48. Kenneth I. Chenault
48. Kenneth I. Chenault
Chairman and CEO, American Express

American Express has performed strongly this year under Chenault, although the company did suffer from aggressively pursuing high-spending individuals in U.S. regions that were hit hard by the real estate boom and subsequent bust. In addition to the soft economy and competing card issuers, Amex's potential downside risks include new-fangled electronic payment services like Google Wallet.


By Richard McGill Murphy, contributor - Last updated November 17 2011: 5:58 PM ET