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Calamos Announces Redemption Dates of Auction Rate Preferred Securities for Calamos Global Dynamic Income Fund

NAPERVILLE, Ill., May 6, 2008-- Calamos Investments today announced the auction rate preferred securities redemption dates for the Calamos Global Dynamic Income Fund (NYSE: CHW). As announced last week, Calamos has secured an alternative form of borrowing that will enable, based on current market conditions, CHW to redeem approximately 85.7% or $300 million of its outstanding ARPs.

    The redemption amounts and dates are as follows:



    CHW                   Shares       Redemption Redemption    Redemption
    Auction Series      Outstanding      Percent    Amount         Date
    Monday                2,800          85.7 %   $60,000,000  May 19, 2008
    Tuesday               2,800          85.7 %   $60,000,000  May 20, 2008
    Wednesday             2,800          85.7 %   $60,000,000  May 21, 2008
    Thursday              2,800          85.7 %   $60,000,000  May 22, 2008
    Friday                2,800          85.7 %   $60,000,000  May 23, 2008

Additional information regarding the redemptions will be discussed on a conference call to be held today at 12:00 pm ET/11:00 am CT. The conference call is accessible by dialing one of the following numbers:

Participant Dial-in:
*US/Canada Dial-in #: 800.379.3942
*Int'l/Local Dial-in #: 706.679.7206
Conference ID #: 46468685

You may also listen online: http://audioevent.mshow.com/344398/

Following the call, a replay will be available beginning at 3:00 pm ET/2:00 pm CT. To access the telephone replay, call the number listed below and provide the conference ID number:

Replay info: Encore Dial-in #: (800) 642-1687 or (706) 645-9291
Encore Dates: 05/06/2008 - 05/16/2008 (end of day)
Conference ID #: 46468685

About Calamos

Calamos Investments is a diversified investment firm offering equity, fixed-income, convertible and alternative investment strategies, among others. The firm serves institutions and individuals via separately managed accounts and a family of open-end and closed-end funds, providing a risk-managed approach to capital appreciation and income-producing strategies. For more information, visit: http://www.calamos.com/closedendfunds/default.aspx.

From time to time, information or statements provided by us, including those within this news release, may contain certain forward-looking statements relating to future events, future transactions, future financial performance, future potential costs, expectations, the competitive and regulatory environment and future market conditions. Forward-looking statements are based on information available at the time those statements are made and/or management's good faith belief as of that time with respect to future events, and are subject to risks and uncertainties that could cause actual performance or results to differ materially from those expressed in or suggested by the forward-looking statements. Such risks and uncertainties include, but are not limited to: catastrophic or unpredictable events, changing costs of leverage, strategy implementation obstacles, fluctuations in the financial markets and the competitive conditions in the fund, asset management and broader financial services sectors and other risks inherent in the financial and trading markets, including liquidity issues.

SOURCE: Calamos Investments

CONTACT: Ken Fincher, Vice President of Calamos Advisors LLC,
+1-630-245-1076, kfincher@calamos.com
Web site: http://www.calamos.com


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