Hedge fund honcho runs Highbridge Capital with grade-school buddy Henry Swieca. Investments soured when computer-controlled quantitative fund lost 14% last year. Rebound: quant fund up 15% this year. Firm's flagship fund returned 8.5% net of fees in 2007. Founded Highbridge hedge fund and private equity outfit in 1992. Sold 55% stake to JPMorgan in 2004 for more than $1.3 billion; duo still controls investment decisions. Assets flat in past year at $28 billion. Dubin: married doctor who is a former Miss Sweden; couple funded breast cancer center at Mount Sinai Hospital in New York. Mr. Dubin is Managing Partner and Co-Founder of Highbridge Capital Management, an alternative investment management company based in New York with offices in London, Hong Kong and Boston. Prior to co-founding Highbridge Capital Management in 1992, Mr. Dubin and his partner Henry Swieca, founded Dubin & Swieca an asset management company specializing in alternative investment strategies. Dubin & Swieca is recognized as being one of the early advocates of multi-manager hedge fund portfolios guided by the principles of Modern Portfolio Theory. Mr. Dubin is a founding board member and current Board Chair of The Robin Hood Foundation. Since its inception in 1988, Robin Hood has made over $300 million in grants to the most effective poverty fighting organizations in New York City by applying investment principles to charitable giving. He is also on the Board of Trustees of Mount Sinai Hospital in New York. Mr. Dubin received a B.A. in Economics at the State University of New York at Stony Brook in 1978. He is married to (physician) Dr. Eva Andersson-Dubin and they have three children.