Raj Rajaratnam

Father ran asian operations for singer Sewing Co. Sri Lanka native studied engineering at U. of Sussex in England, then M.B.A. at Wharton 1983. Early career at investment banking boutique Needham & Co. Became president in 1991. Founded hedge fund Galleon Group 6 years later; making big bets on health care, technology companies. Annual return: 21% net of fees since 1997. Today firm manages $7.5 billion across 6 funds. Last year flagship fund returned 30% before fees.