Marshall & Ilsley

Marshall & Ilsley Corporation (also known as M&I Bank) was a U.S. bank and diversified financial services corporation headquartered in Milwaukee, Wisconsin, that was purchased by Bank of Montreal in 2010.

The bank was founded in 1847 and by 2008 the bank had assets of $63.5 billion and over 250 branches. After the acquisition, Bank of Montreal combined the Marshall & Ilsley Corporation operations into its existing U.S. subsidiary BMO Harris Bank.

History

Founded in 1847, M&I Marshall & Ilsley Bank was the largest Wisconsin-based bank, with 194 offices throughout the state. In addition, M&I had 45 locations throughout Arizona; 17 offices in Kansas City and nearby communities; 17 offices on Florida’s west coast; 26 offices in metropolitan Minneapolis/St. Paul (Twin Cities), and one in Duluth, Minnesota; one office in Las Vegas, Nevada; 16 offices in the greater St. Louis area; and 32 offices in the greater Indianapolis area.

In December 2006, M&I signed a definitive agreement to acquire United Heritage Bankshares of Florida with 13 locations in the Orlando area.