The effect of capital wealth on optimal diversification: Evidence from the Survey of Consumer Finances

It is well known that the wealthier the household, the larger tends to be the proportion of its total capital portfolio allocated to publicly traded stock, and the larger tends to be the number of individual stock issues included in its portfolio. Using the “homogeneous securities” case of a mean-variance model originally proposed by Michael Brennan, explicit functional forms are obtained for both the optimal proportion of the portfolio allocated to stocks and the optimal number of individual stock issues in the portfolio. An empirical evaluation of these theoretical results, using a dataset derived from the 2004 Survey of Consumer Finances, lends substantial support to the model.     

The benefits to domestically owned plants from inward direct investment: the role of vertical linkages

Abstract The paper estimates the effects of the U.S. direct investment in Canada upon productivity in domestically owned plants. We distinguish between FDI in the industry of domestically controlled plants and FDI in the industries linked through supply or use of intermediate inputs. We find that an increase in supplier FDI increases productivity growth in domestically controlled plants. The positive productivity effects of FDI are more pronounced for plants that buy more intermediates and who purchase science‐based intermediate inputs (i.e., electronics, machinery and equipment, and chemicals). Productivity of domestic plants also benefits from larger‐scale and higher rates of advanced technologies adoption.     

Comparing EthicalIdeologies AcrossCultures

Using measures developed by Singhapakdi et al. (1996, Journal of Business ethics 15, 1131–1140) the perceived importance of ethics and social responsibility (PRESOR) is measured among MBA students in the United States, Malaysia and Ukraine revealing a stockholder view and two stakeholder views. Relativism and Idealism are also measured. The scores of MBA students are compared among each other and with those of the U.S. managers who were part of the original study. Managers' scores tend to be significantly higher on the Stockholder and Stakeholder II views, and much lower on Relativism than the MBA students. The Malaysian MBA students scored higher than did the American MBA students on Relativism, Idealism and the Stockholder view. The Ukrainian MBA students' scores on the three PRESOR factors are generally similar to those of the American MBAs, while they had the highest scores of any group on the Relativism scale. Overall, the patterns of responses, as much as the significant differences on specific scales, support the notion that culture, however defined, affects both values and ethics. Several directions for future research are identified.'