About SILEXX FINANCIAL SYSTEMS, LLC

Let's get personal

Who we are.

Silexx is a team of highly experienced financial industry professionals with a unified passion for uncompromising technology. Our core focus is serving the needs of our clients and we take great pride finding solutions for tough problems and see the hard work reflected in our clients’ satisfaction. We persistently push technology boundaries and work alongside our clients to generate new ideas and improve their effectiveness, making success not just an option, but reality.

Our Mission.

Silexx strives to empower individuals and institutions alike to navigate the complexities of the financial markets with sophisticated and superior technology. We continuously learn, improve and adapt to ensure that our clients have access to the very best execution, real-time analytics and risk management technology.

Our Management Team.

CEO & Founding Partner

Thomas J. Frey

Thomas founded Silexx Financial Systems to bring his passion for technology to the Buy- & Sell-Side and provide sophisticated solutions to empower clients to successfully navigate the financial markets.

A native of Munich, Germany, prior to founding Silexx Financial Systems, Thomas was working as a consultant for various hedge funds and brokerage firms, building technology solutions for order routing, market data distribution and algorithmic trading.

Founding Partner

Michael S. Williams

Michael brings more than 20 years and a wide breadth of experience in financial markets to his role at Silexx.

Prior to founding Silexx Financial Systems, Michael was an options market maker and has floor brokerage experience as a member of the Stock Exchange. He has worked as an institutional floor broker representing Goldman Sachs, Morgan Stanley, and Swiss Bank. Michael has lectured throughout the country on derivatives and risk management. He is the co-author of Fundamentals of the Options Market, published by McGraw Hill and is the author of an economic newsletter, "Market Preview."

Our Partners.

Executing Brokers

  • DASH Financial
  • Interactive Brokers
  • Bank of America Merrill Lynch
  • FIS
  • Goldman Sachs
  • Credit Suisse
  • Instinet
  • Convergex
  • Liquidpoint
  • Susquehanna
  • Societe Generale
  • ABN AMRO
  • LEK Securities
  • Morgan Stanley
  • Liquidity Book
  • Knight Capital Group
  • EZX
  • Fundamental Interactions
  • Bloomberg
  • Quantitative Brokers
  • WEX
  • SpeedRoute
  • RBC Capital Markets

Clearing Firms

  • Interactive Brokers
  • Bank of America Merrill Lynch
  • Goldman Sachs
  • Credit Suisse
  • ABN AMRO
  • Morgan Stanley
  • Apex Clearing
  • LEK Securities
  • Wedbush
  • RBC Capital Markets
  • Societe Generale
  • Industrial and Commercial Bank of China

Brokerage & Trading Firms

  • eRoom Securities
  • Kershner Trading Group
  • Lightspeed Institutional
  • Sage Trader
  • TradingBlock

Data Providers

  • ICE Data Services