Investors Financial Services Corp. Announces Webcast of Fourth Quarter

    Business Editors

    BOSTON--(BUSINESS WIRE)--Jan. 11, 2005--Investors Financial Services Corp. (Nasdaq:IFIN) will host an Internet broadcast of its fourth quarter earnings conference call on Tuesday, January 25, 2005 at 5:00 p.m. ET, following the release of the company's quarterly results. The call will be accessible from Investors Financial's home page at http://www.ibtco.com and at (719) 457-2679; confirmation code 294343. Recorded replays of the earnings conference call will be available on the website and by telephone at (719) 457- 0820; confirmation code 294343.

    Investors Financial Services Corp. provides services for a variety of financial asset managers such as mutual fund complexes, investment advisors, banks, and insurance companies. Through our wholly-owned subsidiary, Investors Bank & Trust Company, we provide core services, including global custody, multicurrency accounting, and mutual fund administration, and value added services, including securities lending, foreign exchange, and cash management. Offices are located in the United States, Canada, Cayman Islands, and Ireland. Visit Investors Financial on the web at http://www.ibtco.com.

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CONTACT: Investors Financial Services Corp. John N. Spinney, Jr., 617-937-3500 jspinney@ibtco.com

KEYWORD: MASSACHUSETTS INDUSTRY KEYWORD: BANKING EARNINGS CONFERENCE CALLS SOURCE: Investors Financial Services Corp.

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