Sang Yeun Shim is a co-founder and the managing member of Quants.Net LLC. He has over twenty years of experience in financial industry as a quantitative analyst. Before founding Quants.Net, he was a director/quant at the Yield Book, a fixed-income analytics business of Citigroup/London Stock Exchange Group. He holds a Ph.D. in Mathematics from NYU Courant Institute and pursued post-doctoral research there.

Jaehyuk Choi is a co-founder and academic advisor to Quants.Net. He has been the Mathematics of Finance (MAFN) Program Director at Columbia Univ. since 2025. Previously, he was an Associate Professor at Peking University HSBC Business School. Before transitioning to academia, he spent nine years as a fixed-income quant at Goldman Sachs in New York and Hong Kong. His research interests encompass mathematical finance, machine learning, and numerical methods. He holds a Ph.D. in Applied Mathematics from MIT.

 LinkedIn