Warner Leedy

Warner Leedy is an options trader at Old Mission in Chicago, Illinois, where he specializes in the pricing and risk management of equity options. In his current role, he leverages advanced quantitative strategies to provide liquidity and efficiently execute trades across U.S. equity derivatives markets, contributing to the firm’s market making operations.

Leedy brings over a decade of experience in the financial industry, having previously worked as an options trader at another quantitative trading firm from 2015 to 2019. Before that, he served as the Head of European equity options market making at Susquehanna International Group (SIG), where he was responsible for overseeing trading desks focused on European equity derivatives, driving growth, and managing complex risk exposures.

He holds a Bachelor of Science in Computer Science from the California Institute of Technology, providing him with a strong technical foundation in quantitative finance and systematic trading. Throughout his career, Leedy has been recognized for his expertise in equity derivatives, options pricing, and automated trading systems, and has played key roles in both U.S. and European equity options markets.