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Analyzing CDO Waterfalls and Their Bespoke Deal Terms

Article Quant Q&A · Author: Mihaita Gheorghiu
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Summary

The document explains that collateralized debt obligations varied in complexity, but their payment structures can be analyzed by reading the governing deal documents. These contracts define cash-flow waterfalls tied to ratings triggers, collateral levels, and defaults. An analyst can translate those provisions into scenarios and examine how cash flows move through the structure under different conditions.

The answer also emphasizes that CDOs were often bespoke, even when deals shared recognizable features. Investors could miss important details when they relied on broad similarities, especially because deal structures could be shaped by parties holding the riskiest tranche. The account offers a conceptual description rather than a worked model or evidence from a specific transaction. It does not explain how Michael Burry obtained particular deal information, nor does it establish that the documents or relevant data were equally accessible to every investor.

Key ideas

  • A CDO contract defines a cash-flow waterfall governed by deal terms and credit events.
  • Scenario analysis can trace how defaults and other triggers affect payments across tranches.
  • CDO structures were bespoke, so similar deals could still differ in consequential details.
  • The answer provides a general analytical approach but no transaction-level example or data source.

Tags

Fixed incomeDerivatives pricingRisk management
Full text
# CDOs before the 2007 crisis


# CDOs before the 2007 crisis












I read that before the financial crisis of 2007 the CDOs were so complex that investors could not analyze them. Were they just complex, or was there no public information about what they contained?

Also, in The Big Short movie, Michael Burry analyzes those CDOs before deciding to short them. Where could he get such information?

## Answer by Edward Watson (score 2)

https://quant.stackexchange.com/a/47210

They ranged from somewhat complex to highly complex. Ultimately though, a CDO like any bond contract, is just a legal document outlining a waterfall of cash flows based on ratings triggers, collateralization levels, defaults etc. So as long as you read the document carefully it's more legal than financial to run a series of cash flow scenarios (in whatever complex or simple way you choose to generate them) through the structure. But they were all bespoke, yet often similar enough, that i think many people didn't pay enough attention to the minutiae. Also, typically a CDO was initiated by a hedge fund, un or similar who would own the riskier tranches like the equity, with the more secure tranches going to Asset Managers/Pensions and Insurance companies. So you're now dealing with a complex highly nuanced waterfall structured by the owner of the riskiest tranche.

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.