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We derive empirical tests for stochastic dominance that allow for diversification between choice alternatives. The tests can be computed using straightforward linear programming. Bootstrapping techniques and asymptotic distribution theory can approximate the sampling properties of the test...
Persistent link: https://www.econbiz.de/10005288711
Markowitz's mean-variance (MV) efficient portfolio selection is one of the most widely used approaches in solving portfolio diversification problem. However, contrary to the notion of diversification, MV approach often leads to portfolios highly concentrated on a few assets. Also, this method...
Persistent link: https://www.econbiz.de/10005292294
In this paper we show that by assuming a constant variance/covariance matrix over the holding period, the VaR limits can often be exceeded within the relevant horizon period. To minimize this risk, we formulate the problem in terms of portfolio selection and propose an innovative methodology...
Persistent link: https://www.econbiz.de/10005370546
The purpose of this study is to apply polynomial goal programming to establish a new portfolio selection model that considers the tradeoffs between expected return and Value-at-Risk (VaR) of portfolios and the flexibility of incorporating investor's preferences. The historical data of 10...
Persistent link: https://www.econbiz.de/10005080731
The classical models of portfolio selection could not be applied on a market were the efficient market hypothesis is not valid (at least in a "weak" sense). The aim of this paper is to enlighten the difficulties of portfolio construction in a financial market with institutional and structural...
Persistent link: https://www.econbiz.de/10005087850
Overall, 72 subjects invest their endowment in four risky assets. Each com-bination of assets yields the same expected return and variance of returns. Illusion of expertise prevails when one prefers nevertheless the self-selected portfolio. After being randomly assigned to groups of four...
Persistent link: https://www.econbiz.de/10005013059
Persistent link: https://www.econbiz.de/10005014972
The development and use of dynamic optimization model is extremely important in financial markets. The classical mean-variance portfolio model assumes the expected returns are known with perfect precision. In practice, however, it is extremely difficult to estimate precisely. While portfolios...
Persistent link: https://www.econbiz.de/10005343063
In this paper, we propose use of the influence diagram for stock portfolio selection. We use an algorithm that applies the mutual information as the metric to guide the refinement of the influence diagram. We applied the algorithm to the conceptual refinement of the influence diagram. We tested...
Persistent link: https://www.econbiz.de/10005345554
Persistent link: https://www.econbiz.de/10005345664