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As a leading, technology-driven, proprietary market-making firm, we work with the most advanced technology and software in the market. Since 2004, we’ve continued to remain at the forefront of the industry by driving innovation, automation and financial opportunity through: TECHNOLOGY: We build proprietary software to create and capitalize on financial opportunity. TRADING: We optimize trading strategies for existing markets and develop new strategies to best capitalize on financial market opportunity. TEAM: We combine talented and dedicated technologists with data-driven traders to solve constantly evolving puzzles in the marketplace. Our employees are truly our greatest asset. We’ve spent years building our team of talented and dedicated technologists, data-driven traders and leaders who emulate our core values. Interested in joining an open, collaborative team that allows your talents to shine? We’re always on the lookout for the best and brightest! To view our available job postings please visit www.simplextrading.com/careers

Simplex Trading LLC Questions

The Simplex Trading LLC annual revenue was $65.5 million in 2026.

Joan Rockey is the Chief Financial Officer and FINOP (Series 27) of Simplex Trading LLC.

82 people are employed at Simplex Trading LLC.

Simplex Trading LLC is based in Chicago, Illinois.

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