NO.PZ201809170400000301
问题如下：
Compared with broad-market-cap weighting, the international equity strategy suggested by McMahon is most likely to:
选项：
A.
concentrate risk exposure.
B.
be based on the efficient market hypothesis.
C.
overweight stocks that recently experienced large price decreases.
解释：
A is correct. Compared with broad-market-cap weighting, passive factor-based strategies tend to concentrate risk exposure, leaving investors vulnerable during periods when the risk factor (e.g., momentum) is out of favor.
请问不是passive的strategy都是基于有效市场假说吗？还是说虽然叫passive但是我已经是active选了factors所以并不是基于有效市场假说？
