25 most powerful people in business

Some are empire builders. Others are hired guns. But if they truly have world-class oomph, they're on Fortune's subjective - yet really quite accurate - list of the most powerful businesspeople in the world.

Jamie Dimon
15. Jamie Dimon
Chairman and CEO, JP Morgan Chase

While Citigroup, Wachovia, and Bank of America struggle with multibillion-dollar losses, one big bank is emerging relatively unscathed from the market meltdown: J.P. Morgan Chase. That is a tribute to Jamie Dimon, its CEO since early 2006. "I think we're fine," he told a conference in mid-November. The market surely believes he is the man of the moment: Over the past three months, J.P. Morgan's stock has fallen, but it has still outperformed its major rivals.

Dimon has always shown a mastery of risk management. From 1975 to 1998 he was Sandy Weill's partner in creating the world's biggest financial services firm, Citigroup. It was Dimon who played hands-on operator to Weill's dealmaker by integrating a dazzling string of acquisitions. Fired in 1998, he rescued Chicago's Bank One, then merged with J.P. Morgan in 2004. With Citi in a swoon, Dimon is getting a sweet taste of revenge. --Shawn Tully

Steve Jobs

Rupert Murdoch

Lloyd Blankfein

Eric Schmidt, Larry Page, and Sergei Brin

Warren Buffett

Rex Tillerson

Bill Gates

Jeff Immelt

Katsuaki Watanabe

A.G. Lafley

John Chambers

Li Ka-shing

Lee Scott

Lakshmi Mittal

Jamie Dimon

Mark Hurd

James McNerney

Marius Kloppers

Steve Schwarzman

Carlos Slim

Steve Feinberg

Indra Nooyi

Ratan Tata

Bob Iger

Bernard Arnault
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