After the initial design of a portfolio the fund manager is constantly confronted with the following decision problem of Portfolio Re-Optimization: Due to changes on the market the given portfolio has become infeasible because of violations to the investment guidelines and/or sub-optimal due to under-performance with respect to yield, risk etc. In this daily situation the fund manager has to re...

the present study is an attempt toward evaluating the performance of portfolios and assets selecting using modified mean-variance models by utilizing a non-parametric efficiency analysis tool, namely data envelopment analysis (dea). huge amounts of money are being invested in financial market. as a result, portfolio performance evaluation has created a great deal of interest among people. we kn...

This research shows that a portfolio of wheat varieties could enhance profitability and reduce risk over the selection of a single variety for Kansas wheat producers. Many Kansas wheat farmers select varieties solely based on published average yields. This study uses portfolio theory from business investment analysis to find the optimal, yield-maximizing and riskminimizing combination of wheat ...

The growth-optimal portfolio optimization strategy pioneered by Kelly is based on constant portfolio rebalancing which makes it sensitive to transaction fees. We examine the effect of fees on an example of a risky asset with a binary return distribution and show that the fees may give rise to an optimal period of portfolio rebalancing. The optimal period is found analytically in the case of log...

Our objective is to develop a methodology to detect regions in risk-return space where the out-of-sample performance of portfolios is consistent with their in-sample performance. We use the Berkowitz statistic to evaluate the accuracy of the density forecast, derived from in-sample portfolio returns, of out-of-sample portfolio returns. Defined by its coordinates in risk-return space, a portfoli...

This paper hypothesizes that more active informed trading and intense information production help investors detect the low persistence of accruals, and consequently reduce the magnitude of accruals mis-pricing. Applying both the Mishkin (1983) and the hedge-portfolio tests to subsamples sorted on the basis of a two-way classification – accruals and one of the information production measures, we...

Background: The Modern Electronic Technologies have had a deep impact on traditional methods of education and brought forth new methods for effective education. Electronic portfolio is one of the newest methods of teaching. Therefore, the purpose of the present research was to study the impact of using e-portfolio on Nursing Students' Learning in Physiology Course. Methods: The design of the st...

The theory of functionally generated portfolios (FGPs) is an aspect of the continuous-time, continuouspath Stochastic Portfolio Theory of Robert Fernholz. FGPs have been formulated to yield a master equation a description of their return relative to a passive (buy-and-hold) benchmark portfolio serving as the numéraire. This description has proven to be analytically very useful, as it is both pa...

On the basis of Markowitz mean-variance framework, a new optimal portfolio selection approach is presented. The portfolio selection model proposed in the approach includes the expected return, the risk, and especially a quadratic type transaction cost of a portfolio. Using this model may yield an optimal portfolio solution that maximizes return, and minimizes risk, as well as also minimizes tra...