South Street Securities Holdings Inc.
Capital MarketsNew York, United States11-50 Employees
South Street Securities Holdings Inc. operates in the capital markets through a family of affiliated firms. Its core unit, South Street Securities LLC, provides repo financing for U.S. Treasuries and Agency MBS, along with hedging for TBA mortgage originations and algorithmic trade execution. The group also includes Matrix Applications LLC, which delivers technology and back-office services; AmeriVet Securities, Inc., a FINRA and SIPC member that operates as an SEC-registered broker-dealer certified as a service-disabled veteran-owned business; and GX2 Systems LLC, a fintech software developer serving electronic trading in fixed income and futures. The company is based in New York, New York. Through these affiliates it serves institutional clients in fixed income and mortgage markets with financing, hedging, execution, and back-office capabilities, supported by technology and trading infrastructure. Recent leadership changes at the subsidiaries—such as the appointment of Jason Schuit as President of South Street Securities LLC in 2025—indicate ongoing expansion.
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