Portfolios are not new, but their use in initial and continuing professional development in medicine is still in its infancy. In this context, this guide has the following aims: to give the background and an educational rationale for portfolio-based learning and assessment in medical education; to examine how and where portfolios have been used for professional development both within and beyon...

This study aims at getting a better performance for optimal stock portfolios by modeling stocks prices dynamics through a continuous paths Levy process. To this end, the share prices are simulated using a multi-dimensional geometric Brownian motion model. Then, we use the results to form the optimal portfolio by maximizing the Sharpe ratio and comparing the findings with the outputs of the conv...

Robust portfolios resolve the sensitivity issue identified as a concern in implementing mean-variance analysis. Because robust approaches are not widely used in practice due to a limited understanding regarding the portfolios constructed from these methods, we present an analysis of the composition of robust equity portfolios. We find that compared to the Markowitz mean-variance formulation, ro...

this study examines the empirical validity of claims that value stocks (stocks with high ratios of book value to price) have higher average returns than growth stocks (stocks with low book-to-market ratios). the analyses are performed using data pertaining to 70 firms for the period 1381-1389 and used the panel data methodology. this paper contains significant and consistent results. the result...

the research problem investigated in this paper is modeling volatility and analyzing risk and return’s relationship in tehran stock exchange using garch-family models including garch(1,1), garch(2,2), egarch(1,1), pgarch(1,1), tgarch(1,1), garch(1,1)-m and cgarch(1,1). using the daily returns of tehran stock exchange companies, we focused on two portfolios of all the companies during a 10-year-...

A student portfolio is a collection of products and processes selected and organized to highlight specific aspects of the portfolio creator and his or her work. What goes into the portfolio depends on its purpose and usually includes reflection on the materials included and the portfolio as a whole. Portfolios may be required for a course, a major, or a career goal. Electronic portfolios may co...

ABSTRACT We propose a new asset pricing framework in which all securities' signals predict each individual return. While the literature focuses on own‐signal predictability, assuming equal strength across securities, our includes cross‐predictability—leading to three main results. First, we derive optimal strategy closed form. It consists of eigenvectors “prediction matrix,” call “principal por...

Despite a number of papers that discuss the advantages of increased size on risk levels in real estate portfolios there is remarkably little empirical evidence based on actual portfolios. The objective of this paper is to remedy this deficiency by examining the portfolio risk of a large sample of actual property data over the period 1981 to 1996. The results show that all that can be said is th...