Marshall & Ilsley Corporation Announces Fourth Quarter 2004 Dividend

Marshall & Ilsley Corporation Announces Fourth Quarter 2004
Dividend 


MILWAUKEE, Oct. 21  /PRNewswire-FirstCall/ -- Marshall & Ilsley Corporation
(M&I) today announced its Board of Directors has declared a regular quarterly
cash dividend of $.21 per share on its common stock.  The dividend is payable
on December 10, 2004, to shareholders of record at the close of business on
November 30, 2004.

Marshall & Ilsley Corporation (NYSE:MI) is a diversified financial services
corporation headquartered in Milwaukee, Wis., with $39.0 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 and Bonita
Springs, 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, 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:  Mark Furlong, president, M&I Marshall & Ilsley Bank,

[phone], or Don Wilson, senior vice president, corporate treasurer of

Marshall & Ilsley Corporation, [phone]



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

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