Keep in mind facebook employees are not in any way/shape/form "halfway decent traders". The halfway decent trader group will take profit off the table the momen

Keep in mind facebook employees are not in any way/shape/form "halfway decent traders". The halfway decent trader group will take profit off the table the moment they can - if at some later time it looks like there is a profitable long position to be had then they take it. Amateurs take/hold positions when there is nothing happening at that moment. tldr; You don't hold something because you think it will go up. You open long when it is going up and you think it will continue. The reason for the 90/90/90 statistic is because of mindsets like those facebook employees you mention.