Billionaire Steven Schonfeld's hedge fund was quick to adopt algo-trading strategies and now has 75 portfolio managers across the world. Schonfeld Strategic Advisors has been open to outside capital for just over three years and has bold aspirations — its chief investment officer says the goal is to be the premier equities hedge fund in the world. The firm keeps to its roots, though, with 50 old-school traders still working in Long Island, roughly half of whom have been with the firm for more than 15 years. Click here for more BI Prime stories.