Complex Systems with Patrick McKenzie (patio11) Complex Systems with Patrick McKenzie (patio11)

The factory behind your home loan

Jun 18, 2026 · 26m

Summary

Patrick McKenzie reads his essay "Mortgages are a Manufactured Product," arguing that mortgages function like industrial widgets rather than simple bank loans. He explains how originators, government-sponsored entities, and servicers disaggregate risks like default and servicing. The episode highlights how this complex supply chain insulates banks from interest rate volatility, referencing the 2023 SVB collapse as a case study. McKenzie concludes by emphasizing the deep, often invisible specialization underlying everyday financial systems.

Topics discussed

Introduction and episode context Mortgages as a manufactured product Who manufactures mortgages: Originators and roles Who buys mortgages: GSEs and risk socialization Sponsor reads: Mercury and Granola GSE privatization and Mortgage Servicing Rights Private capital, interest rates, and bank risks 2023 Banking Crisis: SVB and First Republic Recommended reading and flow meter analogy Conclusion and sign-off
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