Collateralised debt obligations (CDOs)

Buying risky debt

Collateralised debt obligations (CDOs) are complex investments that repackage a bundle of individual loans into a product that can be sold. In exchange for interest payments, the buyer of a CDO takes on the risk that the initial loans will not be repaid.

These are the products that triggered the global financial crisis.

What is a collateralised debt obligation (CDO)?

A CDO is a security based on a variety of debts, such as mortgages or bonds, that can range from secure to highly risky. These debts may also include car loans, credit card debt or corporate debt. They are called collateralised because they have some type of asset (collateral) behind them.

When you buy a CDO you are buying the right to receive interest payments from a mix of loans and other debts. CDOs differ from other fixed interest investments in that you are buying a bundle of different debts with mixed creditworthiness.

Risks of investing in a CDO

In return for higher interest payments, you bear the risk that some of the loans or bonds in the pool will not be repaid. If this happens, you will lose some or all of your original investment. The riskier bonds and debts may provide higher returns, but there is also a higher risk of losing earnings or capital.


CDOs are complex products. Even big institutions have lost fortunes when trading them. We recommend you do not invest in these products unless you have a written Statement of Advice from an independent, licensed financial planner stating that the product is suitable for you.

One key risk is that you don't have direct information about the individual borrowers behind each loan.

Here are some questions you should consider:

  • How strict is the lending procedure?
  • What is the underlying security really worth?
  • Have the borrower's circumstances changed since the loan was made?
  • Why is the original lender on-selling the loan(s)?

Each CDO is different. The calculations and legal structures can be formidable and the offer documents can make challenging reading. It's best to seek financial advice.

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Last updated: 08 Jun 2018