Joseph Edelman founded Perceptive Advisors in 1999. Perceptive Advisors is a biotech focused long-short hedge fund. The fund returned 129% in 1999, 155% in 2000, 39% in 2001, lost 10% in 2002, gained 53% in 2003. More recently Joe Edelman's hedge fund lost 24% in 2008, gained 24% in 2009 and 16% in 2010. The fund has nearly $500 million in assets under management. Joseph Edelman has an MBA from NYU.