The very successful traders I’ve known are very aggressive. When they’re right, they press their advantage. They add to good positions or keep re-entering in the direction of their idea as long as nothing is proving them wrong. “No one ever went broke taking a profit” is not how the best traders operate. What Dr. Kiev was saying was get out of losing ideas quickly, but really milk the winners. A good trade is valid until proven wrong. Just a few more big winners make a big performance difference by the end of a year. Risk management is not just cutting losers short; it’s also ensuring that the average size of your winners handily outstrips that of the losers.