As market turmoil battered the stocks of the world's top 100 financial services companies, U.S. institutions managed to retain their leading share of the group's market capitalization.

The new BankAmerica Corp. and Citigroup ranked first and second globally on Sept. 30. Overall, U.S. banks, thrifts, brokerages, insurers, and other financial firms held 44 of the top 100 spots in an American Banker survey.

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