"How do you decide when to buy or sell?" is a question I get often from investors and traders. After all, you can pick a great stock, but if your timing is wrong, you'll lose money. Early in my career, when I was first studying technical analysis - the use of market data and charts - I came across a simple but effective rule to make buy and sell decisions easier. I use support and resistance levels to time my entries and exits. Support is a level where a stock stops going down. It could be for a variety of reasons, but that price level shows over and over again that it acts as a floor for the stock. You can see what I'm describing in this chart of GrowGeneration (Nasdaq: GRWG). Every time the stock dropped to about $37, it bounced. That $37 area serves as support. If you were looking to buy the stock, the support line (or close to it) would be a good place to get in because if the stock breaks support, that suggests something in the market has changed and you can cut your losses quickly, keeping them small. So buying near support lowers your risk. And in fact, GrowGeneration's stock did break beneath support on Thursday, as seen in the chart below. When you see a stock break a strong level of support, that's your sign to head for the exit. I generally want to see a drop of about 3% below the support to feel confident that the move is real and not market noise. It's not a guarantee that the stock is going lower, but it does suggest that the psychology of the market has changed. Buyers stopped stepping in to buy the stock at $37. We don't always know why, but they stopped. Support does not have to be a flat line at one price. Look at this chart of Morgan Stanley (NYSE: MS). The blue line is called an up trend line. It's a line of support that is rising. Every time the stock hits the trend line, it bounces. Again, as a stock approaches its trend line (support), it's a good spot to enter a trade. If it breaks below the trend line by 3% or falls below the previous low, that's a good spot to get out. |
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