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Mark Davies


Mark Davies is Co-Founder and CEO of S3, a full-service compliance and trade analytics software. He is responsible for the organization's business strategy, the executive team, and has oversight of the company’s day-to-day operations, including client relations, sales, and business development.

A financial services executive with over 15 years’ experience in fintech and regtech, Mr. Davies has deep industry knowledge in trading technology, particularly trade surveillance, best execution analysis, and regulatory reporting. Currently, Mr. Davies is leading the industry on market structure and regulatory reporting requirements for the Securities and Exchange Commission's (SEC) Rule 606 under Reg NMS and is sought after for his subject matter expertise.

Mr. Davies co-founded S3 in 2002. In 2004, S3 launched its first trading analytics product, redefining S3’s core business. Since then, under Mr. Davies guidance, S3 has improved trust in the industry through appropriate and intelligent disclosure via regulatory reporting and analytics.

Mr. Davies holds a Bachelor’s of Science degree in Computer Science from the Massachusetts Institute of Technology (MIT). He lives in Austin, Texas with his wife and three children.