In the past two years, pnc Fi-nancial Services Group Inc.'s chairman and CEO, James Rohr, has placed a large chunk of the company's destiny in the hands of CIO Timothy Shack. He tapped Shack to head much of PNC's back-office processing businesses, including treasury-management operations and subsidiaries that service mutual funds and commercial real-estate loans. These businesses are a cor-nerstone of PNC's operations, contributing more than a fifth of its $5.1 billion in revenue last year. Not bad for the son of a Pittsburgh steelworker. Tom Whitford, who's worked with Shack for 15 years and is PNC's chief risk officer, says one of hack's strengths is his feel for the interplay between tech-nology and business. Shack also has a drive for excellence, as surveys of internal and external customers show. "Tim holds himself account- able for the businesses he serves almost as much as much as the business heads themselves," Whitford says.
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