Were great traders born with a natural killer instinct?

Or, could certain types of individuals be taught to become winning traders?

So they placed an ad in the back of the Barrons classifieds, seeking trading apprentices. From over thousands of applicants, just 13 were chosen on the results of a personality quiz they all took. These students entered into an intensive 2-week training program and were nicknamed the 'Turtles' after comparing the process of training traders to raising turtles on a farm in Singapore that the founder had recently visited, or so the legend says. It may also be the name of a band.