Press Release

BETHESDA, Md., Sept 23, 2010 /PRNewswire via COMTEX/ -- American Capital Agency Corp. (Nasdaq: AGNC) ("AGNC" or the "Company") announced today that Gary Kain, Chief Investment Officer, is scheduled to make a presentation at the JMP Securities Financial Services and Real Estate Conference on Wednesday, September 29, 2010 in New York, NY. The AGNC presentation is scheduled to begin at 3:00 pm ET. The presentation will be webcast live and archived for 90 days on the AGNC website at http://ir.agnc.com/.

For further information or questions, please contact Investor Relations 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"). 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 $15 billion in capital resources under management and eight offices in the U.S., Europe and Asia. American Capital and its affiliates will consider investment opportunities from $5 million to $100 million. For further information, please refer to http://www.americancapital.com/.

CONTACT:
Investors - (301) 968-9300

SOURCE: American Capital Agency Corp.