A.M. Best Affirms Ratings of Mitsui Sumitomo Insurance Company Limited.

OLDWICK, N.J. -- A.M. Best Co. has affirmed the financial strength rating of A+ (Superior) and the issuer credit rating of "aa" of Mitsui Sumitomo Insurance Company Limited (MSI) (Japan). The outlook for both ratings is stable.

The ratings reflect MSI's improved risk-adjusted capitalization, consistent operating performance and efficient distribution channels. The ratings also reflect the company's growing overseas and life business operations.

MSI has maintained a strong capital position over the past five years. The company's risk-adjusted capitalization, as measured by Best Capital Adequacy Ratio (BCAR), improved in fiscal year 2005. This was mainly attributed to the increase in unrealized capital gains, price fluctuation reserves and a rise in earned income. The local solvency ratio also showed a similar improvement trend, from 1,026% in fiscal year 2004 to 1,122.7% as of September 30, 2006. A.M. Best expects that MSI's capitalization will remain stable for the next three years.

MSI has achieved a stable operating performance over the past five years, except in fiscal year 2004 when it experienced an extraordinary level of natural disaster claims payments. In fiscal year 2005, MSI recorded an improvement in its loss ratio due to the decrease in catastrophic claims payments. The expense ratio has also improved, signifying the improvement in MSI's operating efficiency due to its size advantage. The adjusted return on equity (ROE) and return on assets (ROA) both remained stable, recorded at 3% and 0.9%, respectively, in fiscal year 2005.

MSI has formed strong business alliances and co-operation strategies with life insurance companies, credit card companies and banks. It is also a positive initiative for MSI to reconsolidate and build a strong sales force of 50,000 agents with high productivity and sales capacity by fiscal year 2007. A.M. Best believes that this reconsolidation scheme will help the company to stay competitive and strengthen its distribution channels.

MSI is aggressive in expanding its overseas operations, especially in the Asian markets. The company has one of the largest overseas networks among the Japanese non-life insurance companies. In fiscal year 2005, MSI's overseas premiums represented 13% of its total consolidated net premiums written (NPW), and it aims to increase the overseas portion to 20% by fiscal year 2010. The life operations handled by its two major subsidiaries, MS Kirameki Life (focusing on first sector products) and MS MetLife Insurance (focusing on personal annuity products), have also achieved a substantial business growth with increasing profits over the past three years.

Partially offsetting these positive rating factors are the adverse impact on MSI's market profile due to the Financial Services Agency's (FSA) business suspension order and high equity exposure.

MSI's market competition might be deteriorated due to the business suspension order issued by the FSA in June 2006 regarding its non-payment claims in relation to third sector products. The company will likely face a downward pressure in respect of its overall earnings in fiscal year 2006 due to the nonpayment claims problems, as well as the impact of damages resulting from Typhoon 13 that hit Japan in September 2006.

Despite its continuous effort to reduce its equity holdings, MSI's equity exposure remains high. This high equity exposure might exert pressure on the stability of the company's capitalization level.

Founded in 1899, A.M. Best Company is a full-service credit rating organization dedicated to serving the financial services industries, including the banking and insurance sectors. For more information, visit www.ambest.com.