Ghost Tree Capital is a healthcare-oriented hedge fund headquartered in New York. It was founded in 2013 by David Kim who is the portfolio manager, Ken Greenberg and Brian Kim (Senior Analysts), and Matt Diaz (trader). Ghost Tree Capital team formerly worked at Richard Schimel's Diamondback Capital. David Kim also worked as a portfolio manager at Ken Griffin's Citadel Investment Group. With almost 90% of its equity portfolio (valued at approximately $162 million) allocated to the healthcare industry, “the firm's strategy is focused on driving strong absolute returns, independent of market cycles, based on fundamental primary research and disciplined financial analysis” (Ghost Tree).