South Street Securities Holdings, including South Street Securities, Matrix Applications and AmeriVet Securities, honored fallen 9/11 first responders in NYC by participating in the 24th Annual Tunnel to Towers Foundation 5K Walk and Run on Sunday, September 28, 2025. Teamed up with David Harris Collection, our Tunnels to Towers Team joined over 30,000 participants, raising over $1,400 and honoring the heroes on September 11, 2001.
The Tunnel to Towers Foundation 5K Walk and Run notably honors fallen FDNY hero Stephan Siller for his race through the Brooklyn-Battery Tunnel to the World Trade Center towers on the day of the attacks. Participants trace his steps as an ode to the lives lost on the day of the attacks.
Since the 9/11 attacks, Tunnels to Towers has been helping America’s first respondents and veterans by providing mortgage-free homes to Gold Star and fallen first responder families, in addition to building specially-adapted smart homes for catastrophically injured veterans and first responders. They are also committed to eradicating veteran homelessness and helping America to Never Forget September 11, 2001.
Sidney Covington
VP of Veteran Engagement
South Street Securities Holdings Inc. operates through its wholly owned subsidiaries. Affiliates include South Street Securities LLC, a FINRA and SIPC member who holds a FICC Tier 1 membership and is focused on repo dealer financing US Treasuries, Agency MBS, TBA Mortgage Origination Hedging, Equity Finance and Algorithmic Trade Execution, Matrix Applications LLC, a technology and back-office services company, AmeriVet Securities, Inc., a FINRA and SIPC member who operates an SEC registered Service-Disabled Veteran-Owned broker-dealer, GX2 Systems LLC, a fintech software development company that engineers electronic trading solutions for the fixed income and futures markets.
South Street Securities LLC is a leading independent provider of specialized financing, servicing capital markets institutional asset managers (including traditional and hedge fund managers), real estate investment trusts ("REITs"), tri-party investors, mortgage lenders, midsize and middle market securities broker dealers, and corporate and government issuers. South Street Securities is a FICC Tier 1 member and a member of several major regulatory agencies, including FINRA, SIPC, OCC and NFA. The company operates from its New York headquarters and specializes in the following services: Repo dealer financing US Treasuries, Agency MBS, TBA Mortgage Origination Hedging, Equity Finance and Algorithmic Trade Execution.
Matrix Applications LLC 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. Comprised of a team of capital markets and systems professionals, Matrix Applications delivers financial technology solutions to institutional firms of all sizes. Since 2000, the company has worked hands-on with 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, Matrix Applications provides clients with the right technology at the right price while leveraging extensive technical experience and a deep network to deliver bespoke managed services.
AmeriVet Securities, Inc., is a Service-Disabled Veteran-Owned Small Business broker-dealer that specializes in Capital Markets, Public Finance, Institutional Agency Trading, Loan Sales and Investment Banking. Established in 1994, AmeriVet is dedicated to providing the highest level of service in the industry, while providing meaningful employment opportunities to post 9/11 military veterans.
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