In modern portfolio theory, it is common practice to first compute the risk-reward efficient frontier and then to support an individual investor in selecting a portfolio that meets his/her preferences for profitability and risk. Potential flaws include (a) the assumption that past data provide...

In this paper we construct the minimal entropy martingale for semi-Markov regime switching interest rate models using some general entropy measures. We prove that, for the one-period model, the minimal entropy martingale for semi-Markov processes in the case of the Tsallis and Kaniadakis...

This paper is dedicated to the conceptual and methodologic development of the optimization for asset portofolio and we attack the problem in three stages: selecting assets, risk estimation, solving the optimization problem. We select assets in the portfolio using principal components analysis in...

This paper presents the basic qualities of an investment in shares. First, there are described the ground rules of the financial investments and then are detailed the investments in shares. There are presented the fundamental analysis and the technical analysis of a share and trying to find a...