Economic Crisis – Mortgage Backed Securities
Monday, October 27th, 2008In my previous post on the current financial crisis, I reviewed the players involved in the crisis. I also covered how an overheated real estate market and lax lending standards were the tinder that helped fuel the financial crisis we’re now smack in the middle of.
In this post I’ll talk a little bit about what happened to all of those mortgages once a borrower closed on a house/apartment/condo and how they added to the fire.
Historically, banks originated loans and held them on their balance sheet as assets. They made money by lending at a higher rate than they paid on customers’ deposits. Since the banks were holding the loan on the balance sheet (i.e. they were hurt if the loan went into default or otherwise underperformed) they were generally very selective in the loans they made. This began to change when many of these banks and other lending institutions began to sell the mortgage loans they originated to financial institutions who would package them into mortgage backed securities (MBS) a type of asset-backed security.
These structured securities allowed the originating bank to book a profit on the loan quicker and also freed their balance sheet and enabled them to make more loans. Since the originating bank was no longer at risk if the loan went bad many began to relax their lending standards. In order for banks to sell their loans, the loans just had to meet the minimum standards of the Federal Housing Administration (FHA) — an entity whose stated goal was to boost the rate of homeownership in the United States.
Financial institutions then created the MBS and sold them to institutional investors who desired a “stable” asset that produced a regular level of income. The idea behind mortgage backed securities was that if you pooled a large enough number of mortgages you were actually decreasing your overall risk by diversifying through large numbers of individual loans and over various geographic areas. In other words, one bad loan wouldn’t ruin your day.
In addition, mortgage backed securities were divided into “tranches” based on risk level and interest rate, allowing buyers to make purchases based on level of risk they were willing to accept. The process for rating these tranches was similar to other fixed income securities. Rating agencies like Standard & Poor’s and Moody’s would give the tranches with the least risk investment grade ratings (think GE and Berkshire Hathaway debt), while slapping lower ratings on riskier tranches. So in many cases, a pile of high risk sub-prime loans were magically turned into supposedly high-quality, investment grade fixed income securities.
After securitizing and selling the loans, these financial institutions were able to buy more loans and repeat the process over and over again. As the real estate market continued to boom, all parties involved got hungrier and hungrier for more and more loans. Everyone involved was happy until the real estate bubble started to deflate. As defaults began to rise, the buyers of the MBS’s started to see losses that they weren’t expecting to see from such a supposedly high grade security. Buyers quickly stopped buying the MBS’s, sticking the financial institutions with a bunch of unsalable mortgages. That caused the financial institutions to stop buying new loans, which in turn meant that the originators had to hold them on their balance sheets and quickly curtail their new lending. In the end, this meant that a new home buyer suddenly had a lot more trouble finding a loan, which helped slow the pace of home buying. With new buyers kept at bay, home prices started to fall and those who had overextended themselves to buy a property found themselves without clear path to safety. It’s not too hard to see how this situation can feed on itself and create a downward spiral.
So now we have between $1 and $1.5 trillion dollars in sub-prime mortgages that no one wants and a large number of buyers who can’t keep up with the payment on loans they shouldn’t have taken out. The result? A frozen market. Individual and corporate balance sheets are now full of loans they don’t want, which restricts their ability to spend or lend additional money. And the spiral continues…
As always, please feel free to add to the commentary and ask any questions you might have.
Scott H
