Too Big to Fail: The Inside Story of How Wall Street and Washington Fought to Save the Financial System from Crisis — and Themselves

by Andrew Ross Sorkin

The housing problem, he had thought, was limited to the increase in subprime loans to borrowers with poor credit. Although the subprime market had mushroomed to $2 trillion, it was still just a fraction of the overall $14 trillion U.S. mortgage market. But that analysis did not take into account a number of other critical factors, such as the fact that the link between the housing market and the financial system was further complicated by the growing use of exotic derivatives. Securities whose income and value came from a pool of residential mortgages were being amalgamated, sliced up, and reconfigured again, and soon became the underpinnings of new investment products marketed as collateralized debt obligations (CDOs).