6 Steven Cohen
SAC Capital Advisors
$900 million
Stevie Cohen’s 13 percent net return for 2007 was his worst in about five years, but his annualized returns still exceed 40 percent even after his 43 percent performance fee. The comparatively subpar showing by SAC Capital didn’t prevent Cohen, 51, from lifting his firm’s assets to $16 billion, nearly double what it had two years ago.