For Lynn Challenger, the last seven years have been one big project: transforming a farflung order processing operation into a centralized, multi-asset trading hub where the traders take responsibility for each and every order. Mellon Capital Management’s managing director of global trading oversees nine traders trading equities, futures, currencies, fixed income securities and swaps from the quantitative money manager’s base in San Francisco. All told, group turnover is about $1.2 trillion annually.

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