NO.PZ2019012201000035
问题如下:
Initially, Fund ABC held active positions in two real estate stocks—one was overweight by 1 %, and the other was underweight by 1%. Fund ABC traded back to benchmark weights on those two stocks. Then, ABC selected two different stocks that were held at benchmark weights, one automobile stock and one technology stock. ABC over-weighted the automobile stock by 1% and underweighted the technology stock by 1%. What was the effect of ABC’s two trades on its active risk? ABC’s active risk:
选项:
A.decreased.
B.remained unchanged.
C.increased.
解释:
C is correct.
考点:Active Share and Active Risk
解析:主动风险受股票之间相关性的影响。不同行业的两只股票的相关性低于同一行业两只股票的相关性。因此,新头寸(汽车/科技股)的相关性低于初始头寸(房地产/房地产)的相关性。两只股票的相关性较低,两只股票头寸对主动风险的贡献就越大。
1. 我想确认一下我对题目的理解对不对, 一开始是两个房地产股票调回跟benchmark一样, 这时候active risk应该下降, 但我又调整了汽车跟科技的权重, 导致active risk上升, 这样对吗?
2. 那如果第二次调整是两个生物医药公司的话, active risk应该也是上升对吧(毕竟跟bemchmark不一样)? 只是上升的没有两个不同行业的多?