EXHIBIT 99.1 Risk Exposures ($ in millions) November 30, 2007 November 9, 2007 August 31, 2007 ------------------- ------------------- ------------------- AAA - Super Senior Exposure High-Grade Collateral 167 169 166 Mezz Collateral 597 704 778 CDO((2)) Collateral 1 1 19 - --------------------------------------------------- ------------------- ------------------- ------------------- Subtotal: AAA - Super Senior Exposure 765 874 963 - --------------------------------------------------- ------------------- ------------------- ------------------- Below-AAA Exposure (10) 10 165 - --------------------------------------------------- ------------------- ------------------- ------------------- Total: ABS CDO Exposure 755 884 1,128 =================================================== =================== =================== =================== CDO Warehouse - - 944 - --------------------------------------------------------------------------------------------------------------- Total: ABS CDO-Related Exposures 755 884 2,072 =============================================================================================================== US Subprime Mortgage Exposure Subprime Whole Loans 496 530 1,272 IG Subprime Securities 1,062 1,236 1,245 Non-IG Subprime Securities 211 73 313 ABS CDS (2,351) (1,891) (1,711) - --------------------------------------------------------------------------------------------------------------- Total: US Subprime Mortgage Exposure (582) (52) 1,119 ===============================================================================================================