Exhibit 99.1

Anworth Announces Fourth Quarter 2011 Financial Results

SANTA MONICA, Calif.--(BUSINESS WIRE)--February 9, 2012--Anworth Mortgage Asset Corporation (NYSE: ANH) reported today core earnings available to common stockholders of $26.9 million, or $0.20 per diluted share, for the fourth quarter ended December 31, 2011, consisting primarily of $28.4 million of net income less $1.5 million of dividends paid to our preferred stockholders. This compares to core earnings of $29.1 million, or $0.22 per diluted share, for the third quarter ended September 30, 2011.

“Core earnings” represents a non-GAAP financial measure, which we define as GAAP net income excluding impairment losses on mortgage-backed securities, or MBS. For the three months ended December 31, 2011, there were no impairment losses on MBS.

On December 15, 2011, we declared a quarterly common stock dividend of $0.21 per share, which was payable on January 27, 2012 to our holders of common stock as of the close of business on December 30, 2011.

On a non-GAAP basis and during the three months ended December 31, 2011, our estimated taxable income, on which we base our common stock dividends, was $29 million, or $0.21 per diluted share. The difference between net income and our estimate of taxable income earned during the three months ended December 31, 2011 reflects the non-deductibility for income tax purposes of executive compensation of approximately $1.6 million, or $0.01 per share. A reconciliation of taxable earnings to net income available to common stockholders appears at the end of this news release.

At December 31, 2011 and September 30, 2011, our book value per share was $6.96 and $6.93, respectively.

Our investments consist of Agency MBS, which constituted essentially all of our portfolio at December 31, 2011. At December 31, 2011 and September 30, 2011, the fair value of our Agency MBS portfolio and its allocation was approximately as follows:

At December 31, 2011, our swap agreements had the following notional amounts (in thousands), weighted average interest rates and remaining terms (in months):

At December 31, 2011, our leverage multiple was 7.25x, which was an increase from our leverage multiple of 7.18x at September 30, 2011. The leverage multiple is based on common stockholders’ equity plus all Preferred Stock and the junior subordinated notes.

At December 31, 2011, stockholders’ equity available to common stockholders was approximately $933.8 million, or a book value of $6.96 per share, based on approximately 134.1 million shares of common stock outstanding at quarter end. The $933.8 million equals total stockholders’ equity of $982.3 million less the Series A Preferred Stock liquidating value of $46.9 million and less the difference between the Series B Preferred Stock liquidating value of $28.8 million and the proceeds from its sale of $27.2 million. At September 30, 2011, stockholders’ equity available to common stockholders was approximately $921.7 million, or a book value of $6.93 per share, based on approximately 133 million shares of common stock outstanding at quarter end. The $921.7 million equals total stockholders’ equity of $970.2 million less the Series A Preferred Stock liquidating value of $46.9 million and less the difference between the Series B Preferred Stock liquidating value of $29.8 million and the proceeds from its sale of $28.2 million.

The Company will host a conference call on February 10, 2012 at 1:00 PM Eastern Time, 10:00 AM Pacific Time, to discuss fourth quarter 2011 results. The dial-in number for the conference call is 877-317-6789 for U.S. callers (international callers should dial 412-317-6789 and Canadian callers should dial 866-605-3852). When dialing in, participants should ask to be connected to the Anworth Mortgage earnings call. Replays of the call will be available for a 7-day period commencing at 7:00 PM Eastern Time on February 10, 2012. The dial-in number for the replay is 877-344-7529 for U.S. callers (international and Canadian callers should dial 412-317-0088) and the conference number is 10009942. The conference call will also be webcast over the Internet, which can be accessed on Anworth’s web site at http://www.anworth.com through the corresponding link located on the home page.

Investors interested in participating in Anworth’s Dividend Reinvestment and Stock Purchase Plan, or the Plan, or receiving a copy of the Plan’s prospectus may do so by contacting the Plan Administrator, American Stock Transfer & Trust Company, at 877-248-6410. For more information about the Plan, interested investors may also visit the Plan Administrator’s website at http://www.investpower.com or the Company’s website at http://www.anworth.com.

About Anworth Mortgage Asset Corporation

Effective December 31, 2011, Anworth became an externally-managed mortgage real estate investment trust, which invests primarily in securities guaranteed by the U.S. Government, such as Ginnie Mae, or guaranteed by federally sponsored enterprises, such as Fannie Mae or Freddie Mac. Anworth seeks to generate income for distribution to shareholders primarily based on the difference between the yield on its mortgage assets and the cost of its borrowings. The Company is managed by Anworth Management, LLC, or the Manager, pursuant a management agreement. The Manager is subject to the supervision and direction of the Company’s Board of Directors, and is responsible for (i) the selection, purchase and sale of the Company’s investment portfolio; (ii) the Company’s financing and hedging activities; and (iii) providing the Company with management services and other services and activities relating to the Company’s assets and operations as may be appropriate. The Company’s common stock is traded on the New York Stock Exchange under the symbol “ANH.”

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995

This news release may contain forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are based upon our current expectations and speak only as of the date hereof. Forward-looking statements, which are based on various assumptions (some of which are beyond our control) may be identified by reference to a future period or periods or by the use of forward-looking terminology, such as "may," "will," "believe," "expect," "anticipate," "continue," or similar terms or variations on those terms or the negative of those terms. Our actual results may differ materially and adversely from those expressed in any forward-looking statements as a result of various factors and uncertainties, including but not limited to, changes in interest rates, changes in the yield curve, the availability of mortgage-backed securities for purchase, increases in the prepayment rates on the mortgage loans securing our mortgage-backed securities, our ability to use borrowings to finance our assets and, if available, the terms of any financing, changes in the market value of our assets, risks associated with investing in mortgage-related assets, changes in business conditions and the general economy, including the consequences of actions by the U.S. government and other foreign governments to address the global financial crisis, changes in government regulations affecting our business, our ability to maintain our qualification as a real estate investment trust for federal income tax purposes, our ability to maintain an exemption from the Investment Company Act of 1940, as amended, and the Manager’s ability to manage our growth. Our Annual Report on Form 10-K and other SEC filings discuss the most significant risk factors that may affect our business, results of operations and financial condition. We undertake no obligation to revise or update publicly any forward-looking statements for any reason.

Reconciliation of Non-GAAP Financial Measures

The table below presents the reconciliation of net income to common stockholders to estimated taxable income, which non-GAAP financial measure excludes the non-deductibility of components of discretionary and incentive executive compensation. The Company’s management believes that this financial measure, when considered together with our GAAP financial measures, provides information that is useful to investors in understanding the differences between GAAP earnings and estimated taxable earnings (which is the basis upon which our Board of Directors declares our common stock dividends). Management also believes that this financial measure enhances the ability of investors to analyze the Company’s operating trends and to better understand its operating performance. This financial measure should not be used as a substitute in assessing the Company’s results of operations and financial condition at December 31, 2011. An analysis of any non-GAAP financial measure should be used in conjunction with results presented in accordance with GAAP.

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(1) During the three months ended December 31, 2011, diluted earnings per common share include the assumed conversion of 1.152 million shares of Series B Preferred Stock at the conversion rate of 3.6075 shares of common stock and the adding back of the Series B Preferred Stock dividend.

CONTACT:
Anworth Mortgage Asset Corporation
John T. Hillman
310-255-4438 or 310-255-4493
Email: jhillman@anworth.com
Web site: http://www.anworth.com