Goldman, Citigroup CDOs Were Tip of Iceberg

Bloomberg wrote a couple of weeks ago, Goldman, Citigroup CDOs Were Tip of Iceberg "The complex mortgage instruments at the center of the 2008 financial crisis went so spectacularly wrong that many observers have said they were designed to fail. A new paper by Oliver Faltin-Traeger of the investment firm Blackrock and Christopher Mayer of Columbia Business School lends a lot of credence to that assertion."

"Using a unique database published by the investment firm Pershing Square Capital Management, Faltin-Traeger and Mayer identified the underlying bonds in some 528 ABS CDOs issued between 2005 and 2007, and compared their performance to similar bonds that weren't included in CDOs. They found that the bonds in the CDOs performed a lot worse. Even if one holds observable characteristics such as initial ratings and yields constant, the bonds in the CDOs suffered ratings downgrades that were 50 percent to 90 percent more severe. As of June 2010, for example, bonds with initial triple-A ratings had been downgraded by an average 11.84 notches, compared to 5.99 for those not in CDOs. The bonds in the CDOs were also more likely to have been rated by all three major credit-rating firms. The research provides strong support for the idea that banks -- with the help of pliant ratings agencies -- put together the CDOs and sold them to investors in a premeditated effort to get rid of some of their most toxic assets, or to provide vehicles for clients who wanted to bet against the worst possible assets. As the authors put it: "It would have been very hard to randomly choose securities with such poor ex-post performance.""