Thesys Technologies, LLC is a New York-based financial technology firm that specializes in providing high-performance trading solutions, market data, and infrastructure services for capital markets. The company's mission is to deliver robust, low-latency technology to professional traders, brokers, and exchanges. Historically, Thesys is well-known for being selected by the U.S. Securities and Exchange Commission (SEC) to build and operate the Consolidated Audit Trail (CAT), the comprehensive database for tracking all U.S. equity and options market activity. The business unit responsible for CAT, Thesys CAT LLC, was later acquired by Cboe Global Markets. Thesys continues to operate, focusing on its suite of proprietary trading technology products.

Founded in

United States