• Co-founder, CEO, and Chief Risk Officer of Marshall Wace Asset Management, a London-based hedge fund, since 1997.
• Led Marshall Wace to be named the "best-performing hedge fund in 2015" by Institutional Investor, managing $22 billion in client money.
• Co-founded Absolute Return for Kids (ARK), a children's non-profit, in 2001.
• Became the youngest director at S. G. Warburg & Co. at age 25, serving for 11 years.
• Previously held roles including head of European equity sales, head of proprietary trading, and head of international trading at S. G. Warburg & Co.
• Served as head of equity and derivative trading at Deutsche Morgan Grenfell starting in 1995.

Biography