in financial matters, portfolio can be interpreted as a combination or a series of investments hold by an institution or a person. portfolio optimization is one of the most important concerns of investors for maximizing the portfolio in financial markets. the formation of portfolio is a vital and critical decision for the companies.  in fact, the selection of portfolio is to specify the capital...

In a managed floating exchange rate regime, one of the most important issues is the degree to which the monetary authorities intervene in the foreign exchange market.  The appropriate level of intervention in the foreign exchange market can be discussed in a framework which emphasizes the trade-off between changes in the country’s level of international reserves and minimizes the country’s real...

there have been several efforts in the literature to extract as much information as possible from the financial networks. most of the research has been concerned about the hierarchical structures, clustering, topology and also the behavior of the market network; but not a notable work on the network filtration exists. this paper proposes a stock market filtering model using the correlation - ba...

The gaining returns in line with risks is always a major concern for market play-ers. This study compared the selection of stock portfolios based on the strategy of buying and retaining winning stocks and the purchase strategy based on the level of investment risks. In this study, the two-step optimization algorithms NSGA-II and SPEA-II were used to optimize the stock portfolios. In order to de...

The service industry and business-to-business companies have remained at the forefront of studies into internal marketing due to the close contact between employees and customers in such companies. Marketers and industry experts have shown particular interest to the supermarket sector over the past years due to the varied fluctuations in performance that have been reported. Consumers have negli...

In this paper, we study an investment problem in which two asymmetric firms face competition and the regime characterizing economic conditions follows Markov switching. We derive the value functions and investment thresholds of a leader and a follower. One of the interesting results is that in contrast to the case of no regime switching, even if the current market size is small, both advantaged...

In this research, we proposed a new metaheuristic technique for stock portfolio multi-objective optimization employing the combination of Strength Pareto Evolutionary Algorithm (SPEA), Adaptive Neuro-Fuzzy Inference System (ANFIS) and Arbitrage Pricing Theory (APT). To generate the more precise model, ANFIS has implemented to envisage long-term movement values of the Tehran Stock Exchange (TSE)...

This paper communicates the overall behaviour of the stock exchange. Basically, stock exchange is marketing for companies/group(s) assets to sell their shares and in-return generates revenues to invest and grow their company/business. The attitude of giant investors keeps on changing their move to destabilise the market so that the trivial investors cannot become stable/grow and compel to sell ...

An asymptotic expansion scheme in finance initiated by Kunitomo and Takahashi [15] and Yoshida[68] is a widely applicable methodology for analytic approximation of the expectation of a certain functional of diffusion processes. [46], [47] and [53] provide explicit formulas of conditional expectations necessary for the asymptotic expansion up to the third order. In general, the crucial step in p...

 The foreign exchange market (FX market) accounts for 40% of the total volume of the world’s e-commerce by its own. Based on statistics, sometimes up to 90 per cent of the traders lose their total capital in this market just within six months to one year and leave this market. The probability of loss in the FX market can be estimated by probability theory. The present paper intends to demonst...