DBRS Publishes Credit Rating Report on Marshall & Ilsley Corporation and Related Entities

Dominion Bond Rating Service (“DBRS”) has today issued a credit rating report on Marshall & Ilsley Corporation (the “Company”). The report discusses the rationale behind DBRS’s ratings of the Company. DBRS is releasing this report subsequent to a detailed review of the Company.

DBRS assigned the A (high) Issuer & Senior Debt rating, the “A” Subordinated Debt rating, and the R-1 (middle) Short-Term Instruments rating for the Company. In addition, DBRS assigned the AA (low) Deposit & Senior Debt rating and the R-1 (middle) Short-Term Instruments rating for M&I Marshall & Ilsley Bank, M & I Bank FSB, and Southwest Bank of St. Louis. All trends are Stable.