Securitization is often discussed as a complex capital markets product, but at its core it answers a simple funding question: how can loans sitting on lender balance sheets be converted into investable securities for long-term investors?
Banks, finance companies and other lenders originate assets such as mortgages, auto loans, credit card receivables, leases and consumer loans. Through securitization, these assets can be pooled, structured and sold to investors as bonds. The lender receives funding and balance-sheet capacity. Investors receive exposure to diversified cash flows. The economy benefits when credit can move from originators to capital markets in a disciplined and transparent way.
A useful way to understand market depth is to compare securitization outstanding with GDP. This is not a perfect measure, because each market defines securitization differently and some products, such as covered bonds, sit close to securitization but are not technically the same. Still, the ratio gives a practical indication of how deeply securitization is embedded in a financial system.
The United States is the deepest securitization market among the three. Its agency mortgage-backed securities market alone is enormous. In 2025, agency MBS outstanding was reported at about US$9.08 trillion. In addition, US asset-backed securities outstanding were about US$1.61 trillion as of the end of 2024. Against a US economy of roughly US$29 trillion, this means securitized assets are a very large share of GDP. Depending on which asset classes are included, the US securitization market sits at roughly one-third or more of GDP.
This reflects the structure of the US financial system. Securitization is not an occasional funding tool there. It is central to housing finance, consumer credit, auto lending, student loans, commercial mortgages and corporate credit through CLOs. The US also has a broad investor base: banks, mutual funds, pension funds, insurers, hedge funds, foreign investors and public-sector buyers. This creates scale, liquidity and regular issuance.
Canada is smaller but still meaningful. CMHC reported total NHA MBS outstanding of about C$567.7 billion as of June 2025. Canada also has a large covered bond market, with 2025 reporting showing about C$282 billion outstanding under the covered bond framework. When these are compared with Canada’s GDP, the combined mortgage funding market is significant. However, Canada’s private securitization market is much narrower than the US market.
The key point is that Canada’s securitization depth is concentrated in government-supported mortgage funding. NHA MBS and Canada Mortgage Bonds provide stable funding and strong investor confidence. But private-label RMBS, broader consumer ABS and specialty securitization markets are not as deep as in the US. So, Canada has a strong mortgage securitization framework, but not the same breadth of structured finance markets.
Europe presents a different picture. Its economy is large, but securitization remains underdeveloped relative to GDP. A 2025 Financial Times analysis noted that Europe had about €440 billion of true-sale securitization outstanding, compared with about €2.8 trillion in the US. Europe also has a much larger covered bond market, estimated around €2.4 trillion, but covered bonds are not the same as securitization. They remain on bank balance sheets and provide investors with dual recourse to the issuer and the cover pool.
This distinction matters. True-sale securitization transfers assets into a separate vehicle and can free bank balance sheets more directly. Covered bonds provide stable funding, but they do not provide the same degree of risk transfer. This is one reason European policymakers and market participants have been debating securitization reform. Europe has large funding needs for infrastructure, energy transition, defense, digital investment and business growth, but much of its credit system remains bank-led.
When comparing the three markets, the conclusion is clear: the US is the deepest securitization market, Canada is strong but concentrated, and Europe is large in economic size but underdeveloped in true-sale securitization.
The difference is not only about regulation. It is also about market culture. The US has built a capital markets system where loans regularly move from originators to investors. Canada relies more heavily on bank balance sheets and public mortgage funding structures. Europe relies significantly on banks and covered bonds, while securitization has not yet become a fully scaled funding bridge.
For investors, this comparison offers an important learning. A high securitization-to-GDP ratio usually signals deeper capital markets, wider investor participation and more funding options. But it can also bring complexity. The US market offers scale and liquidity, but investors must understand structures, prepayment risk, leverage and credit cycles. Canada offers stability and high-quality mortgage-backed funding, but less product diversity. Europe offers potential, but its securitization market still needs regulatory clarity, investor participation and stronger secondary-market depth.
Securitization works best when it is supported by clean collateral, transparent reporting, reliable servicing, strong legal structure and an informed investor base. Market depth does not come only from large numbers. It comes from trust.
That is the core message: securitization is not just a product. It is a funding bridge between lenders and long-term capital. The US has built that bridge at scale. Canada has built it strongly around mortgage funding. Europe is still trying to build a deeper version of it.
The opportunity globally is not to push securitisation blindly. The opportunity is to build securitisation markets that are transparent, investor-friendly and connected to real economic funding needs.
References:
Ginnie Mae Global Market Analysis, May 2025; SEC ABS Market Paper, April 2025; CMHC Securitization Business Supplement Q2 2025; Financial Times, “How to fix Europe’s securitisation market,” February 2025; McCarthy Tétrault Structured Finance Canada 2025 Year in Review; World Bank GDP data.