问题如下：
Initially, Fund TMT held active positions in two realestate stocks—one was over-weighted by 1 %, and the other was under-weighted by 1%. Fund TMT traded back to benchmark weights on those two stocks. Then, TMT selected two different stocks that were held at benchmark weights, one automobile stock and one technology stock. TMT over-weighted the automobile stock by 1% and underweighted the technology stock by 1%. What was the effect of TMT’s two trades on its active share? TMT’s active share:
选项：
A. decreased.
B. remained
unchanged.
C. increased.
解释：
B is correct.
考点：Active Share and Active Risk
解析：只有当投资组合的主动权重绝对值的总和发生变化时，主动份额才会发生变化。在TMT基金的两笔交易中，初始头寸和新头寸都涉及两只股票，一只减持1%，另一只增持1%，因此主动权重绝对值的总和没有变化，所以主动份额并没有改变。
TMT selected two different stocks that were held at benchmark weights, one automobile stock and one technology stock。 这句话意思是选了两个不同的股票，但是这两个股票跟benchmark同样的权重。 新选的两只股票是benchmark里面的股票吗？如果不是benchmark里面的股票，这题应该就做不出来了叭？没有比较意义了？
