As Stanley Druckenmiller says: buy first, analyze later. Markets move fast. If you spend months analyzing a stock, you risk missing a huge part of the upside. If you don’t want to miss the train, you buy a solid starter position as soon as you spot a trend or a strong concept. Then you take your time to analyze. If you realize you were wrong, you sell. If not, you add to the position. For some reason, many people, after seeing the stock they’re studying suddenly shoot higher, end up waiting for a pullback and never buying at all, even though the stock is likely destined to rise much further.