designing a Countercyclical Insurance Program for Systemic Risk

This article proposes a framework for measuring and managing systemic risk. Current solvency regulations have been criticized for their focus on individual firms rather than the system as a whole. We show how an insurance program can be designed to deal with systemic risk through a risk charge on participating institutions. The risk charge is based on the generalized co‐conditional tail expectation, a conditional risk measure adapted from conditional value‐at‐risk. Current regulations have been criticized on the grounds that their capital requirements are procyclical. They require extra capital in periods of extreme stress thus exacerbating a crisis. We show how to construct a countercyclical risk charge and illustrate the approach using a numerical example.     

Focusing the catastrophic illness debate.

Unlike other aspects of the American health experience, there is a current void of information on expensive illness experiences. This paper is designed to fill this void and prrsents an analysis of the incidence and cost of catastrophic illness in the United States. Catastrophic illness is defined as an illness episode for which a person incurs $5,000 or more of medical expenses in a calendar year. This information is used to provide a framework for focusing the debate about catastrophic and national health insurance.     

Leadership run amok. The destructive potential of overachievers

The desire to achieve is a major source of strength in business, and it is on the rise. The authors' consulting firm has seen a steady increase in the extent to which achievement motivates managers. There's a dark side to the trend, however. By relentlessly focusing on tasks and goals, an executive or company can damage performance. Overachievers tend to command and coerce, stifling subordinates. Psychologist David McClelland identified three drivers of behavior: achievement, meeting a standard of excellence; affiliation, maintaining close relationships; and power, having an impact on others. He said the power motive comes in two forms: personalized, in which the leader draws strength from controlling people, and socialized, where the leader derives strength from empowering people. Studies show that great charismatic leaders are highly motivated by socialized power. To look at how motives and leadership style affect a group's work climate and performance, the authors studied 21 senior managers at IBM.The leaders who created high-performing and energizing climates got more lasting results by using a broad range of styles, choosing different ones for different circumstances. Rather than order people around, they provided vision, sought buy-in and commitment, and coached. If you're an overachiever seeking to broaden your range, you can study your actions and ask your team, peers, and manager to give you honest feedback. You can adopt specific new behaviors, such as engaging your team in a discussion of how to achieve goals, rather than issuing a set of directives. The company as a whole can play a part, too: Organizations must learn when to draw on the achievement drive and when to rein it in.     

OTC MARKET SWITCHING AND STOCK RETURNS: SOME EMPIRICAL EVIDENCE

In this study the effect on the common stock returns of 278 firms that switched OTC market segments from 1982 to 1987 is examined. It is hypothesized that abnormally positive returns are associated with news of the move from the NASDAQ to the NASDAQ National Market System (NMS) and that the market responds more favorably during pre-NMS inclusion for stocks with low versus high liquidity before switching. Using event study methodology, results support these hypotheses. Unlike post-listing studies, the evidence reveals no anomalous return behavior during the post-NMS inclusion period studied.