Tartaglia's Quest: Find The Evil Twin

Tunzio Tartaglia has had enough of big Wall Street firms. After 11 years, the 54-year-old trader is striking off on his own. His goal: to duplicate his success at Morgan Stanley & Co., where from 1984 to 1989 Tartaglia traded for Morgan's account. His best year was 1987, when his "black box" earned $30 million, he says. Now, with backing from a foreign bank, he has launched a high-tech trading firm, DerivaTech Inc. in Lexington, Mass.

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