According to diversification principle in investment, suppose you invest Stock X and Stock Y with equal funds, which of the foll

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问题 According to diversification principle in investment, suppose you invest Stock X and Stock Y with equal funds, which of the following is not true?______.

选项 A、If X and Y are perfectly negatively correlated, the risk of the portfolio is neither reduced nor increased.
B、If X and Y are perfectly negatively correlated, the risk of the portfolio is perfectly offset.
C、If X and Y are perfectly positively correlated, the risk of the portfolio is neither reduced nor increased.
D、If X and Y are totally independent with each other, the risk of the portfolio is reduced.

答案A

解析 答案为A项。投资分散理论认为,如果两种股票完全负相关,组合的风险被全部抵销;如果两种股票完全正相关,组合的风险不减少也不扩大;投资组合可以降低风险。一般而言,股票的种类越多,风险越少。两种互不相关的股票组成投资组合可以降低风险。本题中只有A项的论述不正确,故选A项。
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