miffy2019-10-28 20:53:54

Q. Portfolio managers, who are maximizing risk-adjusted returns, will seek to invest less in securities with: A. lower values for nonsystematic variance. B. values of nonsystematic variance equal to 0. C. higher values for nonsystematic variance. C is correct. Since managers are concerned with maximizing risk-adjusted returns, securities with greater nonsystematic risk should be given less weight in the portfolio. 请教老师，这道题从题干到答案理解都不是很清晰，能否帮解释下，谢谢！