I will explain what a synthetic CDO is, but it will take a lot of text. You can skip this post if you don't want to know.
First, I have to explain what an MBS is, then what a CDO is, then what a synthetic CDO is so you can appreciate the beauty of the con that was pulled off by the fraudsters.
If you are a bank, you have a finite amount of cash. If you loan that cash to someone, you have to wait for that loan to be paid back before you can lend it again.
Note: Let's not go off on a diversion into fractional reserve banking, mm-kay? That's for another day.
Under this system, you aren't going to want to make a 30 year loan because you don't want to have to wait 30 years to make another loan. So your loans are going to be short term. And that's the way things were for a long time.
But what if you could make the loan, and then sell the paper for that loan to someone else for a small profit? This way, you get your cash back, plus a small profit, and can make another loan right away. Then you can sell that loan, too, and then rinse and repeat as long as you can find investors to buy the paper for the loans you make.
That would be awesome, right?
Well, that is the way it worked from about the 1930s until about the year 2000.
Loans get bought and bundled into Mortgage Backed Securities. The monthly payments from each borrower makes a revenue stream. That revenue stream gets divided among all the investors who bought into the MBS pool.
If any borrowers default, every MBS investor loses money equally.
Note: Let's not go off on how MBS revenues can be sliced and diced. We are sticking to generalities for brevity.
The nice thing about an MBS is that the investors are looking for a long term income. This facilitates the creation of 30 year mortgages. An MBS investor gets a nice steady income of principal and interest payments for 30 years as they live their golden years in Florida.
Not really. The average home loan lasts about 8 years before the borrower refinances. Then the principal is paid off all at once. But you get the idea.
Okay. So that's how things worked until fancier derivatives were invented.
Now, if you are that original banker, and you were lending money to a borrower, you were going to do some serious due diligence on that borrower because that was your money you are lending. You are going to want to see some pay stubs, a semen sample, and get a lien on their first born, right?
In the MBS system, you are relieved of a lot of risk. The investors who buy your loans are taking on most of the risk now. But if you make too many bad loans, there goes your business. They won't buy from you any more.
Then along comes the Collateralized Debt Obligation.
I should pause here to mention that home loans are not the only revenue stream. Auto loans, home equity lines of credit (HELOC), student loans, signature loans, credit card debt, and so forth. All of these are revenue streams. The principal payments and the interest payments that come in each period.
All of these forms of revenue can be bundled.
Continued in next post.