A data graph tracks the movement of stocks on the stock exchange in Germany. (Photographer: Alex Kraus/Bloomberg)
If you are a believer in the Efficient Market Hypothesis, stop reading here. If, however, you believe that superior returns over the long term can be achieved, read on. If you need back-tested, empirical proof before you accept any hypothesis; again, stop reading. Because what follows is based on personal experience and self-analysis.