@Iwanowitsch No, because you don't know these points. That would be classic market timing, which is beaten by time in the market. Returns are determined on just a few days a year; if you are not invested for just a few days a year, this can have a massive negative impact on performance.
@Aktienmasseurgreat report. I recommend the s&p 500 to anyone who wants to save. It is the benchmark against which every major investor measures himself.