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The Matrix Mission

Matrix Applications is a fintech leader in the fixed income capital markets, offering front-to-back support for firms both big and small. We utilize our industry and technological expertise to deliver simple solutions to complex problems. Our forward-thinking team aims to empower our clients to take advantage of an ever-changing landscape by being ahead of industry trends.

Our History

Matrix Applications is a New York-based fintech service bureau that offers a suite of collateral management, margining and clearing systems for institutional fixed income trading and equities securities lending. We are a team of capital markets and systems professionals delivering financial technology solutions to institutional firms since 2000. We work hands-on with our clients to identify an optimal mix of services to best fit their needs, from systems to back-office operations assistance.

With in-house and offshore developers, we provide our clients with the right solution at the right price. Comprised of industry veterans and financial professionals, we leverage our extensive technical experience, a deep network across the finance industry and a team of ops, regulatory and legal gurus to deliver bespoke managed services for firms big and small.

Matrix Applications is a wholly-owned subsidiary of South Street Securities Holdings, Inc.



Matrix is established to service its affiliated companies with fixed income trading technology and back-office solutions.



Matrix expands from servicing only affiliates, to supporting an external client base, including one of the largest US-based clearing banks and a UK-based bank. Matrix also introduces its Managed Services for the back-office. 



Matrix develops MarginCalculator to offer a simple solution to the complex problem of margining forward-settling TBA transactions for compliance with FINRA Rule 4210.



Matrix acquires ReadQ Technologies and welcomes them into the family, expanding its offerings to include QTIX, a multi-asset trade processing system.


Early 2022

Matrix rebrands QTIX to ‘Elevate’ in addition to adding Next Generation (NG) enhancements and functionalities to the system.


Late 2022

Matrix’s parent company, South Street Securities Holdings, secures $90 million in capital from BlackRock and BC Partners, allowing Matrix to further accelerate growth.


World Class Infrastructure

Matrix has high-availability data centers in New Jersey and Illinois. The infrastructure is fully redundant: dual carriers, redundant ISP’s, clustered server farms, near real-time replication on next generation security appliances. Services include communications, database administration, server maintenance, firewalls, information security, data backup, and user access, among others.

Our primary data center adheres to and follows a strategy of sustainable environmental policies with notable highlights including:

  • Over 90% of our global data center energy consumption was covered by renewable energy sources.
  • Ranked 4th on the U.S Environmental Protection Agency's National Top 100 Partners list.
  • Won third consecutive EPA Green Power Leadership Award.