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CFA二级
包含CFA二级传统在线课程、通关课程及试题相关提问答疑;
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Reading50里面的EXAMPLE 9的问题2的解答没有看懂。 题目是Suppose the investor predicts Assets #1 and #2 to outperform and that Assets #3 and #4 will underperform. Conceptually speaking (i.e., exact numbers are not necessary), how will these scores affect the information coefficient in the fundamental law compared with a prediction that Assets #1 and #3 will outperform and Assets #2 and #4 will underperform? 解答是According to the risk model, the active returns to Assets #1 and #2 tend to move together, so a forecast that both will outperform is not as ambitious as a forecast that one will outperform while the other underperforms. As a result, the information coefficient will be adjusted downward by more under the first set of forecasts than under the second set of forecasts. 我不明白的问题有两个:第一,为什么IC会be adjusted downward;第二,为什么ambitious的IC大,不ambitious的IC小?谢谢老师
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