Marshall & Ilsley Corporation to Release Third Quarter Earnings on Wednesday, October 13

Marshall & Ilsley Corporation to Release Third Quarter Earnings
on Wednesday, October 13 


MILWAUKEE, Oct. 1  /PRNewswire-FirstCall/ -- Marshall & Ilsley Corporation
today announced it will release its third quarter 2004 earnings on Wednesday,
Oct. 13, 2004, at 8 a.m. (CDT). A conference call will be held at 11 a.m.
(CDT). Individuals interested in listening should call 1-800-243-6403 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. 20, by calling
1-800-839-6713 and entering passcode 666 28 25.

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. 13.

Marshall & Ilsley Corporation (NYSE:MI) is a diversified financial services
corporation headquartered in Milwaukee, Wis., with $37.1 billion in assets.
Founded in 1847, M&I Marshall & Ilsley Bank has the largest banking presence in
Wisconsin with 197 offices throughout the state. In addition, M&I has 32
locations throughout Arizona; 11 offices in metropolitan Minneapolis/St. Paul,
Minn.; and, locations in Duluth, Minn.; Las Vegas, Nev.; and Naples, Fla. M&I's
Southwest Bank affiliate has six offices in the St. Louis area, and one office
in Belleville, Ill. Metavante Corporation, Marshall & Ilsley Corporation's
wholly owned technology subsidiary, is a leading financial services enabler --
providing 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:  Mark Furlong, executive 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.mibank.com/

http://www.micorp.com/ 

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