A和B两只股票 perfectly negatively correlated in the economy.Stock A has expected return of 20% and standard deviation of 10% while the stock B has expected return of 8% and standard deviation of 7.5%. What is the implied risk-free rate in this economy?
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在这个领域风险的评估并不是按照上文所述方式评定的而是通过该股的基本层面以及公司的PE值与现实的空间和公司在市场中的占有率和经营范围