Simplex Trading LLC
Financial ServicesIllinois, United States51-200 Employees
Simplex Trading LLC is a technology-driven proprietary market-making firm within the financial services sector. Founded around 2004 and based in Chicago, Illinois, the company operates as a mid-sized organization that emphasizes its own software and analytics to create and capitalize on financial opportunities across markets. It brings together technologists and data-driven traders to optimize existing trading strategies and develop new ones, with a focus on continuously advancing automation and market efficiency. As a market maker in equity options, Simplex Trading participates in liquidity provision and price discovery in fast-moving markets. In 2024 the firm appointed Benjamin Londergan as Managing Director of Strategic Business Development to lead growth efforts.