Brendan Casey

Brendan Casey is a professional trader based in Chicago, Illinois, currently working at Old Mission Capital, a quantitative, proprietary trading firm specializing in market making, arbitrage, and systematic trading strategies. At Old Mission Capital since 2013, he is responsible for executing trades across a diverse array of financial instruments and leveraging advanced quantitative models to identify and exploit market inefficiencies.

His primary focus areas include equities, ETFs, and derivatives—key sectors and asset classes within Old Mission Capital’s market making and proprietary trading activity. Brendan’s role requires strong technical and analytical expertise, with a deep emphasis on liquidity provision, electronic trading, and risk management in highly competitive global markets.

Brendan holds a Bachelor’s degree in Finance from Carnegie Mellon University, which underpins his strong foundation in financial analysis and quantitative methods. Through his decade-long tenure at Old Mission Capital, he has contributed to the firm’s growth and reputation in the trading industry, building deep expertise in high-frequency trading and systematic investment strategies.