American Capital Agency Corp. Declares Third Quart

American Capital Agency Corp. Declares Third Quarter Dividend of $0.80 Per Share and Announces the Repurchase of 11.9 Million Shares

Bethesda, MD -  September 19, 2013 - American Capital Agency Corp. (Nasdaq: AGNC) ("AGNC" or the "Company")announced today that its Board of Directors has declared a cash dividend of $0.80 per share for the third quarter 2013. The dividend is payable on  October 28, 2013 to common shareholders of record as of  September 30, 2013 , with an ex-dividend date of  September 26, 2013 .

The Company also announced today that in the third quarter of 2013, it made open market purchases of approximately 11.9 million shares of American Capital Agency common stock, or 3% of the Company's outstanding shares as of June 30, 2013. The shares were purchased at an average price of $22.16 per share, including expenses, totaling approximately $263 million. Since commencing a buyback program in the fourth quarter of 2012, the Company has purchased approximately 14.8 million shares of American Capital Agency common stock for total consideration of approximately $347 million, including expenses.

For further information or questions, please contact our Investor Relations Department at  (301) 968-9220 or  IR@AGNC.com .

ABOUT AMERICAN CAPITAL AGENCY CORP.
American Capital Agency Corp. is a real estate investment trust 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  www.AGNC.com .

ABOUT AMERICAN CAPITAL
American Capital, Ltd. (Nasdaq: ACAS) 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, energy & infrastructure and structured products. American Capital manages $21 billion of assets, including assets on its balance sheet and fee earning assets under management by affiliated managers, with $119 billion of total assets under management (including levered assets). Through an affiliate, American Capital manages publicly traded American Capital Agency Corp. (Nasdaq: AGNC) with approximately $10 billion of net book value and American Capital Mortgage Investment Corp. (Nasdaq: MTGE) with approximately $1 billion of net book value. From its eight offices in the U.S. and Europe, American Capital and its affiliate, European Capital, will consider investment opportunities from $10 million to $750 million. For further information, please refer to  www.AmericanCapital.com .