American Capital Agency Will Report Q1 2011 Results on April 25

April 15, 2011

Shareholder Call Scheduled for April 26

BETHESDA, Md., April 15, 2011 /PRNewswire via COMTEX/ -- American Capital Agency Corp. (Nasdaq: AGNC) ("AGNC" or the "Company") announced today it will report first quarter 2011 earnings after market close on April 25, 2011. AGNC invites shareholders, prospective shareholders and analysts to attend the AGNC shareholder call on April 26, 2011 at 11:00 am ET. The call can be accessed through a live webcast, free of charge, at http://www.agnc.com/ or by dialing (877) 569-8701 (U.S. domestic) or (574) 941-7382 (international) . Please provide the operator with the conference ID number 58474355. If you do not plan on asking a question on the call and have access to the internet, please take advantage of the webcast.

A slide presentation will accompany the call and will be available at http://www.agnc.com/. Select the Q1 2011 Earnings Presentation link to download and print the presentation in advance of the shareholder call.

An archived audio of the shareholder call combined with the slide presentation will be made available on our website after the call on April 26. In addition, there will be a phone recording available from 2:00 pm ET April 26 until 11:59 pm ET May 10. If you are interested in hearing the recording of the presentation, please dial (800) 642-1687 (U.S. domestic) or (706) 645-9291 (international). The conference ID number is 58474355.

For further information or questions, please do not hesitate to contact our Investor Relations Department at (301) 968-9300 or [email protected].

ABOUT AGNC

AGNC is a REIT that invests in agency pass-through securities and collateralized mortgage obligations for which the principal and interest payments are guaranteed by a U.S. Government agency or a U.S. Government-sponsored entity. The Company is externally managed and advised by American Capital Agency Management, LLC, an affiliate of American Capital, Ltd. ("American Capital").

ABOUT AMERICAN CAPITAL

American Capital is a publicly traded private equity firm and global asset manager. American Capital, both directly and through its asset management business, originates, underwrites and manages investments in middle market private equity, leveraged finance, real estate and structured products. Founded in 1986, American Capital has $23 billion in assets under management and eight offices in the U.S., Europe and Asia. American Capital and its affiliates will consider investment opportunities from $10 million to $300 million.

FORWARD-LOOKING STATEMENTS

This press release contains statements that constitute "forward-looking statements," including with regard to the closing of the Company's securities offering and the anticipated use of the net proceeds. These statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. No assurance can be given that the securities offering discussed above will be completed on the terms described, or at all, or that the net proceeds of the offering will be used as indicated. Completion of the securities offering on the terms described, and the application of net proceeds, are subject to numerous conditions, many of which are beyond the control of the Company, including, without limitation, changes in interest rates; changes in the yield curve; changes in prepayment rates; the availability and terms of financing; changes in the market value of our assets; general economic conditions; market conditions; conditions in the market for agency securities; legislative and regulatory changes that could adversely affect the business of the Company; and other factors, including those set forth in the Risk Factors section of the Company's periodic reports filed with the Securities and Exchange Commission ("SEC"). Copies are available on the SEC's website, www.sec.gov. The Company undertakes no obligation to update these statements for revisions or changes after the date of this release.

CONTACT:
Investors - (301) 968-9300

SOURCE: American Capital Agency Corp.