1. As a whole, in the long term, it is; 2

来源: 于 2014-10-02 13:12:02 [旧帖] [给我悄悄话] 本文已被阅读：次

2. No. It is not at any single time point.

As a result, a strategy is to allocate some money to the sector(s) you really understand and thus might have an edge. And put the rest in index ETF/funds. If you have skills, then you could beat the market. Don't mistake luck for skills, though.