淡江大學機構典藏:Item 987654321/120735
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    題名: Guaranteed Rate of Return for Excess Investment in a Fuzzy Portfolio Analysis
    作者: Tsaur, Ruey-Chyn;Chiu, Chien-Liang;Huang, Yin-Yin
    關鍵詞: Fuzzy portfolio model;Efficient portfolio;Guaranteed rate of return;Excess investment
    日期: 2020-11-21
    上傳時間: 2021-05-05 12:12:51 (UTC+8)
    出版者: Springer
    摘要: With increasing profit in securities investment, portfolio analysis has become a major topic for investors. We propose a fuzzy portfolio model as it is an efficient portfolio selection method associated with uncertain or vague returns. Although many researchers focus on studying the fuzzy portfolio model, they do not consider excess investment based on the selected guaranteed rates of return for some securities. To manage such an investment, a new fuzzy return function—where some securities are considered for excess investment based on the selected guaranteed rate of return—is introduced to improve the possibilistic mean and variance values, leading to a revised fuzzy portfolio model. Accordingly, to set certain securities for excess investment in the fuzzy return function, efficient portfolios for each selected guaranteed rate of return can be obtained under different levels of investment risk. Finally, we present a numerical example of a portfolio selection problem to illustrate the proposed model. This example shows that the expected rate of return of a lower guaranteed rate of return is larger than that of a higher guaranteed rate of return under different levels of investment risks. The portfolio analysis with some guaranteed rate of returns can provide more invested risk selection.
    關聯: International Journal of Fuzzy Systems 23, p.94-106
    DOI: 10.1007/s40815-020-00990-y
    顯示於類別:[管理科學學系暨研究所] 期刊論文

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