Who Holds the Toxic Waste? An Investigation of CMO Holdings

Views stated in Policy Discussion Papers are those of the authors and not necessarily those of the Federal Reserve Bank of Cleveland or of the Board of Governors of the Federal Reserve System. Materials may be reprinted, provided that the source is credited. Please send copies of reprinted materials to the editor. " Toxic waste " refers to the riskiest derivative structures arising from collateralized mortgage obligations (CMOs). We use simulations to predict how this risk would manifest itself in various interest rate environments. We also look for evidence on the total dollar value of these securities, who holds them, and how much they hold. Very limited public information is available, but commercial banks are required to report on their holdings, and we investigate the extent to which the risk is concentrated in that sector.