Anworth Mortgage Asset Corporation Reports Earnings of $0.05 per Share for Second Quarter of 2007.

SANTA MONICA, Calif. -- For the quarter ended June 30, 2007 and based on a weighted average of 45.6 million fully diluted shares outstanding, Anworth Mortgage Asset Corporation (NYSE: ANH) announced today unaudited net income to common stockholders of $2.1 million, or $0.05 per share.

Anworth's investments consist of the following portfolios: Agency mortgage-backed securities ("Agency MBS"); Non-Agency mortgage-backed securities ("Non-Agency MBS"); residential real estate loans owned by Belvedere Trust Mortgage Corporation ("BT Residential Loans"); and other mortgage-backed securities owned by Belvedere Trust Mortgage Corporation ("BT Other MBS"). Belvedere Trust Mortgage Corporation, or Belvedere Trust, is a wholly-owned subsidiary of Anworth.

At June 30, 2007, the Agency MBS portfolio was approximately $4.9 billion and was allocated as follows: 25% Agency adjustable-rate mortgages; 56% Agency hybrid adjustable-rate mortgages; 18% Agency fixed-rate MBS; and less than 1% Agency floating-rate collateralized mortgage obligations, or CMOs.

At June 30, 2007, the Non-Agency MBS portfolio was approximately $112 million, consisting of floating-rate CMOs at a current yield of 5.58% that were acquired at par value.

At June 30, 2007, the current yield on the Anworth's Agency MBS portfolio was 5.65% based on a weighted average coupon of 5.73% divided by the average amortized cost of 101.3%. The quarter-end unamortized premium was $66 million, or 1.3% of the par value. During the quarter ended June 30, 2007, the expense of amortizing the Agency securities premium (based on prepayments and scheduled payments) was $6.3 million, compared to $5.9 million during the quarter ended March 31, 2007. During the quarter ended June 30, 2007, the constant prepayment rate (or "CPR") of the Agency MBS and Non-Agency MBS was 25.1% and the CPR of the adjustable-rate and hybrid adjustable-rate Agency MBS was 27.0%. For the Agency MBS and Non-Agency MBS adjustable-rate mortgage and hybrid assets, the weighted average term to the next interest rate reset date was 29 months.

At June 30, 2007, Belvedere Trust did not have any residential mortgage loans held for securitization and securitized mortgage loans were $1.36 billion. Belvedere Trust's securitized loan portfolio consists of high credit-quality adjustable-rate and hybrid first-lien mortgage loans. At June 30, 2007, the average FICO score of Belvedere Trust's BT Residential Loans portfolio was 728 and the average loan-to-value was 72%.

At June 30, 2007, Belvedere Trust's BT Other MBS portfolio consisted of $201 million backed by collateral that was 26% hybrid, 74% adjustable-rate and less than 1% fixed-rate mortgages. This amount includes approximately $7.6 million in securities that were retained from Belvedere Trust's first securitization (HYB1) (accounted for as a sale), consisting of $0.4 million in securities rated AAA, $5.7 million in other investment grade securities and $1.4 million in non-investment grade securities. The remaining balance of approximately $193 million was securities that were purchased from major issuers and consist of $42 million of securities rated from A+ to A-, $145 million of securities rated from BBB+ to BBB- and $6 million in non-investment grade securities. At June 30, 2007, the BT Other MBS portfolio that has been acquired from other issuers is backed by mortgage loans with an average FICO of 711 and an average LTV of 74%.

During the quarter ended June 30, 2007, the CPR of Belvedere Trust's BT Residential Loans portfolio was 39.8% and the CPR of Belvedere Trust's BT Other MBS portfolio was 2.3%. At June 30, 2007, the weighted gross and net coupons on Belvedere Trust's BT Residential Loans portfolio were 6.32% and 5.96%, respectively. The difference between the gross and net weighted average coupons is due primarily to servicing fees. The weighted average coupon on Belvedere Trust's BT Other MBS portfolio was 6.63%. The average cost of Belvedere Trust's BT Residential Loans portfolio was 101.55% and the average cost of Belvedere Trust's BT Other MBS portfolio was 97.83%.

Relative to Anworth's Agency MBS and Non-Agency MBS portfolios at June 30, 2007, the outstanding repurchase agreement balance was $4.5 billion with an average interest rate of 5.28% and an average maturity of 85 days. After adjusting for collateralized interest rate swap transactions, the average interest rate was 5.09% with an average maturity of 364 days.

During the quarter ended June 30, 2007 and relative to average Agency MBS earning assets, interest income earned was 5.64%, amortization of premium was (0.50)% and the average cost of funds was 5.12%, resulting in an interest rate spread of 0.02%.

The financing of Belvedere Trust's BT Residential Loans and BT Other MBS portfolios included mortgage-backed securities issued of $1.2 billion and repurchase agreements of $288 million. At June 30, 2007, the weighted average coupon on the mortgage-backed securities issued was 5.13% and the weighted average borrowing rate on Belvedere Trust's repurchase agreements was 5.12%.

During the quarter ended June 30, 2007, Anworth's average equity investment in Belvedere Trust was $100 million and Belvedere Trust generated a net profit of $0.3 million.

Stockholders' equity available to common stockholders at quarter end was approximately $423 million, or $9.27 per share. The $423 million equals total stockholders' equity of $472 million less the Series A Preferred Stock liquidating value of $46.88 million and less the difference between the Series B Preferred Stock liquidating value of $28.75 million and the proceeds from its sale of $26.86 million.

Average common stockholders' equity for the quarter ended June 30, 2007 was $434 million.

About Anworth Mortgage Asset Corporation

Anworth is a mortgage real estate investment trust (REIT) which invests in mortgage assets, including mortgage pass-through certificates, collateralized mortgage obligations, mortgage loans and other real estate securities. Anworth generates income for distribution to shareholders primarily based on the difference between the yield on its mortgage assets and the cost of its borrowings. Through its wholly-owned subsidiary, Belvedere Trust Mortgage Corporation, Anworth also invests in high quality jumbo adjustable-rate mortgages and finances these loans though securitizations.

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

This press release contains forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. These statements are based upon our current expectations and speak only as of the date hereof. 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 increases in the prepayment rates on the mortgage loans securing our mortgage-backed securities, our ability to use borrowings to finance our assets, increases in default rates of the mortgage loans acquired by our mortgage loan subsidiaries, risks associated with investing in mortgage-related assets, including changes in business conditions and the general economy, our ability to maintain our qualification as a real estate investment trust for federal income tax purposes, and management's ability to manage our growth. Our Annual Report on Form 10-K, recent and forthcoming Quarterly Reports on Form 10-Q, recent Current Reports on Form 8-K, and other SEC filings discuss some of the important 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.

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(1) The six months ended June 30, 2006 is as adjusted to properly record the Series A Cumulative Preferred Stock dividend based on declaration date as opposed to the quarter to which it relates.