Stope are for suckers. If you have a stop, you don't believe in your decision.
If you buy into a stock that has a majority newbies (sheep) and they all believe stop losses are good. Then you're also setting yourself up for failer.
Stop losses create 3 things, a cascading stop-loss ladder, a stop-loss cluster bomb, or both.
A better way, is to determine if the huge movement has been influenced by rookies (or rookies following "pros" - pumpers 'cough cough) or by pro dters, scalpers, etc.
Good luck!
