This work aims the development of an enhanced portfolio selection method, which is based on the classical portfolio theory proposed by Markowitz (1952) and incorporates the local Gaussian correlation model for optimization. This novel method of portfolio selection incorporates two assumptions: the non-linearity of returns and the empirical observation that the relation between assets is dynamic...

This paper is an empirical study on Harry Markowitz’s work on Modern Portfolio Theory (MPT). The model assumes the normality of assets’ return. The paper examined the Zimbabwe Stock Exchange by mathematical and statistical methods for normality of assets’ returns. We studied the effect of the parameters, Skewness and Kurtosis for different time series data. We tried to figure it out which data ...

With the aim of portfolio optimization and management, this article utilizes the Clayton-copula along with copula theory measures. Portfolio-Optimization is one of the activities in investment funds. Thus, it is essential to select an appropriate optimization method. In modern financial analyses, there is growing evidence indicating the distribution of proceeds of financial properties is not cu...

The main purpose of this research is portfolio optimization in Tehran securities exchange using the black hole algorithm and the Gravitational Research algorithm. We also propose an algorithm named Hybrid Algorithm which combines the two algorithms above to cover the weaknesses of these two algorithms. Finally we compare the results with the Markowitz model and choose the optimal algorithm.<br ...

The old adage about putting all of one’s eggs in one basket was thought wise long before the advent of modern portfolio theory and the important results of Markowitz (1959) and others. However, despite the anecdotal imperative to investors to diversify their portfolios, the empirical reality is that diversification rarely takes place as recommended by portfolio theory. In this paper, I demonstr...

The mean-variance methodology for the portfolio selection problem, originally proposed by Markowitz, has been one of the most important research fields in modern finance. In this paper we will assume that (i) each investor can assign a welfare, or utility, score to competing investment portfolios based on the expected return and risk of the portfolios; and (ii) the rates of return on securities...

To reduce risk in investment and at the same time optimize returns, it is necessary to establish a series of stocks that have high as well asto select stock with negative variance risk. In this research, an efficient frontier approach by Harry Markowitz will be applied JII shares during period 2009 - 2019 so portfolio low optimal return can formed return.