The effect of estimation risk on optimal portfolio choice

This paper determines the effect of estimation risk on optimal portfolio choice under uncertainty. In most realistic problems, the parameters of return distributions are unknown and are estimated using available economic data. Traditional analysis neglects estimation risk by treating the estimated parameters as if they were the true parameters to determine the optimal choice under uncertainty. We show that for normally distributed returns and ‘non-informative’ or ‘invariant’ priors, the admissible set of portfolios taking the estimation uncertainty into account is identical to that given by traditional analysis. However, as a result of estimation risk, the optimal portfolio choice differs from that obtained by traditional analysis. For other plausible priors, the admissible set, and consequently the optimal choice, is shown to differ from that in traditional analysis.     

'Nonprofits' need surplus too

By definition profit refers to the difference between revenue and expenses. In for-profit organizations profit or surplus gives a return to the owners of the company and serves as a source of financing for capital acquisitions and working capital. Nonprofit organizations, which are not allowed a surplus, don't suffer on the first count because they have no owners. But they do suffer on the second count because, if expected to grow, they need to finance asset replacement and growth. In these days when funds for long-term debt are becoming scarcer, this author asserts, the need for regulators to allow 'nonprofits' to keep a surplus is increasing. In this article, he argues for a surplus and then discusses how managers and regulators can determine how much a nonprofit organization should be allowed. He presents a combination of a modified version of the return-on-asset pricing model used in for-profit organizations and a model for assessing working capital needs associated with growth.     

Measures used to evaluate industrial marketing activities

Given the importance of controlling marketing efforts, a study was conducted of industrial manufacturers to determine the extent of their use of various measures to evaluate different marketing activities. The predominate measures used for evaluation were sales volume with much less utilization of profitability, productivity, and expense measures.     

Multimarket trading and liquidity: a transaction data analysis of Canada–US interlistings

We use transaction data for Toronto Stock Exchange (TSE) listed stocks to examine the impact on trading costs of the decision to interlist on a US exchange. We measure trading costs using both ‘posted’ bid-ask spreads and ‘effective’ bid-ask spreads that measure actual transaction prices relative to standing bid-ask quotes. After controlling for price level, trade size and trading volume effects, we find that overall posted and effective spreads in the domestic (TSE) market decrease subsequent to the interlisting. However, the decrease in trading costs is concentrated in those TSE stocks that experience a significant shift of total trading volume (TSE and US) to the US exchange after listing. We interpret this result in the context of theories of multimarket trading as a competitive response by TSE market makers to the additional presence of US market makers.     

Emotion As Well As Reason: Getting Students Beyond "Interpersonal Accountability"

The paper notes the recent spread of business ethics courses in American higher education, observing that teachers trained in economics have not readily incorporated ethical notions or theory into regular courses, such as finance, management, accounting, and marketing. The presumed ethically neutral, value-free approach of economists, who dominate business courses, is increasingly inadequate to meet the needs of business managers – or of business students. Technological and political changes, creating an interdependent environment within which managers operate, have eroded older ethics based on tradition and common backgrounds. They have also raised ethical issues of new orders of complexity. With corporate business managers finding ethical concerns more pressing matters than do many teachers, the paper offers some tentative answers to three questions about how to interest business students in ethical issues: What Approach to Business Ethics Gets student's Attention? What Is the Value of Simulations and Games? What Can Be Said About the Business System And Its Values? The answer to the first question is simulations and games. Case method analysis is serviceable, engaging students' intellect, but all too often without emotional involvement or self-revelation. Experiential learning through class-room games accomplish both engagement and involvement in ways that are exceedingly helpful to business students, who have had "less occasion for critical reflection on self and world than have others of their age." The answer to the second question is: They engage the whole student, stimulating the player to examine the source of her ethical strengths and the reasons for ethical lapses. Generating emotional involvement the games leverage and enhance reasoning, allowing students to learn more about their own values and question their own behavior. The answer to the third question is: A socially justifiable (community-legitimated) competitive market system requires of its managerial participants an emotionally informed response – as well as a rational analysis and use of business techniques. Business operates with enhanced effectiveness efficiency at appropriate levels of such virtues as loyalty, trustworthiness and cooperativeness; they ensure externality benefits as well as promote justice for its own ultimate social justification.