Introductory Risks and Access Considerations for ABS and MBS
Summary
The document introduces asset-backed securities (ABS) and mortgage-backed securities (MBS), including structures such as collateralized mortgage obligations and collateralized loan obligations. It frames these products as difficult for retail investors because their risks can span credit spreads, prepayments, interest rates, volatility, liquidity, and the securitization process itself. It observes that early decentralized-finance applications have tended toward simpler structures, such as short-duration mortgages.
For a broad starting point, an answer recommends an institutional guide to mortgage-backed and asset-backed securities, while cautioning that its publication date makes some material dated. The discussion offers orientation rather than a pricing or trading method: it does not explain how to model defaults, prepayments, tranche cash flows, or hedges. Its comments about retail suitability and DeFi are general and based on the respondent’s perspective, so readers would need current market and product-specific information before drawing practical conclusions.
Key ideas
- ABS and MBS can expose investors to credit, prepayment, interest-rate, volatility, and liquidity risks.
- Securitization itself adds risks beyond those of the underlying assets.
- The document characterizes these securities as complex and generally challenging for retail investors.
- Early DeFi securitization examples are described as focusing on relatively simple, short-duration mortgages.
- The recommended introductory resource is acknowledged to be dated and the discussion does not teach a pricing model.
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Full text
# How to get started with ABS? # How to get started with ABS? I am reading about ABS avoiding esoteric instruments with complex structures and I want to learn about pricing methods and trading of these instruments thinking about futures applications for decentralized finance (DeFi), do you think these instruments can be a good alternative for retail investor or is it something useful only for the big players? I want to focus efforts on debt backend assets like CMO and CLO, something introductory on these topics, I really apreciate any source or guidance you can give me. Some sources that I reviewed were: - Pricing and hedging collateralized loan obligations with implied factor models: https://www.researchgate.net/publication/265117839_Pricing_and_hedging_collateralized_loan_obligations_with_implied_factor_models This is a bit dense, maybe it's not the best first approach to the concepts, but I get some concepts like Default, Prepayment, but I'm still not really advanced in mathematical concepts ## Answer by Sharad (score 3, accepted) https://quant.stackexchange.com/a/71227 To answer your questions in order: - MBS and ABS are usually not considered retail-friendly products because of the complexity of their risk factor exposures (spread, prepayment, credit, interest-rates, volatility, liquidity etc) along with risks associated with the securitization process in and of itself. The initial excursions into DeFi on this front have (to my knowledge) unsurprisingly focused on relatively vanilla structures such as short-duration mortgages. See: DeFi Securitized Mortgage Fund. - The best overall introduction to MBS and ABS in my opinion remains "The Salomon Smith Barney Guide to Mortgage-Backed and Asset-Backed Securities", although it is starting to show its age (it was written in 2001). Still, reading/browsing through it will give you a solid introduction to the current institutional landscape of MBS and ABS.
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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.