How do I know when to sell if my stock is going up like a rocket?

So let's say that your stock is going up, up, up like a rocket. How do you know when to sell it? The question of when you should sell a winning stock is the topic of this article.
Everyone knows that the trick to winning in the stock market is by buying stocks when they are really low, and then selling them when they get really high. Okay, this is just common sense. But what do you do when your stock is high? You know that you are supposed to sell it eventually, but when do you sell it? When do you know that it's not going to go higher? How do you decide that it's time to take your profits and run? Should you hang around waiting for whether or not you end up finding signs that the stock is going to reverse direction, or should you just sell when you are making enough profit on your stock to fulfill your investment goals?

Here are some signs that will help you know that a stock is reaching its peak and you will want to think about selling it soon. First of all, look at the fundamentals. The fundamentals of the company are the sales, the company's debt, the cash flow of the company, and other basic information about the company's performance. The company might still be performing well, but the fundamentals might be showing signs of having problems. If you can catch the signs of the fundamentals flagging before they start to affect the value of the stock, then you can sell the stock and make a good amount of money on it before the stock plummets. If you keep a sharp eye out on the fundamentals, then you can make a healthy profit on the stock.
Another way that you can decide when to sell a winning stock is to decide before hand. Set a price where you want to the stock to reach. When it reaches that particular price, then you just automatically sell. Or you can set a floor on the stock's price, so that it falls below that level, then you automatically sell it. Then you are setting your losses. This is called a stop-loss. A third thing that you can do is to watch the dividends. Are the dividends being cut? Is the company reducing the dividends that they normally pay out? Are they cutting the dividends entirely? This is a sign that the company is struggling. They are looking for somewhere to cut costs so that they can continue to keep their head above water. This sign of financial difficulties is an indicator that you should be selling the stocks.
So there are a few other ways that you can know whether or not you should sell your winning stock. Is there suddenly a whole lot of hype focused on your stock? If so, then you should probably sell right then. A lot of hype means that there is going to be a huge build up in price that will eventually end up in a collapse because of the amount of inexperienced investors that are buying into the stock. Watch this entire process carefully so that you don't end up losing money.
Another thing that you should keep track of is the rate of growth on your stocks. Have your stock been growing and growing? Does the growth start slowing down? Does it suddenly stop growing? Then you should probably sell, because the chances are that then the stock is going to fall soon. Ultimately, you are going to have to decide whether or not you are comfortable selling your stock or whether or not you want to hold on to it. But there are warning signs that you are going to want to look out for to know when to sell your stock.