If you thought Wall Street was about alpha males standing in trading pits hollering at each other, think again. That world is dead. Now, the world"s money is traded by computer code, inside black boxes in heavily guarded buildings. Even the experts entrusted with your money don"t know what"s happening to it. And the very few who do aren"t about to tell -because they"re making a killing. This is a market that"s rigged, out of control and out of sight; a market in which the chief need is for speed; and in which traders would sell their grandmothers for a microsecond.