Trading breakouts of 20-day high or low prices is one of the most popular trend-following methods used by commodity trading advisors. This technique was created by Richard Donchian but made famous by a successful trading group led by Richard Dennis known as the "Turtles." Over long time periods, the 20-day breakout strategy tends to be profitable, but it also is subject to large drawdowns and repeated false breakouts.

The Turtle Soup Plus One method is designed specifically to take advantage of these false moves. For a sell set-up, a market must close at a new 20-day high and its previous 20-day high must have been more than four days ago. If the next day the market trades below the previous day's high, it is considered a false breakout and a sell signal is triggered. (For buys, reverse the rules.)

These are the futures that have made new 20-day highs for the day and qualify as Turtle Soup Plus One sell set-ups if they reverse. More information on trading the strategy can be found in the book "Street Smarts" by Larry Connors and Linda Raschke.