gtag('config', 'AW-829395478'); About | S3

About S3

S3 is a full service compliance and trade analytics software company providing simple and elegant solutions to address client needs for regulatory reporting, trade surveillance, and best execution analytics, across multiple asset classes. S3’s robust product suite is used today by many of the world’s largest financial institutions, broker-dealers, exchanges, bulge bracket and retail banks, offering exceptional trading analytics technology, and all-in-one regulatory reporting solutions for U.S. and International financial markets.
Mark Davies

Mark Davies

Chief Executive Officer

Mark Davies is Co-Founder and CEO of S3, a fullservice compliance and trade analytics software company that services many of the world’s largest financial institutions and exchanges.  Davies is responsible for the company’s overall business strategy, as well as the daily operations required to deliver an exceptional experience to S3’s valued clients.

S3 was founded in 2001 and discovered its niche after launching its first trading analytics product in 2004.  Since then, Davies has shaped S3 to become the trusted industry standard for international regulatory reporting, 605 / 606 reporting, trade surveillance, CAT, TCA, and best execution analytics across multiple asset classes.

Davies is an industry thought leader on market structure and regulatory requirements, particularly the SEC’s Rule 606.  He is Co-Chair of the FIF Rule 606 Committee and a member of several other industry groups, including the STA Listed Options Committee, the Security Traders Association of NY, the Dallas Security Traders Association, and SIFMA.  He lives in Austin, Texas with his wife and three children.

John Standerfer

John Standerfer

Chief Technology Officer

A highly accomplished software executive possessing more than a decade of experience in the finance industry, John oversees the technical development of products and provides product direction for the company.

Prior to S3, John led the development of advanced web based trading tools for Charles Schwab’s Active Trader division. These tools provided web based traders with access to streaming quotes, trades, charts and news. In addition to being used by millions of traders, they were also the focus on multiple national advertising campaigns.

As an expert observer of the financial markets, John has spoken at the Federal Reserve and provided opinions for some of the world’s largest financial services firms as well as Reuters, Bloomberg, USA Today, Fox Business News and others. His opinion pieces on financial and media issues have been featured on heavily-trafficked web sites like the Huffington Post.

Tobin Griser

Tobin Griser

Executive Vice President of Client Services

As Executive Vice President of Client Services, Tobin manages the client relationship, maintaining and improving the customer experience and coordinating client requests.  He positions S3 for ongoing success by reinforcing both pillars of its offerings – innovative trade monitoring software and unmatched client services.  Tobin has been an invaluable member of the S3 team for six years and has been a driving force behind the expansion of its services as well as the Company’s growth.

Tobin has over 20 years of experience in the financial services industry, and has focused on Brokerage Operations, Compliance, and Risk Management throughout his illustrious career.  Prior to S3, Tobin served as a Risk Manager at The Charles Schwab Corporation’s Active Trader Division for Equities and Options.  He has a Bachelor of Arts degree in Business Economics from the University of Texas at Austin.

Rob Olkiewicz

Rob Olkiewicz

Vice President of Client Integration

As Vice President of Client Integration, Rob supports the customer onboarding process, ensuring that S3’s tools are implemented and tailored to the exact specifications of new clients from the outset of engagement.  During his eight-year tenure with S3, Rob has played a major role in the growth of the Company’s client base and in enhancing its software architecture.  He understands the importance of customizing S3’s services in support of every client’s market structure analysis needs, and is focused specifically on the onboarding process to ensure smooth deployment of the Company’s tools for all new customers.

Rob has over 20 years of experience in client services and information technology roles, serving in various senior level Quality Engineering, Development, and Management positions.  Prior to joining S3 in 2008, he served as Senior Quality Engineer at Dell Inc., where he managed teams to optimize and stress test Computer Telephony Integration (CTI) environments.  Previously, Rob worked for MCI Inc. in multiple functional areas over a 15-year tenure, and attended Briar Cliff University.

Jeremy Vest

Jeremy Vest

Vice President of Sales

As Vice President and Head of Sales for S3, Jeremy Vest oversees the market in the U.S. and Canada.

He is focused on developing new and existing relationships and growing the company’s client base. Jeremy is highly visible in the financial services industry which enables him to form strategic alliances to enhance customer relationships. 

Jeremy’s knowledge and understanding of S3’s product offerings, including, All in One Compliance Solutions, aligns with S3’s commitment to clients – to provide superior service and products that aid in maintaining healthy capital markets.

Jeremy previously worked for S3 as a Senior Business Analyst and Product Owner from 2006-2011, during which time he worked directly with existing and prospective clients to identify, define, and implement new software solutions. Prior, he worked for two years at The Hewlett-Packard Company, where he held the position of B2B Online Store Product Manager. Jeremy graduated with a Bachelor of Arts in Mathematics from the University of Texas at Austin.

Josh Barry

Josh Barry

Chief Software Architect

Josh is responsible for making sure all the different systems work together in a cohesive manner and charting the path to bring new software/features into production.

He has 15 plus years experience designing, developing and maintaining high performance real-time systems handling market data and order and trade data

Before joining S3 in 2006, Josh led the team responsible for real-time account, order and trade data at Charles Schwab. He has a Bachelor of Science degree in Computer Science from the University of Texas at Dallas.