ThisForm6-Kisherebyincorporatedbyreferenceinto(1)theregistrationstatementsonFormF-3
(Registration Numbers333-283672 and333-293403), andinto eachprospectus outstandingunder the
foregoing registrationstatements, (2)any outstandingofferingcircular orsimilar documentissued or
authorized by UBS AG that incorporates by reference any Forms 6-K of UBS AG that are incorporated
into itsregistration statementsfiled withthe SEC,and (3)the baseprospectus ofCorporate AssetBacked
Corporation(“CABCO”)datedJune23,2004(RegistrationNumber333-111572),theForm8-Kof
CABCO filed and dated June23, 2004 (SEC File Number001-13444), and the Prospectus Supplements
relatingtotheCABCOSeries2004-101TrustdatedMay10,2004andMay17,2004(Registration
Number 033-91744 and 033-91744-05).