John P. Costas, a former bond trader and co-head of Fixed income at Credit Suisse First Boston and head of Fixed Income Trading at Union Bank of Switzerland in 1998, was appointed CEO of UBS's investment banking division, which originated in SBC's Warburg Dillon Read division and was renamed UBS Warburg in December 2001.[1][118] In an attempt to break into the elite bulge bracket of investment banks, in which UBS then had little success while rival Credit Suisse was establishing itself as a major player on Wall Street with the acquisition of Donaldson, Lufkin & Jenrette in 2000, Costas shifted the growth strategy from acquiring entire firms to hiring individual investment bankers or teams of bankers from rival firms.[119][120] Costas had followed a similar approach in building out the UBS fixed income business, hiring over 500 sales and trading personnel and increasing revenues from US$300 million in 1998 to over US$3 billion by 2001.