Jiayi is a highly skilled and experienced trader of U.S. mortgage-backed securities, applying intensive modeling and analysis to unlock value in this multi-trillion dollar market. He is Co-Portfolio Manager for the Pine River Fixed Income Fund. Prior to joining Pine River in 2008, Jiayi was an Analyst for Goldman Sachs Asset Management in Beijing as part of the Fixed Income Group. While at Goldman, Jiayi was part of a quantitative team that designed and implemented a mortgage model, currency factor model and an equity risk model. During the summer of 2006, Jiayi was an intern with Goldman Sachs Fixed Income Group in New York. Jiayi received a BA in Mathematics from Tsinghua University in Beijing in 2005 and an MA in Statistics from Columbia University in 2006. He was admitted to the partnership in 2011.