Buffett says that some people are just not psychologically fit to own stocks, and selling a stock just because it goes down is dumb - https://www.grahamvalue.com/blog/benjamin-grahams-notes-selling-value-investors FAIR USE COPYRIGHT NOTICE This video and this youtube channel in general may contain certain copyrighted works that were not specifically authorized to be used by the copyright holder(s), but which in good faith are believed to be protected by the fair use doctrine. If you have any specific concerns about this video or its position on the fair use defense, please contact at www.grahamvalue.com/contact so we can discuss amicably. Thank you.