Another book to disappoint you, a discussion about what someone else would do (retail investors) when a stock price rises or falls isnt going to help your situation (unless they are a model for poor decision-making). When you dont have a clear understanding and inside track to the developments within the company (new products or services, regulation changes, earnings, management changes) and how it relates to peer companies and the sector then you sell, maybe not all at once but you begin the process to know where you are. You allow yourself to step away from the process and see that if the price rises, you might make less, and if the price declines, you lost less and can exit the rest of the position knowing you allowed yourself a chance to briefly wait for further gains.
