Marshall & Ilsley Corporation to Release Third Quarter Earnings on Friday, October 14

MILWAUKEE, Sept. 26  /PRNewswire-FirstCall/ -- Marshall & Ilsley Corporation today announced it will release its third quarter 2005 earnings on Friday, Oct. 14, 2005, at 8 a.m. (Central Daylight Time). A conference call will be held at 11 a.m. (CDT). Individuals interested in listening should call 1-800-437-3848 and ask for M&I's quarterly earnings release conference call. After the call is over, a replay of the call will be available through 5 p.m. Oct. 21, by calling 1-800-839-6713 and entering pass code 737 98 41.

The text of the third quarter earnings press release can be found at ( http://www.micorp.com/ ), Investor Relations, News. Supplemental financial information referenced in the conference call can be found at ( http://www.micorp.com/ ), Investor Relations, Presentations, Third Quarter Presentation, after 8 a.m. Oct. 14.

Marshall & Ilsley Corporation (NYSE:MI) is a diversified financial services corporation headquartered in Milwaukee, Wis., with $43.5 billion in assets. Founded in 1847, M&I Marshall & Ilsley Bank has the largest banking presence in Wisconsin with 198 offices throughout the state. In addition, M&I has 36 locations throughout Arizona; 13 offices in metropolitan Minneapolis/St. Paul, Minn.; and, locations in Duluth, Minn.; Las Vegas, Nev.; and, Naples and Bonita Springs, Fla. M&I's Southwest Bank affiliate has seven offices in the St. Louis area and one office in Belleville, Ill. Metavante Corporation, Marshall & Ilsley Corporation's wholly owned technology subsidiary, provides virtually all of the technology an organization needs to offer financial services. M&I also provides trust and investment management, equipment leasing, mortgage banking, asset-based lending, financial planning, investments, and insurance services from offices throughout the country and on the Internet ( http://www.mibank.com/ or http://www.micorp.com/ ). M&I's customer-based approach, internal growth, and strategic acquisitions have made M&I a nationally recognized leader in the financial services industry. 

DATASOURCE: Marshall & Ilsley Corporation



CONTACT:  John Presley, senior vice president and chief financial

officer, [phone], or Don Wilson, senior vice president, corporate

treasurer, [phone], both of Marshall & Ilsley Corporation



Web site:  http://www.micorp.com/

http://www.mibank.com/ 

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