Our Solutions

We built and now operate the largest and most advanced mortgage securitization platform in the world, with flexibility, scalability, and security at its core. Featuring layered security architecture, high-speed, low-latency networks, and business continuity with full-disaster recovery within 4 hours, our platform is integral in supporting the financial services industry today.

Our Platform

Leveraging advanced cloud-native and related business process technologies, we created the platform which serves as the resilient “straight-through processing” engine for our securitization business. By managing the issuance and ongoing administration of the Uniform Mortgage-Backed Security (UMBS) and complex multi-class securitization structures, we are an indispensable business partner to Fannie Mae and Freddie Mac.

Our robust, secure, and resilient cloud technology features:

  • security set up and settlement for new single and multi-class deal securities;
  • security calculation and administration including loan and security life cycle events, bond payment calculations, and ongoing disclosures;
  • robust reporting and data analytics to support investor and client needs including, but not limited to, disclosures, tax, and general performance;
  • and is audited to meet SOC-1, SOC-2, NIST 800-53 moderate, and Federal Housing Finance Agency (FHFA) regulatory requirements.
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How It Works

To meet the challenges of the market, such as data management, processing, and speed of execution, we’ve built a cloud-based platform that bridges the gap between the secondary mortgage market and investors. With security and traceability capabilities, CSS allows for the necessary regulatory oversight.

We transformed housing finance by enabling the Uniform Mortgage-Backed Security for Fannie Mae and Freddie Mac. Since mid-2019, we have supported the mortgage-backed security needs of Fannie Mae and Freddie Mac.

Each month, we support the issuance of more than $400 billion in mortgage securities, generating consistent and necessary liquidity for the U.S. housing market. CSS manages 70% of U.S. mortgage securities, 49% of all asset-backed securities in the U.S., and 40% of global securitization.

Our Impact

Today CSS services over 1 million securities backed by 30 million residential mortgage loans for over $6 trillion in unpaid principal balance.
active loans currently on the platform
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of principal loan balance managed on the platform
$ 0 trillion
in mortgage securities issued each month
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Speed of Processing

Built from the ground up to account for the volume, scale, and operational needs of our customers, we offer highly redundant, high-speed, low-latency networks. Matching this with nimble business teams that support the operations and maintenance of the platform allows us to rapidly adapt our capabilities to respond to changes in the market.


Cloud Environment

Our cloud-native approach allows us to truly be client centric by providing a positive experience in time to market scalable, reusable solutions, and a simplified operational risk environment.


Safety and Soundness

Committed to transparency, safety, and soundness, CSS maximizes the security of the entire U.S. housing finance system through our commitment to protocol and practice. Audited to meet SOC-1, SOC-2, NIST 800-53 moderate, and Federal Housing Finance Agency (FHFA) regulatory requirements.