chaofann Stocks can go through periods of underperformance for one reason or another, and a common refrain among investors may be to ask "what does the market know that I don't?" Having been in the investment game for quite some time, I would say that more often than not, so long as you do your due diligence, the market doesn't know any more than you do. Sometimes, an individual company or sector may simply be out of favor with big institutional firms, which often adopt a herd mentality and can "window dres ...