David Abrams, who manages nearly $9 billion with his fund Abrams Capital, rarely makes public appearances. He gave career advice to attendees at a New York conference on Friday that included students looking to land jobs on Wall Street. David Abrams, who has worked on Wall Street for over 20 years, manages nearly $9 billion at his Boston-based hedge fund Abrams Capital. He also rarely makes public appearances, with hedge funders describing him as a "unicorn," because he's often talked about, but never seen.