IIf it's a list of powerful American women, chances are Sallie Krawcheck is on it. After all, with $1.7 trillion in assets under management at Citi, she runs the world's second-largest wealth management division, and has a reputation-earned during her years as an independent-minded securities analyst-as "Mrs. Clean." Asked if she gets tired of answering the same questions about her ascent, she answers with her characteristic sense of humor: "It's better than working."

It's no wonder: work has been a little turbulent recently. Krawcheck became CEO of Citi Global Wealth Management in early 2007, amid a crisis that cost her predecessor his job. A few months later, CEO Charles Prince was forced out as subprime-related losses mounted. Meanwhile, Krawcheck - whose division also includes the private bank, investment research and Smith Barney retail brokerage-is trying to keep her clients calm amid a gut-wrenching financial crisis.

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