25. Heidi Miller
CEO, Treasury and Securities Services, J.P. Morgan Chase (JPM)
2005 rank: 28
Big results from Miller, who has transformed the $8.8 billion custody, cash-management, and clearinghouse business into a leaner, meaner machine. For the first half of 2006, operating profits are up 32%, while revenues have increased 13%, to $4.3 billion. And Miller's longtime mentor, Jamie Dimon, is now CEO.
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