Japan Post Insurance Co., Ltd. topped A.M. Best's Review list of the world's 25 largest insurance companies by non-banking assets and France's AXA S.A. was ranked the first by net premiums written in 2010. The rankings of the world's largest global insurance companies were released by A.M. Best in January 2nd, 2012 issue of Best Week. Japan Post Insurance Co., Ltd had US$ 1.089 trillion in non-banking assets in 2010 and despite retreating by 5.26% from 2009, it topped the list. France's AXA S.A. came in the second rank as it had US$ 920.4 billion in non-banking assets, with an increase of 3.27% from 2009. France's AXA S.A. had US$ 107.9 billion in net premiums written in 2010, with a surge of 0.2% from 2009. Italy's Assicurazioni Generali S.p.A. had 87.166 billion in net premiums written with an increase of 2.87% from 2009. The World's 25 largest insurers by non-banking assets: 1) Japan Post Insurance Co., Ltd. 2) AXA S.A. 3) Allianz SE 4) MetLife Inc 5) American International Group, Inc 6) AVIVA plc 7) Assicurazioni Generali S.p.A. 8) Prudential Financial Inc 9) Nippon Life Insurance Company 10) Legal & General Group plc 11) National Mut Ins Fed Agricultural Coop 12) AEGON N.V. 13) ING Group N.V. 14) CNP Assurances 15) Manulife Financial Corporation 16) Prudential plc 17) Zurich Financial Services Ltd 18) Berkshire Hathaway Inc 19) Dai-ichi Life Insurance Co Ltd 20) Hartford Financial Services Group Inc 21) Munich Reinsurance Company 22 PREDICA-Prevoyance Dialogue du Credit 23 Meiji Yasuda Life Insurance Company 24 China Life Insurance (Group) Company 25 Life Insurance Corporation of India The World's 25 largest insurers by net premiums written: 1) AXA S.A. 2) Assicurazioni Generali S.p.A. 3) UnitedHealth Group Inc ** 4) Allianz SE 5) Japan Post Insurance Co., Ltd. 6) National Mut Ins Fed Agricultural Coop 7) Munich Reinsurance Company 8) WellPoint Inc. 9) AVIVA plc 10) China Life Insurance (Group) Company 11) Nippon Life Insurance Company 12) State Farm Group *** 13) American International Group, Inc 14) Kaiser Foundation Group of Health Plans **** 15) Zurich Financial Services Ltd 16) CNP Assurances 17) Life Insurance Corporation of India 18) Dai-ichi Life Insurance Co Ltd 19) Prudential plc 20) Meiji Yasuda Life Insurance Company 21) ING Group N.V. 22) Sumitomo Life Insurance Company 23) Humana Inc. ** 24) Berkshire Hathaway Inc 25) Tokio Marine Holdings, Inc.