证券投资组合是为了避免证券投资风险,确保证券投资的盈利性、流动性和安全性而对各种证券投资进行的合理搭配。证券投资具有诸多风险因素,投资者为了避免单独投资于某一种证券而遭受绝对风险,一般情况下采用分散投资策略,即将资金分散投向若干种证券,并根据其风险的大小、盈利的多少、流动能力的强弱进行合理的搭配组合,从而把证券投资的风险降到最低限度。
针对预期收益率与风险损失率为模糊数时,建立了一种具有模糊系数的证券组合投资选择模型。
A optional model of portfolio investment with fuzzy-coefficient in which profit rates and risk rates are fuzzy Numbers is presented in this paper.
旨在通过建立投资者多心理账户权重的确定方法,用以改进传统的行为证券组合理论(BPT)。
Its studied for improving the traditional behavioral portfolio theory (BPT) by dealing with weights of investors multiple mental accounts.
在本模型中综合考虑了证券组合的收益,风险,交易费用等因素,对投资者选择有效证券组合有一定的实用价值。
The profit rate, investment risk and transaction cost are synthetically considered in this new model, which is very useful in the portfolio selection.
Because we hold relatively stable, relatively well-diversified portfolios, security selection turns out not to be an important determinant of returns for most investors and market timing turns out not to be an important determinant of returns.
因为持有相对稳定,和相对分散的投资组合,证券选择不再是,决定投资者回报率的重要因素,而市场时机选择,也不会成为决定回报率的重要因素
That's not a way that we really think about it, but I do believe that the risk level of the University's portfolio is really quite low in statistical terms -much lower than the risk level that you'd have if you had a traditional portfolio dominated by marketable securities.
这一般不是我们考虑的关键,但我相信,耶鲁投资组合的风险水平,在统计数字上是非常低的,远远低于,持有一个传统的可交易证券主导的,投资组合的beta系数
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