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The Four Principles of Trading

  1. The price has the final say. You may have an opinion on the market, but it is dangerous to marry it to your positions, as famous trader Richard Dennis explained, “You don’t get any profits from fundamental analysis; you get profit from buying and selling. So why stick with the appearance when you can go right to the reality of price and analyze it better?”

  2. Follow instead of forecast. Legendary trader Paul Tudor Jones once declared that he would never hire fundamental traders who frequently tried to outwit the market and got burned, because by the time the fundamentals become clear, the trend is over. You can never know if the next trade wins or not, so simply follow your rules and see.

  3. Preserve your capital. Since the market is impossible to forecast, all great traders agree that you must limit your losses before it gets out of hand, since they have seen a lot of intelligent traders got bruised in a market crash simply because they held on to the losers or even averaged down on the way as the price became “fundamentally” attractive.

  4. Let your winners ride. The other side of the coin is not to cut the profit too soon before it can grow large. Jesse Livermore explained, “I’ve known many men who… began buying or selling stocks when prices were at the very level which should show the greatest profit. And … they made no real money out of it.” Why? They sold too soon.