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Financial Crisis 101: CDOs explained

Marketplace Senior Editor Paddy Hirsch explains collateralized debt obligations.

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Kai Ryssdal: The thing about this credit crisis is that it reaches out and touches you, sometimes without you even knowing. For instance, I don't think many of you ever went out and actually bought yourself a collateralized debt obligation. But chances are your bank did. And your retirement money's probably tied up in 'em through mutual funds. Yet here we are a year and a half into this crisis, and it seems people don't understand what CDOs are. Much less how they work. So for today's explainer, we turn to one of Marketplace's most brilliant economic minds.


Rico Gagliano: Ha ha, Kai, very funny. I'm reporter Rico Gagliano and like most Americans, as of a week ago, I'd never even heard of these . . . [sign] what are they called again?

Paddy Hirsch: ollateralized debt obligations, or CDO's.

Gagliano: That's Marketplace Senior Editor Paddy Hirsch. Now he knows CDOs. He's been reporting on 'em for years. In fact, to prepare me for this story, he gave me a simple, elegant lesson explaining the things. So to save myself some effort (and before he has a chance to copyright it), I present, in audio form, Paddy's ...

Announcer voice: CDO Champagne Metaphor

Gagliano: OK, so a CDO is an investment that works kind of like a champagne bottle. An investment bank creates the bottle and fills it up. With what? Mike Hatley manages CDOs at Westgate Horizons Advisors.

Mike Hatley: High yield bonds can be the collateral in there. You could have aircraft loans, credit card loans, lots of different things, as long as they pay interest on some sort of monthly or quarterly basis.

Gagliano: The interest goes to the CDO's investors; it's how they make money. Now during the housing boom, the banks got a great idea. They'd create lots of CDO's, and fill them with . . .?

Hatley: Uh, those were based on the subprime mortgage-backed securities.

Gagliano: [scary movie music] That's right: investors were betting big on the modern equivalent of a witch's curse: subprime mortgages. So you know this isn't gonna end happily. At the time, though, it was awesome. Almost all homeowners made payments on their subprimes, with interest. And you can think of that interest money as the foam in the CDO champagne bottle. [sound of a cork popping] The foam popped out the top [sound of cheers] And flowed to happy, happy investors. Now, explaining how the investors divvied up that cash requires yet another metaphor. Ladies and gentleman, Paddy Hirsch.

Hirsch: When that foam comes out of the bottle, imagine a pyramid of glasses there. The champagne flows out of the top, [pouring sound] fills the first glass, then the next two glasses, then the next three glasses . . .

Gagliano: The glasses are the CDO investors. Those at the top of the pyramid get filled with interest foam first. Actually that sentence sounds kinda disgusting, so I'm gonna rephrase it: they get paid first. Lower-tier investors get paid, only if there's enough interest to trickle down that far. In return for their risk, those investors get bigger returns. And during the housing boom, CDO investors got nice and drunk off subprimes. Interest flowed all the way to the bottom of the investor pyramid. Then the bust happened. Subprime loans started defaulting. So there's less and less interest bubbling out of the CDO champagne bottles.

Hirsch: Which means that only maybe the top two or three layers are gonna get filled, and that bottom layer of glasses, well, they're fresh out of luck; no champagne for them.

Gagliano: That'd be bad enough. But it gets worse. See, during the boom, that bottom layer of glasses was full? And the owners recycled the champagne. they poured it into new bottles, which were supposed to fill whole new pyramids of glasses. These secondary CDO's were now full of risky securities, based on the riskiest kind of mortgage. It wasn't champagne -- more like Mad Dog 20/20. But investors didn't know it, because ratings agencies didn't label this stuff as risky. Now, says Westgate's Mike Hatley, there's hell to pay.

Gagliano: How much money is tied up in these secondary CDO's?

Hatley: Hundreds of billions of dollars. I've seen some predictions that the ones that were done based on subprime mortgages in the year 2006 and 2007 will default. Every single one. Even the ones that were originally rated Triple-A.

Gagliano So investors are out tons of money. They no longer trust Collateralized DDbt Obligations, even ones that aren't filled with mortgage debt. They don't trust rating agencies. And we could all . . . [sound of cork popping] use a drink.

In Los Angeles, I'm Rico Gagliano for Marketplace.

About the author

Rico Gagliano co-hosts and co-produces Marketplace’s “Small Talk” segment.

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gee jacks's picture
gee jacks - Jul 24, 2011

Complicity. opining now puts me on the "late show". there were individuals, seemingly everyone in the US, was complicit in their personal demise and in part the fall of the economy. There is a dream. There is greed. There is a goal. The dream for most is home ownership. Greed tapped into the darkside of human nature. Lots of working clas americans saw an opportunity to and took it. Some one making 50k or less buying a 250k home or 2 because the bank states "you can offord it?" A new BMW or Mercedes? In that housing market, that credit boom, surely depicted that most among us would have been complicit in the devising this scam. This would have happen no matter who would have been in leadership. This reminds me of the Milgram Experiment. Only with this financial experiment, no one knows how many people are zapping us. In fact, we may be zapping ourselves. Most of us, if given the opportunity would have devise the same plan. Here's the carrot. If given a chance, The goal is to get rich!

James Kelso's picture
James Kelso - Feb 26, 2011

Great posts, I'm reading a book, THE BIG SHORT BY MICHAEL LEWIS, you all need to read it, be glad you did, and will wonder why people on wall street are not in jail

Maureen Turner's picture
Maureen Turner - Nov 16, 2010

I just finished reading "The Big Short" by Michael Lewis. My conclusion is we are on the hook for the secondary CDO's since the government bailed out Wall Street...

Josh Mcticked's picture
Josh Mcticked - Apr 28, 2010

Crooks, crooks, crooks and more crooks. When will it end? The rich and powerful keep doing it and doing it. And yet there are still idiots out there that think the mortgage crisis is the fault of the home owners. This country sucks !!!

Robert James's picture
Robert James - Apr 20, 2010

I only recently found your explanation. The only part you left out was that the CDO purchases were leveraged as much as 30:1, multiplying the effect commensurately.

hank wheeler's picture
hank wheeler - Mar 6, 2010

Don't ask don't tell...I guess that's Congress' stance towards the greedy bastards that created this crisis...the repeal of Glass-Steagall made all the worst scum like Goldman sax rise to the top of the cesspool

Chris Stacher's picture
Chris Stacher - Apr 22, 2009

If you are interested in explanation of financial crisis go to It's a pyramid, stupid - blog - by greg pytel http://gregpytel.blogspot.com/

"The greatest shortcoming of the human race is our inability to understand the exponential function."

Professor Albert Bartlett

Mike Taylor's picture
Mike Taylor - Mar 22, 2009

It goes without saying the real villains in this mess are those who repealed laws put in place in the depression to stop these kinds of things before the economy became unsound. So, you can't blame Wall Street for being greedy and taking advantage. It is what business is designed to do after all. But you can and should blame the politicians who allowed a de-regulated Wall Street and Banks to take advantage again and bring about what is likely to be another great depression!

Mike Razar's picture
Mike Razar - Feb 19, 2009

I have no quibble with the explanation. It is accurate. What really gets me is how the purveyors of these instruments manage to convince people that these instruments are either hard to understand or value. You need a spoonfull of probability theory, a pinch of statistical reasoning and maybe some freshman calculus.

Raymond Chiu's picture
Raymond Chiu - Feb 19, 2009

Brilliant explanation.

If this is the root cause of the economic crisis, I would like to understand not only the path forward, but how we, as a society, will not repeat. Do we outlaw secondary CDOs?

I have tried to stay away from derivatives all my life, but it seems that they are difficult to avoid.

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