South Street Securities Funding, LLC and South Street Securities, LLC Surveillance Report
Company Profile
South Street Securities Funding, LLC (“SSSF”) is an intermediate holding company with its only significant asset representing a common equity investment in its wholly owned unit, South Street Securities, LLC (“SSS”).
SSSF is controlled by ultimate parent company South Street Securities Holdings Inc. (“SSSH”). In early 2024, SSSH acquired GX2 Systems, LLC (and its subsidiary, GX2 Spread Markets, LLC). GX2 is an algorithmic trading platform that specializes in the development and implementation of UST securities liquidity trading and related analytical solutions. The spreads market portion of the business was merged with SSS in 2Q25.
SSS specializes in collateralized finance with business activities consisting of traditional fixed income repo, residential interest rate risk management activities (TBA finance), and proprietary investment and trading activity, generally on a secured basis with collateral consisting of UST securities. SSS also engages…
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