American Capital Agency Will Report Q3 2011 Results on October 25; Shareholder Call Scheduled for October 26

October 11, 2011

BETHESDA, Md., Oct. 11, 2011 /PRNewswire via COMTEX/ -- American Capital Agency Corp. (Nasdaq: AGNC) ("AGNC" or the "Company") announced today it will report third quarter 2011 earnings after market close on October 25, 2011. AGNC invites shareholders, prospective shareholders and analysts to attend the AGNC shareholder call on October 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 16828279. 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 Q3 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 October 26. In addition, there will be a phone recording available from 4:00 pm ET October 26 until 11:59 pm ET November 9. If you are interested in hearing the recording of the presentation, please dial (855) 859-2056 (U.S. domestic) or (404) 537-3406 (international). The conference ID number is 16828279.

For further information or questions, please contact our Investor Relations Department at (301) 968-9300 or [email protected].

ABOUT AMERICAN CAPITAL AGENCY CORP.

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 AGNC Management, LLC, an affiliate of American Capital, Ltd. ("American Capital"). For further information, please refer to http://www.agnc.com/.

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 $52 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. For further information, please refer to http://www.americancapital.com/.

SOURCE: American Capital Agency Corp.