For example, there is such a popular trading idea — during the fall of the stock market, track stocks, which do not fall or fall less than the rest of the stocks and assign them the status of `` stocks are stronger than the market ''. It is understood that these shares will simply fly into space after the market falls and then moves up..
Like, at first sight, logical idea. But on closer inspection, it is clear that he is looking into the future, since we will learn about the cessation of the market fall and its subsequent upward movement only after the fact, when this event will take place.
