理论上，此举有助于银行降低风险，券商可从中获益，投资者也能选择一些符合其风险偏好的债务组合。
In theory, this helps the Banks to reduce risk, makes money for intermediaries who trade the securities, and allows the investors to pick tranches of debt that match their risk appetite.
一些经济学家还对现代投资组合理论的适用性表示怀疑。
Some economists also express doubts as to the applicability of Modern Portfolio Theories. Consider this comment by a thought leader in MPT, William sharpe.
利用随机微分方程理论，对一类具有随机特征的风险投资组合问题进行深入研究。
With the theory of stochastic differential equation, the authors discuss a problem of a class of risk investment portfolio with stochastic character.
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.
但所有这些仍然不能替代马科维兹资产组合理论的主流地位，它逻辑上一致并且形式上简单，已经被广大投资者和理论界所接受。
However these theories can't take the primary place of Markowitz's Portfolio Theory, which are consistent in logic, simple in form and widely accepted by investors and men of learning.
现代投资组合理论虽已诞生了半个世纪，但有关它的研究仍层出不穷。
Although modern portfolio theory was born fifty years ago, academic articles related to it still emerge in an endless stream.
现代投资组合理论虽已诞生了半个世纪，但有关它的研究仍层出不穷。
Although modern portfolio theory was born fifty years ago, academic articles related to it still emerge in an endless stream.
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